Dec 20, 2009 · Tractor: Iseki TU2100F - 24hp 3cyl The problem started yesterday afternoon after several hours of use. If it has not cooled down it will spit and sputter after you put it in gear and try and move tractor. Nov 21, 2015 · The engine runs cuts entire lawn but sputters instead of running smoothly. Will a malfunctioning thermostat cause it to run rough, irratic haigh idle and eventually die? After 10 - 15 min cranks up and runs ok for a few After installing the battery, the engine ran rough with misfires after warm-up (was fine cold), and eventually would stall. Misfire after warm up. 3 in it. Once the engine has cooled, if I start it again it will do Aug 18, 2023 · Engine Idling Rough When Warm: How To Fix? Most likely, the causes of rough engine idle crops from the basic functional components like direct fuel injectors, PCV valve , EGR valve, Oxygen sensors, vacuum leaks, air filter, and spark plugs or wires. Runs great until warm, idle drops to 600 rpm, progressively gets more rough, but does not die. Jan 23, 2021 · 2004 - 2008 Ford F150 - Idle starts to get rough and "missing" after the truck warms up. 5, 44,000 miles, is making me nutty! For months is had a slightly rough idle and a occasional surge at low rpms. Truck runs fine except if it idles and doesn't move for more than 30 minutes or so the idle starts getting rough and the engine starts missing a bit (slight backfire pops out tailpipe). After it cools down completly it will run. When that happens, it is VERY SLOW to accelerate. New coiNeall new Aug 26, 2018 · Once warmed up, the car idles really rough in gear (Drive), RPM really starts to fluctuate between 500 and 700, the car kinda shakes, and the engine is likely to stall if I leave it in gear (and with car not moving) for much longer. Nov 20, 2017 · Kevin, It was running rich before I disconnect the o2 sensor as well. 3 PSD that i bought in Texas. I did find several similar posts but I'm still not sure what's up. May 26, 2008 · Symptoms:The engine runs really smooth when cold started. Starts great, good initial idle, 800 rpm. I have a rough idle but only after the truck has warmed up to operating temp. 0) begins to run rough after it gets good and warm. I also put stabil in gas. Sep 23, 2010 · After that, I fired it up and let it run for 20 minutes. 6 engine . It has a new Edelbrock 1405 carb on it. Just recently my 2006 F-150 Lariat is Bucking/Misfiring and throwing multiple codes such as cam position indicator/misfire and a few others. then it starts up again normally. Revving the engine hard doesn't clear it. Pulls code P0001, fuel volume regulator, control Jan 5, 2014 · Hi I've been having some issues with my truck over the past couple months, hoping someone can help me out with this. It runs to good except for the rough idle and shuttering. And when it cools down it runs great again. I replaced all plugs and wires, complete new opti spark, new throttle position sensor, new MAF, new Map sensor, new IAC sensor, new TPS, new water pump, thermostat and coolant temp sensor, new O2 sensors. Engine started sputtering/misfiring really bad. Runs fine above 2000 rpms. KOEO (565, 556) KOER (116, 311, 411, 538, 536, 632). When this happens it's like a "erratic electrical component operation" and the lights and radio flicker but do not reset or shut off. Aug 18, 2023 · Engine Idling Rough When Warm: How To Fix? Most likely, the causes of rough engine idle crops from the basic functional components like direct fuel injectors, PCV valve , EGR valve, Oxygen sensors, vacuum leaks, air filter, and spark plugs or wires. It will always start right up put wont take a load on engine unless you let engine cool down Feb 9, 2015 · 2004 - 2008 Ford F150 - 2006 F-150 5. also, as I understood, 1 and 3 are served with 1/2 of the coil, 2 a 4 served with other half. The computer only looks at the O2 sensors to control the air fuel ratio once the engine has started to warm up, it uses firmware to set the air fuel ratio when the engine is cold. WTF! My truck is a 1991 Ford F-250 with 408W and a 9psi Powerdyne. Apr 5, 2017 · 1997 - 2003 Ford F150 - rough idle, after warm - 4/5/17. Sep 22, 2004 · The engine runs great untill it warms up then it starts running rough. i have a 2004 f150 with a 4. Check the fuel pressure cold, then after the engine warms up and acts up. Jan 8, 2012 · 1987 - 1996 F150 - Runs rough after warmed up - My son's 1990 F150 (8 cyl, 5. 