Ford 8n Runs Good Until Warmed Up

Usually waiting about 20 minutes or so would allow a proper start. Hello I have a 2001 Ford Escape XLT V6 and for the second Fall / winter season I am experiencing the same problem. 4-liter is available in the Ford F150, F250 and F350 pickups, as well as the Expedition sports utility vehicle. Re: 8N hard starting when warm You might also look at the coil. when cold everything is good when it warms up and comes to a red light ot stop sign ldles rough and smell of fuel comes from truck when shut off. 0 V6 OHV equipped Ranger for 10 years now and am very surprised at how little info there is on the net for this engine/vehicle combination. If the problem were the spark plug, the misfire would move to #2. It has new spark plug, fuel filter, air filter, and fuel. Re: Won't restart after running until cools down? Tony, In your pic of the engine and fuel injector pump the throttle lever is the one with the linkage rod connected to it and runs back towards the dash (which ultyimately connects to your thottle lever on the dash). Warm the engine up until you get good hot. New parts are not guarenteed to be good parts. If your Powerstroke 6. Runs fine until it warms up then it seems to be running on only one cylinder. My '48n 8N has had lift issues for a few years and I finally decided to tackle. Most cars built in the last 20 years don't need to be warmed up first. I replaced the IPC sensor when I purchased the truck(it was definitely bad). Rookie RB Ty Johnson led the Lions with 22 yards rushing on three carries. With those memories fresh on my mind, waking up earlier didn't seem like too much of a price to pay. We cleaned them up and swapped the plug on Hole #4 with #2. It cuts very good and the deck is adjustable from 1 to 5 inches. Find your perfect deal with our award winning car search. My 1996 Super Duty 7. 10th Planet is a two-fold operation run by Pat Fitzgerald and Robin Dale Ford that includes their own independent record label, 10th Planet Records, and recording studio, 10th Planet Recording, recording great Alaskan music in the Interior. If any of these is lacking, the engine may stall. Problem: the tractor stops after running fine for about an hour. Check your fuel pressure. Engine stalls when warm Rough idle, stalls, when engine warm. Heater has been going out, no blower now but can feel some heat at vents. in reply to. Read more Ford reviews to learn about other models. She is published by Dreamspinner Press and DSP Publications. My 8n started sputtering when I rev it up. While the engine is one of the best Ford has ever engineered, based on warranty repair numbers, it does require care and proper maintenance, like all engines. Is this normal, and can I do anything to improve this. This tractor is a 1950 model and has a gasoline powered, 2. Weather Underground provides local & long-range weather forecasts, weather reports, maps & tropical weather conditions for locations worldwide. To start running, put on simple, comfortable clothes and tennis shoes, and do 5-10 minutes of warm up stretches, including lunges and squats. So I put up this site to let others know what I've learned. well back in october i pulled my o/t 78 f150 out of the field it sat in for a few years blah blah blah well i went through the truck with a fine tooth comb,and it runs really good! but now when i fire it up, it holds 40 psi oil pressure @ idle when cold, but as it warms up, the oil presure slowly falls to about 15psi @ idle when i put it to 2 grand it slowly comes up to about 30 psi and. To learn more, see. good luck with the 8n, they usually run very well so when you find the problem it will make you happy with it. 8n engine misses and shuts down when it warms up Ford 9N, 2N, 8N. When I adjust the air mixture screws on the carb using a tach/dwell meter. Then it will start surging under load and missing like crazy. Exactly Why You Need To Warm Up Your Car When It's Cold where it will cling to the walls and do nobody any good. After a prolonged absence, I again return for advice from the FORD guys. If you have problems with your hydraulic lift on your N-Series tractor not performing the way it should, here is a method of first determining the problem, then working to resolve it. She is published by Dreamspinner Press and DSP Publications. There are no troble lights on. I took apart the. Seems that they keep your RPM's HIGHER until it is warmed up. But today you're up for a good challenge […]. Antique Ford Tractor: Ford 671 Select-O-Speed [Return to the Shed] This model of the 601 series tractors had a Select-O-Speed power-shift transmission which provided ten forward speeds and two reverse speeds. My wife's cousin has a Ford 8N tractor and its owner's manual calls for use of 30 weight engine oil in the summer. FORD 8N TRACTOR CARB ADJUSTMENTS. I would have a technician inspect your rough idle. 9 that i have done alot of work too. However when it warms up it runs muich better. Usually, when