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Car starts when cold but not warm

Could this be the problem

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I have had this problem in the past. It is a weak coil or pick up coil. When it is cold it will start and run just fine but when it warms up it will sputter and not run good at all. You will need to change the coil or pick up coil in ya distributor and it will run fine.

Posted on Dec 10, 2012

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Starts right up but once it warms up it dies have messed with the air gas screws that's fine don't know what the problem is


My car runs good when it's cold but stalls once it warms up ...

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My car runs good when it's cold but stalls once it warms up? ... In this situation, you can usually re-start the engine once it has hada chance to cool back ... it'll fill-up and exits fuel right up and out the vent tube which dumps it down the middle of ...

Car starts and after warmed up.. it dies!! HELP! - Honda-Tech

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Jun 28, 2010 - Car starts and after warmed up.. it dies! ... but if i let it sits for awhile till the engine is cool down it starts right up but after its warmed up.. it dies.

Troubleshooting an Engine that Stalls at Idle When Warm ...

www.gearheaddiva.com/.../troubleshooting-an-engine-that-stalls-at-idle-...

Dec 21, 2015 | Cars & Trucks

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Bottom falls out of idle after revving engine cold


Its probably a problem with the water temperature sensor. Also do not rev a cold engine. The engine has a "cold start sequence" which is similar to a choke. When the engine gives a cold signal, the fuel mix is made richer and the timing is changed until the engine warms.

Let the engine warm at the preset factory settings. Sometimes the O2 sensors will cancel the cold start sequence before the water is warm. Racing the engine will warm the O2 sensors too quickly.

May 14, 2014 | 1993 Mercury Grand Marquis

1 Answer

BMW will not start when warm


is it turning over.
could be a faulty main fuse.
problem is you cant see in the fuse to see if broken.
when cold points contract making it start, when warm it expands and creates a void

Apr 06, 2013 | 1996 BMW 328i

1 Answer

96 honda civic engine ,starts & runs fine cold-but dies when warmed up


Did you find a fix?
Same problem, wondering how you fixed it?

Mar 07, 2012 | Cars & Trucks

1 Answer

My 2004 RX8 won't start when the engine is warm, when its cold it starts no problem. If I drive the car till it at operating temp and shut it down I have to wait an hour until start it again


if this car is on the cold start injector when it is defective. Injects additional fuel to the engine is still warm. Is it to feel warm by running more than normal gasoline smell?

Mar 15, 2011 | 2004 Mazda RX-8

1 Answer

My wifes 2003 toyota highlander when she starts it there is what appears to be a gas fume like smell in the car. it seems to go away when the engine isd warm


You should have the fuel injectors and the especially the "cold start injector" checked for leaks. The cold start injector only operates during cold starts. If you don't notice the problem during warm starts, then the cold start injector is the place to start.

Feb 08, 2011 | Toyota Highlander Cars & Trucks

1 Answer

2.0d x-type 2005 Est. Starting problems when engine is warm


Ok, time for car school. The vehicle is operated by the computer, every electrical concept that is. When the engine is cold, it starts fine because the computer has placed it in "cold start mode", putting more fuel into the engine than normally would until Once the engine is warmed up, a temperature sending unit or temp sensor tells the computer to change to normal run mode. IF said temp sensor is faulty and is not telling the computer to make said change, it stays in cold start mode, still dumping excess fuel in the engine that is now not required, cause it's warmed up. Like keeping the choke closed on older vehicles. Now I think you can answer your own question, when this no start action is happening after warm up and it always starts fine when cold, what's the first thing you check ? Right, the unsuspected temp sensor. Change that and no more start problem. Have a wonderful day. Glad I could be of service.

Jul 11, 2017 | 2005 Jaguar X-Type

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Starts cold when warm shuts off


May be the fuel pump, experienced similar problems in 1995 Intrepid. When the pump warmed up, it would start to loose pressure and car would sputter and die, but would start back up. If it started it would usually begin sputtering again and eventually die.

Feb 03, 2010 | 2000 Hyundai Accent

1 Answer

When the car is warm after a while it is hard to start, takes a few cranks. when it starts it smells like fuel. on cold start it is fine.


Kinda sounds like the ECM or "start mixture" control module is faulty or is getting a bad input from a sensor. For example, it man not be getting a proper temperature sense from the exhaust manifold or the intake manifold water temp sensor. So, every start seems like a cold start....

If your cold start is on a "cold" engine - fine. If your cold start is on a "warm" engine - problem. Mixture is too rich for a warm engine.

Again, could be sensor sending a bad temp signal... or the control module not responding to the signal.

A bit too complicated a problem to exactly troubleshoot via long distance... but you now have a starting point.... -Jim

Oct 23, 2009 | Chevrolet Suburban 2500 Cars & Trucks

2 Answers

4 cyl Engine starts and idles ok...give it throttle and it dies


I need to get a clear mental picture of what exactly is happening.

With this said, you stated that the car "runs fine" until warmed up.

Q: When you start the car when cold it idles fine?
Q: If you allow the car to idle until "fully" warmed does the car stall?
Q: As the car begins to warm up, Does the RPM fluctuate abnormally?
Q: Does the car Only stall when you press on the gas pedal or does it stall just sitting and idling in addition to pressing the gas pedal?
Q: If you can drive it while cold does the car stall during acceleration when warm or only at Stop Signs / Lights?
Q: If you wait 20min or so, can you start the car again?
Q: How many miles are on the car?

Mar 27, 2009 | 1995 Toyota Camry

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