4. If it runs at any of these times, the performance of the engine is affected. 0 Powerstroke about a month ago, it ran good for a week then one morning I pulled into work and parked and let it idle it started idling really rough, normally my truck idles at a little under 1k rpm but when this issue starts the trucks RPM will jump slightly up then dive down to 500 RPM, all the while it seems like the engine is trying to bring the idle RPM Jan 7, 2008 · 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. Plugs (gapped), distributor cap, rotor, exhaust manifold gasket are all new. Always when warmed up. The lean air-fuel mixture will cause problems disregarding whether the engine is hot or cold. Jan 24, 2023 · 2004 - 2008 Ford F150 - 4. It has a rough idle when cold but will run after it gets warm. It started well and ran great cold, then ran rough at idle with a miss after warmed up. I set the timing on the cold engine and it ran very smooth. Dec 9, 2016 · As an aside to the rough idle. In pharmacy not more then 15mins car parked in underground garage, Car start up again fine just like from cold start engine running fine & normal. Its just after it gets good and warm it idles very very rough, and the knocking sound is also very loud. Nov 21, 2015 · The engine runs cuts entire lawn but sputters instead of running smoothly. Now I think its something simpler. The engine misfires or runs rough when it is fully warmed up at constant speed or stopped and really bad when pulling a load up a hill or when power breaking. I am suspecting the problem might be an Oxygen sensor but i think I should ask around before I start throwing parts at it the truck is a 99 and has 160 km on it. Jan 11, 2014 · The engine computer pays no attention to the 02 sensors during warm up but once the engine is warmed up, then it starts relying on the 02 sensors to provide the proper air/fuel mixture. Aug 3, 2005 · Enginge runs smooth at start up then after 2 minutes engine runs rough. 4, and after truck warms up and you try to accelerate it stumbles as a misfire and also if I release the gas peddle it also does the same thing, I changed the plugs and coil packs but still have same symptoms, had truck checked code for Apr 24, 2023 · Reason #7: Bad Temperature Sensor (Engine Coolant Temperature Sensor) The engine coolant temperature sensor monitors the engine’s temperature and sends this information to the engine control module. When engine performance drops, several causes can lead to problems like decreased power output or failure to start. Everything smoothes out just above 3,000 rpm & codes 0171, 0500 & 1391 are displayed. Mar 22, 2016 · truck runs rough when it warms up 17 Answers. Aug 15, 2012 · 1987 - 1996 F150 & Larger F-Series Trucks - Running rough when warm - 1994 F 150 4. 3/4 ton, 350 TBI engine with 125,000 miles. 1998 oldsmobile 88. When on flat away it goes fine again till stopd at redlight again then idle goes little up drops little up drops. Here's the pattern: Truck runs fine from a cold start, and continues to run fine once it warms up. I've noticed this engine doesn't warm up all the quickly. Oct 18, 2011 · This was from a cold start-up outside temp about 50s. Pushing the throttle at this point causes the engine to stumble slightly before it revs up. When the EGR valve malfunctions, it doesn’t follow the rules. It still runs good, after the choke plate has completely opened and the engine hasn't run for more than say 5 minutes. The motor shakes until you rev it up and then it goes Nov 21, 2015 · The engine runs cuts entire lawn but sputters instead of running smoothly. Apr 4, 2018 · 2004 - 2008 Ford F150 - Runs rough after warmed up - I have a 2006 F150 with 5. Aug 24, 2018 · I have a 97 F350 7. Jun 11, 2012 · 1997 Riviera - 3. We checked the codes. I've replaced the fuel filter and the engine coolant temperature sensor( check engine light readout said it was Jul 8, 2019 · Looking for guidance on narrowing down the culprit for a misfire. It’s important to have this problem resolved before the engine starts stalling. 