first started, it is a good idea to watch the gauges and monitor the temp. George Ford and Owen Farrell will be reunited in the starting line-up for England’s third Rugby World Cup warm-up clash with Ireland this Saturday after being selected at fly-half and inside. All N-Series Tractors—Ford-Ferguson 9N, 2N, and Ford 8N. Put a bit of pipe thread sealing paste on the sender threads to help it seal, but not so much that the sender can't get a good ground. My truck is a 1986 Ford F150 2WD LWB EFI302cid. There's something beautiful about a perfectly restored Ford 8N tractor - but there's a big soft spot in my heart for a V8 conversion job! It's one of my favorite custom projects that we've done in the shop. the car runs like a dream except for the heater. The transmission from Ford is ready to bolt up…. Simple to convert mid-ride with its zip-off sleeves, the vest keeps your core warm when the weather turns mild. 0 engine with about 100,000 miles. Preliminary results are presented here. 0 liter (119. Once engine warms up, steers like it came out of showroom. After a prolonged absence, I again return for advice from the FORD guys. Big Dog Jim Foxx changed everything until it finally quit running. We cleaned them up and swapped the plug on Hole #4 with #2. At a time when gasoline wasn’t always easy to find (especially in rural areas), Ford designed the Model T to have multi-fuel flexibility, giving it the capability of running on gasoline, kerosene or ethanol. Dirty or plugged air filter. 0L Power Stroke replaced the tried and true 7. Is this normal, and can I do anything to improve this. The tractor is 12V (I don't know yet how well the conversion was done) and has a front mount distributor. The 1997 Nissan Altima has 1 problems reported for runs rough until warmed up. I mix 2 onces of fuel stabilizer in with every 5 gallons of gas this helpskeep varnish from starting in the fuel system that the new gas causes. It has only 1 minor issue. Car runs fine when cold, but if left idle, once warm, idles extremely rough, and dies out when attempting to drive after warm up. Idling a cold engine and waiting to warm-up before departing reduces the engine life. It will start, run about 2 seconds, then dies. by Tim Daley. It will idle smooth for a few seconds then start to jump. Rotate the crankshaft to line the mark on the pulley up at about 7 degrees BTDC. After a short run and bike warm up and with 30 minutes until race-time, I downed a Gu energy gel and swigged some water before making my way over to the swim start. She is published by Dreamspinner Press and DSP Publications. Crystal Boy, 10, Goes Missing After Running Away From HomeAccording to police, Xzaybeon is the boy's name, and he ran away from his home on the 5100 block of Edgewood at 8 p. 5 One Take: 2020 Porsche 911 Carrera S. Mods are Walbro fuel pump, KDM hardpipe kit with cooler, 16g turbo. When its cold it shifts hard as hell, and it's taking longer every day to get to the point that it starts running good. Gently increase the amount of time you run for until you can run for maybe 30 minutes. If it is stopped and cools down for about 30 min it will almost burn rubber when compared to when it is hot. It doesn't need to idle for 10 minutes!. Many Ford type solenoids get their ground through the bolts which hold them to the vehicle body, so when replacing a solenoid, make sure the bolts are clean and tight, and making a good ground. 3s come in last month that would run rough at random times. My wife's cousin has a Ford 8N tractor and its owner's manual calls for use of 30 weight engine oil in the summer. Another thing that effects a warm engine running rough is a coil going bad. 5V(thats a good charge). Car stalls after engine warms up - HELP!!!! the problem I am having is the car runs fine from a cold start and as the car warms the choke opens as it is supposed. Drive it from cold, but keep the revs below 3000RPM until the temp gauge moves towards the middle. People sometimes worry too much about a little smoke from an engine. mow or drive. 9n Ford tractor - $1000 (Brookland) 9n ford tractor 1953 run good but has been setting for a about 7 or 8 years, but I’ve been working on it rebuilt the carb new battery got it running and runs good but, it doesn’t want to start after you shut it off. That being said, it is never good to just start and go immediately. The truck ran perfect for the 8 mile drive up a long uphill mountain road that goes from 6500 feet in elevation up to 8000. My 1996 Super Duty 7. That coolant issue is the biggest one. So the second approach may appear obvious. Then even under light acceleration the engine runs very rough, shudders and lacks power. A repair which has cropped up lately in the last couple months on the 5. I have a 2000 Expedition, 5. I just find it to be a strange coiendence, that it ran great until I changed the oil. 0 L Fox Mustangs of nearly 30 years later. i dont think i have any vacuum leaks but will check. Firstly, if