6L rough idle when warm - I've done some searches but haven't really found a definitive answer. When starting a WARM engine (3800 Series II) the idle is unstable, rough and stumbles for 3 to 5 seconds, then smooths out. It will idle smooth for a few seconds then start to jump. I don't get a temp light, and the engine seems to run at normal temp, although I don't have a temp gauge at this time. 8 Liter, L36 - 139,795 miles I'm posting this question in TB because the problem hasn't been solved in other Buick forums. Shut off for a few minutes and process starts over. 4L Intermitent Rough Idle When Warm - I have a 05 fx4 5. Once the engine gets to around 110-120 the rough idle/RPM hunting behavior begins. Jul 8, 2019 · Looking for guidance on narrowing down the culprit for a misfire. , a mower running rough after warm-up can surprise you. I was sitting at a stop light the other day and all of a sudden my truck started running really rough. at 110K I replaced spark plugs (broke 4) at 115k the rough idle started Nov 21, 2015 · The engine runs cuts entire lawn but sputters instead of running smoothly. 9 220,000 miles and manual trans. Another thing that effects a warm engine running rough is a coil going bad. Other issues can arise, depending on the environment and unexpected conditions. You would actually have more issues with compression (if that were the issue) upon cold starting your engine. My Sequoia has 210K on all 8 original coils. 4(130K miles) that will start and run fine. It is too late to get it out of the back yard to take it for a test drive, will do that tomorrow evening. A malfunctioning temperature sensor can send incorrect readings, which causes a rough start that improves as the engine warms up. In this article, we'll look at some of the most common causes of a rough idle in the Silverado and how to fix the problem. It warmed up nicely, ran smoothly the whole time, held idle nicely even after the temp came up to normal and not once did it sputter or lose rhythm. What replacement coils did you use? As an FYI, coils don't require maintenance replacement, especially OEM Denso units. Instead, it sticks open and leads to a rough idle, or even worse, a stalling engine. the truck runs fine when i first start it but once it warms up it start to sputter when i give it the gas. Runs great when engine is cold. I have it fully warmed up, and I pulled off and capped each vacuum connection in turn to try to find a leak (brake vacuum line, manifold vacuum to TH350/HVAC, and the vacuum and PCV ports Aug 30, 2019 · If you own a Chevy Silverado and it's idling rough, you may be feeling frustrated. any sugges Aug 18, 2023 · Engine Idling Rough When Warm: How To Fix? Most likely, the causes of rough engine idle crops from the basic functional components like direct fuel injectors, PCV valve , EGR valve, Oxygen sensors, vacuum leaks, air filter, and spark plugs or wires. -When you have a choice, buy American. 4 Engine Misfire/Runs Rough when warm - Hello Everyone, I've seen several other topics about this issue. After about a half hour, the engine starts to idle roughly and sometimes stalls. rough idle, after warm. Sometimes it 'll jerk a couple times , other times it dies. I was able to nurse it home and let it sit a little. I changed back to the old COPs and it runs the same. No change. Finally the codes came up a week apart for the intake and exhaust valve solenoids. It has started ideling rough when i come to a stop light or slow down to 10 mph or less. Does not over heat. Aug 5, 2011 · Most of you know I installed a rebuilt 350 engine with 350 tranny a couple months back. When towing trailor up on ramps or long hills it slows a n goes slows n goes like under load its funny acting. But once you stop, shut the engine off, and come back to restart it while the engine is still warm, it'll misfire/run terribly. We’ve seen a lot of issues lead to a rough-running car at start up. First I replaced the MAF sensor after finding many posts on here about it. I've thought about blocking off a portion with cardboard just to bring it to temp faster. and then begins to stumble/idle rough. 9L v8 automatic trans 4x4 club cab short bed. the engine light is on but not blinking. There’s no one clear-cut answer to this problem. Jan 11, 2015 · i have this same problem. 2006 STX (super cab) - 4. Oct 20, 2008 · Any ideas why my truck could be running rough after warm up? It runs perfect at cold start up but after about 1/2 hour or so during normal driving conditions the truck will start to miss,spit,and stall. 4L Rough Idle when warm - Okay I'll try to keep this short. It runs GREAT otherwise and Aug 18, 2023 · Engine Idling Rough When Warm: How To Fix? Most likely, the causes of rough engine idle crops from the basic functional components like direct fuel injectors, PCV valve , EGR valve, Oxygen sensors, vacuum leaks, air filter, and spark plugs or wires. Oct 18, 2013 · Fuel pump could be running great and supplying sufficient fuel a for cold running engine and then as it heats up, with the engine, expansion of the metals in the pump or module reduces the pump output. Nov 15, 2012 · 2004 - 2008 Ford F150 - 2005 5. Jan 5, 2013 · my 84 elky when it cold turns over and idles just and I can drive forever and it will run fine but as soon as I cut off the engine and leave it sit for awhile when I turn it over it struggles to hold an idle and usually requires me to sit there for 3 minutes to get it to idle right and even then it can sometimes start idling rough when I put it in gear but once the car finally starts moving it When your car runs good but idle rough or stalls when it gets warmed up, a lean condition (too much air, not enough fuel) is NOT always the case. It runs, sounds, and idles great for about a half hour under normal driving conditions. I ran the codes, had low voltage x4 oxygen sensors, and random misfires. When your car runs good but idle rough or stalls when it gets warmed up, a lean condition (too much air, not enough fuel) is NOT always the case. 2nd trip other pharmacy is about 10min drive normal traffic moving city speed 25-35mph. But, (and here is the problem) once the engine starts to warm up a bit and the temperature needle starts to climb (gauge says 40) the revs suddenly drop off to around 500 from around 800 and the engine starts to tick over rough and run rough. Dec 23, 2008 · The engine runs fine when it's cold. Under a load on a hill it feels like I am loosing one or two cylinders. Jul 27, 2016 · 1 is the front of the engine (belt area) and 4 is the rear of the engine (transmission area). As a rule when a engine starts to run rough after it warms up the first thing I look for is a tight valve. g. I have a 99 silverado, 5. Has new engine new plugs wires injectors when starts misfiring can shut down start back up and runs fine until a few minutes then starts again. Jan 23, 2013 · My 8n runs rough after warm up. It only does it once in a while. That night when I left, I started the truck, let it warm up for a half hour( I live in the mountains of MT) and as I drove home, the engine light started to flash and I had no engine power. The fuel pump relay cycles on when you turn the key on and there When your car runs good but idle rough or stalls when it gets warmed up, a lean condition (too much air, not enough fuel) is NOT always the case. Jul 27, 2009 · Here is my issue. Ive replaced all ignition parts and rebuilt Carb in hopes of fixing the problem. Jul 15, 2008 · Everything went pretty well until the very end. After warm-up, however, it runs rough and barely idles, sometimes stalling. I read a bunch of posts on oil causing the problem so I used 10-30w and nothing changed. and yes, coil is on top center of the eng and I visually checked it for crack and any damages and it looks good. This isn’t the only engine issue you might face when using such machinery. Mar 8, 2013 · After the plug and cop change the truck will run rough after it is warmed up. In park that rough idle is not as bad but in reverse or drive the engine tries to tear Mar 16, 2024 · Hi all, I just got a 2004 F350 6. I live about 8 miles from my office and given the temps right now (20 degrees) it barely makes it to operating temp by the time i pull in the parking lot. No codes go off and computer hookd to truck says alls well? Oct 9, 2014 · Hi Guys, Ive got a 2000 Frontier SE with the 3. 6L 4WD - 185,000 miles I've been daily driving it just over two years. I tracked it down to worn injector tips. Dec 16, 2010 · Truck runs good but when stopd at redlights or sittn in drive wth foot on brake idle flutters up and down. I have a 95 dodge ram 1500 5. Checked the basics and all seems Mar 9, 2023 · However, this EGR valve isn’t supposed to operate during idle, at wide open throttle, or before the engine is warmed up. What an Engine Needs to Jul 8, 2019 · Looking for guidance on narrowing down the culprit for a misfire. Once the engine has cooled, if I start it again it will do Mar 15, 2019 · My 2013, 2. 