your car has an installed universal scanner jack, fasten the code scanner and collect the information from the damaged components of the system. I've been having this problem ever since I bought the truck in March and now it seems like its getting worse. Low car AC charge causes evaporator freeze up and low airflow. The EcoBoost 1. Both motors use a High Pressure Oil Pump to build up oil pressure to fire the injectors. once i drive for 5 min and car warms a little, no more problems. Re: Won't restart after running until cools down? Tony, In your pic of the engine and fuel injector pump the throttle lever is the one with the linkage rod connected to it and runs back towards the dash (which ultyimately connects to your thottle lever on the dash). So keep an eye on coolant level. Published Dec 7th, 2015. The truck runs great when it is warming up, but when the truck is warm it starts to run like crap. The pump runs completely reliably once stable after startup. 8L vehicle is not running on all 6 cylinders. Re: Ford 8N runs and dies This new gas the government says we have to use isn't worth a crap. 0 engine with about 100,000 miles. Why does my 1999 Ford Expedition idle rough and stall when engine warms up. Will not re-start, seems to be flooding at this point. I have gone through like 3 sets of plugs in the last few of months trying to solve this. cold, runs good warmor very hard/no starts when coldand usually plugging the block heater in (overnight) can warm the oil up enough to minimize these types of symptoms once the oil warms up (block heater or 10-15min of driving) can thin the oil out enough for a larger volume of oil to get through the (worn) poppet valves. To learn more, see. calibrations may vary due to regional fuels and state of engine tune and performance. After it warms up it gets better, but still enough to slightly shake the truck back and forth when your sitting in it. start set up by confirming carb base line settings. i am lucky to get 13mpg lately. Battery remained disconnected for extended period. I turn the screw in until the rpms starts to drop off and then I slowly open the idle/mixture screw up until idle smooths out which is about two turns. To idle your vehicle, all you need to do is let it run while stationary. When car starts cold the engine runs rough until it warms up and you shut the engine down and restart it. I don't like it when folks say they took a hone to the bore - the fit is rather demanding and. Ford Focus Club ; How Does Start/stop Work? go for a run but turn off the aircon/heater. If you don't, the engine heats unevenly, which means it wears unevenly. three point and pto work good ,has good tires, does not have power steering but steers very easy. com (or Ford 4L or Ford 4. the check engine light came on to it auto zone they said it was giving a code P0460. The 1997 Nissan Altima has 1 problems reported for runs rough until warmed up. I previously had trouble with an autolite carb, I have finally fixed that with the addition of a holley 2bbl on the FE. Another thing that effects a warm engine running rough is a coil going bad. I'll start the car up and it runs just fine, no problems. After 3 pulls it ran like it was trying to die, then ran great and after about five minutes, died. It runs fine for a while, but once it really warms up, it dies down to barely a chug and is likely to die. You don't want that to happen in this case. Any help would greatfully be appreciated. 2015 Ford Mustang GT Long-Term Road Test And then it makes good on its threat. it is a newer car 1998. any sugges. The 1997 Nissan Altima has 1 problems reported for runs rough until warmed up. 2003 ford f250 5. start set up by confirming carb base line settings. not a hesitation or sputter or burp the entire trip. Elko Cars,Trucks and More,Classifieds! minutes to warm up. For normal bearing pressure indications take a look at LUBE-03. 3 IDI Motors), 7. 1993 Ford F150 runs good cold but when warmed up it started overheating and bogging down. Let’s include engine warm up in the polar vortex: peep this Oil Viscosity Chart to ensure your oil didn’t turn into molasses overnight. Turn Gas Valve under dash on passenger side to closed position (pointing to the Left). Once it warms up nice n hot everything expands including. It won't restart except very reluctantly with the choke on. Mine is a push button O. Any ideas? Is there a coil that could be heating up?. 0 liter (119. Rough Idle When Cold - Goes Away after warm up OEM Issues Rough Idle When Cold - Goes Away after warm up - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum Home. in 1977, we perceived it as a. She is published by Dreamspinner Press and DSP Publications. I have a 2005 Land Rover Freelander with a 2. Change the gas filter spark plugs and air filter. SMOKING ENGINE Implications - BE-104A. 0 liter going strong! Be sure & check out Part I as well!. We took it in again yesterday the parts store said it was the fuel filter. “It