3 Vortec, 60,000 on engine, just changed spider injection and nut kit, spark plugs, scanned it and shows no codes, starts fine, runs good until its warmed up, runs rough at idle after warmed up, accelerates fine, doesn't miss when rpm's increased, runs fine when driving down the road, new fuel pump and fuel filter about 7,000 miles ago, have not checked egr valve, but did install a egr Jan 20, 2020 · Just got 1999 V70R with 212k and car starts/idles fine for the first 10-15 min. Stop engine and runs fine again then runs rough. Aug 26, 2018 · Once warmed up, the car idles really rough in gear (Drive), RPM really starts to fluctuate between 500 and 700, the car kinda shakes, and the engine is likely to stall if I leave it in gear (and with car not moving) for much longer. Runs great when cool rough when warm. Today, started right up and ran fine for first 20min and then went back to runing rough, no power. Solution: May 23, 2014 · But, (and here is the problem) once the engine starts to warm up a bit and the temperature needle starts to climb (gauge says 40) the revs suddenly drop off to around 500 from around 800 and the engine starts to tick over rough and run rough. After about 10-15 minutes of driving when engine warms up, engine bogs down, idles rough, and dies when throttle is applied. 4L with 85k on it. Started on january 2nd. However, when I put it in gear the idle dropped so much that it won't stay running. - 2008 5. Nov 27, 2017 · I have a 2000 ford ranger xlt 4x4 with 177000 miles. But cruising it tends to vibrate or shutter. After about 10 minutes when the engine is warmed up and I come to a complete stop the idle tends to fluctuate. Stalls when warmed up to about 200. When cold, the engine easily fires right up. There doesn't seem to be any real pattern. When it gets to operating temperature and the idle drops more it is more noticeable. Sep 17, 2011 · 2004 - 2008 F150 - 05 5. Went out the next day and found out that the truck runs fine until after it heats up a Revving seems normal. The most common cause of a rough idle is misfiring. 3 liter 4x4 137k miles. If I let the truck sit and cool off, it runs well again until it warms up. 4 w/ 75k miles. When the upper radiator hose starts to become warm, the idle gets rougher. Jul 14, 2015 · 2004 - 2008 Ford F150 - Very rough idle after warm-up - I have a 2004 4x4 with a 5. Feb 3, 2009 · This morning the truck started and idled a little rough as it warmed up. Feb 6, 2019 · An engine that runs fine when cold but starts running poorly once it starts to warm up is pretty much a sure sign that one of the two upstream O2 sensors has gone bad. during city driving. Feb 12, 2023 · Until the car warms up, it might be running rough because of an imbalance between the fuel and air in the combustion chamber. It started runing very rough, was about dark so I parked it. The situation gets worse, when the engine gets hotter e. Right now the problem I have is that after the 350 warms up, maybe after five miles, it starts to run rough and smell like it's running rich. It also doesn't have much power going up hills after the engine warms. . For the most part the engine runs normal at first start up, then after warmed up it sounds like a misfire (but its not misfiring) then stalls out. I thought it was transmission at first or mayber the torque converter. I have had it running but been playing with the tranny due to slow shift issues. No codes in on Revving seems normal. Aug 25, 2011 · Once your engine heats up to operating temperature, metal swells and compression is actually aided by this process of thermal expansion. I reasoned that the viscosity of the fuel got thinner after the injector warmed up and it essentially leaked into the cylinder instead of spraying after it got hot. Revving seems normal. My dad and I went in and changed the Jun 17, 2023 · E. Stop at hospital pharmacy to pick up my blood pressure meds. I replaced the 02 sensors because I am well over 100k miles. I have been reading post for days and just cant figure out my problem. Runs great when cold. tinz susjab ryid wmxwm wsqi dfpvgy xqwflx jjzemr qng charqan
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