felt good this morning and I have to try to carry that confidence and translate it through to the rally, that’s the important part. If you think I am making any of this up, I am not. Smoke is not good, but most times a little smoke is not detrimental to operation of the engine and not immediately terminal in nature. Letting it sit and idle only makes it worse, as the chamber temp does not rise much. I just find it to be a strange coiendence, that it ran great until I changed the oil. You can drive after that but take it easy until the engine/transmission is actually warm. My car runs good when it's cold but stalls once it warms up? What gives? Well, there is an ignition problem that can cause this when the engine gets hot and it stalls. Below is a picture of my Actron Pocket Scanner checking for engine misfire or other diagnostic trouble codes in the PCM on my vehicle. Warm Engine Won't Start. The warm-up cycle consists of a cold start followed by a. Bad glow plugs (burned out, coated with carbon, or not. my iac @ idle when at running temp is @ 9 @ 800 rpm. Ford 9N, 2N & 8N Discussion Forum a load on engine unless you let engine cool down then runs fine until warm up. Every one was in good shape, short of the lean read on #4. I let it run for a few minutes to warm it up and to charge the battery. Blowing water when cranked Ford 9N 2N 8N Ford 9N 2N 8N Just replaced head and gasket on 8N. I do let the pump prime up before starting. in 1977, we perceived it as a. 2003 ford f250 5. com (or Ford 4L or Ford 4. "They've outscored the opposition 111-23 since the bye. Once the engine is running again, replace parts one at a time, so if a new part is bad, we know what we just messed with and can put it back the way it was. If it has not cooled down it will spit and sputter after you put it in gear and try and move tractor. When the air is really cold, it hardly heats enough to burn the fuel that is injected. These codes are not always present with a failed, low voltage, FICM. The first time you go out, try running for 10 minutes. A Power Probe not only checks for current, it can supply power and ground so an electric motor can be checked easily on or off the car. All N-Series Tractors—Ford-Ferguson 9N, 2N, and Ford 8N. 0 Diesel It runs rough and has loss of power. I knew someone who would start his car and immediately floor it out of the parking lothis car lasted a few months and. Heater has been going out, no blower now but can feel some heat at vents. Avoid labouring the engine by changing up too early or using too high a gear. 88 F-350 with EFI 460 Starting/Running Problems - posted in 80-96 Ford Truck Tech Support: I have a 1988 Ford F-350 with an EFI 460 engine. After a prolonged absence, I again return for advice from the FORD guys. The car warms up and you get sort of warm air but if you put the fan higher it starts blowing colder all this time it stays in the middle between hot and cold. Solved the problem; the issue was the ****ing Viton tip on the needle valve which kept sticking in the seat and there's no provision for one of those little clips to connect. 4-liter is prone to three different types of abnormal engine noise. Bad glow plugs (burned out, coated with carbon, or not. Preliminary results are presented here. 0 Excursion No Crank After PCM Reprogram:. Its sleek lines give it a sportier look, while its precise steering helps to. He has been using 30w HD oil in it for years. - I replaced the thermostat, fan clutch, and flushed the radiator. 0 still runs bad until warm check out good then go to Walmart get some Rotella T6 it is a 5w40. Keeping it under 2500rpm is a good way to do this. when cold everything is good when it warms up and comes to a red light ot stop sign ldles rough and smell of fuel comes from truck when shut off. The durango has had regular oil changes and maintenance. I own a 1999 Dodge Durango, V8 Mag. I've been having this problem ever since I bought the truck in March and now it seems like its getting worse. then it chugs on 3 to 2. The truck ran perfect for the 8 mile drive up a long uphill mountain road that goes from 6500 feet in elevation up to 8000. Stumped on an engine "miss"!!! 390 FE Ford. Hi guys! I don't have a lot of car knowledge; but I've noticed in the cold my car is taking a really long time to get to regular temp, and my heat takes a good five-ten minutes to get warm. Even today, there remains a thriving business in flathead Ford hop-up parts, but Ford’s subsequent OHV V8s never developed the same loyal following. Sometimes it's hell to restart until cool again. However when it warms up it runs muich better. If your Powerstroke 6. This is true for both diesel and petrol engines. When the eng is restarted the tach does not move until you rev the eng up to abt 2,000. If it's that good for the interior, it may need to be changed. but also doesnt like when gas is to the floor dont know rpm because no gauge 1993 ford f150 302 141800 4x4. it will still work good for a long time 713 294 274nine. If you're getting no spark, this is a good thing to check. ford 1210 smokes Tractor Engine Repair Rebuild Tractor Engine Repair Rebuild I Have a 1983 1210 ford with 700 hrs on it. My car runs good when it's cold but stalls once it warms up? What gives? Well, there is an ignition problem that can cause this when the engine gets hot and it stalls. Hello I have a 2001 Ford Escape XLT V6 and for the second Fall / winter season I am experiencing the same problem. Both motors use a High Pressure Oil Pump to build up oil pressure to fire the injectors. The ECU or the coil gets hot and expands. So keep an eye on coolant level. 0 engine with about 100,000 miles. SMOKING ENGINE Implications - BE-104A. Both companies have guides for how to determine what amperage you should consider when upgrading to a one-wire alternator, and they'll be the first to tell you that if you're just running the most basic of electronics in your car, you. warm up the car by idling before driving, Argonne set out to measure start-up emissions, idling emissions, and the time for the catalyst to warm up and cool down vs. Most times, code numbers can pinpoint the exact system failure or miss in the engine. Look for any trouble codes that appear while the engine runs at idle. If the car idles rough this can also be indicative of bad plug wires, distributor, or rotor. If the truck runs rough when it's cold but clears up when the engine is warm, you have a stiction issue in your injectors. Learn more about Ford Taurus at the Edmunds. Firstly, if your car has an installed universal scanner jack, fasten the code scanner and collect the information from the damaged components of the system. 276 II is a Ford design, early ones are red, same as previous Versatile 276, later blue ones use the turbo 4 Ford engine and all parts come from NH , weak areas are the axles, they can be bent or broken from overloading on all these tractors, as well, limited slip axles can and do wear out requiring axle work, basically it is a DANA 70 diff pot. My car runs good when it's cold but stalls once it warms up? What gives? Well, there is an ignition problem that can cause this when the engine gets hot and it stalls. Mods are Walbro fuel pump, KDM hardpipe kit with cooler, 16g turbo. Avoid labouring the engine by changing up too early or using too high a gear. Oil is very important for the 7. This is a terrible habit because your engine struggles to warm up in sub freezing temperatures, and until it does, it may take up to 15 minutes and all the while it is experiencing extreme wear and tear. After about 10 minutes when the engine is warmed up and I come to a complete stop the idle tends to fluctuate. but also doesnt like when gas is to the floor dont know rpm because no gauge 1993 ford f150 302 141800 4x4. My 8n started sputtering when I rev it up. just got back from an 1,800 mile road trip and our motorhome with the Ford 460 engine worked great. I've been having this problem ever since I bought the truck in March and now it seems like its getting worse. If the engine was running recently, it will run again without replacing any parts. Longest-Lasting Trucks After 200,000 Miles. outside temperature. I have only used it with a 501 sickle mower on it with no problems. You didnt say waht year the truck is, but the 7. with a good engine how. net, the internet's premier Ford truck community! You are currently viewing our boards as a guest which gives you limited access to view discussions and access other forum features. It needed to be purchased and then Ford had to program it. the date code is 5hd. It is bone stock. The 1997 Nissan Altima has 1 problems reported for runs rough until warmed up. It does not take much pressure to raise it that high. 0 is allowed to fully cool in temperatures between 30-60 degrees, it may exhibit increased turbo lag for the first 3-5 accelerations or until the engine warms up. 0L TD4 engine. Broadcast Message 0600. I can start up my 87 Bronco 2 XLT, with a 2. One thing that gave me much trouble when the engine got warm was a bad condenser that is in the distributor if you have a battery ignition. Runs fine not accelerate until it warms up real good? running badly until it really warms up on a 1987 Ford Econ. From grammar and spelling to style and tone, Grammarly helps you eliminate errors and find the perfect words to express yourself. I also touched up the deck with a little bit of red spray paint Asking 120 but will take 100 - letgo. I pulled out my Grandpa's 1941 H, which Ernie owns, and hooked it to the augur PTO shaft. Find a good Ford mechanic. If any of these is lacking, the engine may stall. The absence of traditional lead-up endurance event the Sandown 500 will ensure plenty of accidents in Sunday's Bathurst 1000, Supercars star Cam Waters has warned. A condition of running rough can be one of many factors. I'll start the car up and it runs just fine, no problems. Now, when I crank the tractor I have water blowing out of the radiator cap. ) I've been driving a 4. Unfortunately you usually can’t tell if that is the case until you have the transmission removed and opened up and at that point you might as well rebuild it. Where would you start? Runs rough when cold/great when warm - no codes KOEO When it warms up, the car runs great. Here’s a quick walk-through of conversion kits and the basic steps you’d need to take to muscle up your own Ford 8N tractor. It was developed as a versatile all-purpose tractor for the small farm and was exceedingly popular. Ford Ranger idles roughly, stalls out during hot weather tested good, but it was not acting up at the time it was tested. Try cycling the key a few times before you start it. Then all the sudden it starts to run good again. All the usual recommendations have been replaced: coil, points, condenser, plugs, rotor, etc. Unless you have a pusher fan, blowing out the radiator from the engine side is always a good idea. It would suddenly go away after a few minutes like someone threw a switch, a timed thing, not related to temperature, speed or anything else I could figure out. 4-liter is available in the Ford F150, F250 and F350 pickups, as well as the Expedition sports utility vehicle. Make sure the PCM and FICM are flashed to the latest calibration. Get started. try putting. Every engine needs three things to run and idle smoothly without stalling: a correct air/fuel ratio, sufficient idle speed for the idle load, and a good spark. Seems a little strange that the problem only occurs when the engine is warm. 2 distributor on right side 3 new coil/fuel lines and filters. 0 Diesel It runs rough and has loss of power. 1993 Ford F150 runs good cold but when warmed up it started overheating and bogging down. Hi guys! I don't have a lot of car knowledge; but I've noticed in the cold my car is taking a really long time to get to regular temp, and my heat takes a good five-ten minutes to get warm. Warm it up for about 30 seconds to a minute with no driving. This tractor is a 1950 model and has a gasoline powered, 2. i have a 2004 f150 with a 4. tractor works and runs good. with a good engine how. " The first few minutes of your drive are your warm-up time, so be gentle. Re: Transmission issues when it warms up? Big problem on early 5R55E trannies was the gasket between the valve body and the tranny case had a thin wall; it broke and let tranny fluid spew out. ), 4 cylinder engine that makes about 25 hp. Once again, the symptoms of stiction are hard cold starts, rough idling and excessive smoke out the tailpipe until the engine oil warms up. The ice builds up until it blocks airflow. 88 Ford Ranger runs rough at idle problem whith a ford ranger 4x4 1990 after warmed up off when warms up 2. My truck is a 1986 Ford F150 2WD LWB EFI302cid. Big Dog Jim Foxx changed everything until it finally quit running. Other things to check are, is the fuel boiling in the carb or is the gas line near hot exhaust etc?Or to look at it as a possible rich condition,is the choke. The purpose of this article is to highlight some of these common problems and how to fix them, so your mighty "Five-Oh" runs just as good, if not better than it did during the Reagan/Bush Sr. Note - Whenever you see a "7" as the second digit in the Ford "Hundred Series" tractors, it indicates that it has a Select-O-Speed. A common complaint, especially when temperature start to drop is, “My car runs poorly cold, or my car is hard to start cold”. It has 3 codes---303,304,305. 2020 Ford Mustang Shelby GT500 is a 760-HP thrill ride Wonderful Weekend before a Warm-Up Corey Simma - Local | WJAX We look to remain dry in Northeast Florida until Wednesday when the. Once it warms up nice n hot everything expands including. I previously had trouble with an autolite carb, I have finally fixed that with the addition of a holley 2bbl on the FE. I'll start the car up and it runs just fine, no problems. One way to check for bad plug wires is to inspect the plug wire runs with the car running in a very dark area. We ended up buying a rotor + cap together from Napa, and they worked well. Here's the Real Reason You Should Never Warm Up Your Car. Get corrections from Grammarly while you write on Gmail, Twitter, LinkedIn, and all your other favorite sites. net, the internet's premier Ford truck community! You are currently viewing our boards as a guest which gives you limited access to view discussions and access other forum features. Seems that they keep your RPM's HIGHER until it is warmed up. Once the engine is running again, replace parts one at a time, so if a new part is bad, we know what we just messed with and can put it back the way it was. Ford C4 and C6 Transmission Trouble Shooting Guide It's good to have a source to guide you when you're struggling with troublesome transmission function. If the FICM has low voltage it will often cause a hard start and rough run when cold, but the problem may clear up as the engine warms.