Question about Chrysler 300M

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2001 300m hard start when hot.

Car starts no problem cold. Will restart after 30 to 60 minutes sometimes runs rough when first started (hot) then smooths out and runs great.

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  • 130 Answers

I recommend you to go to your local Autozone store and ask them to check
your vehicle for emissions and other engine problems.
This is a free service. They will show you a print out of the probable causes of the problem you are having and the cost of the parts you need to fix your vehicle.

Posted on Apr 21, 2014

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6 Suggested Answers

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Posted on Jan 02, 2017

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leetamara
  • 702 Answers

SOURCE: Stalls when engne warms up

Your ECT (Engine Coolant Temp) sensor is bad. What's happening is at cold start it richens up the fuel mixture and as it warms up the ECM thinks it's still cold and essentially the "choke" is still on. Also check your coolant level. If you don't have enough coolant in you engine/radiator, the ECT doesn't know what to do so it thinks it's cold.

Posted on Jul 13, 2008

frcs68
  • 1605 Answers

SOURCE: 1978 Datsun/Nissan 280Z 2

go to zcar.com ask question there. you will get answer and what to look for.

Posted on Oct 12, 2008

csmock132
  • 4669 Answers

SOURCE: 93' 4.3 chev runs rough at times

Have someone turn the key on while you watch the injectors. If any gas leaks out of the injectors, without cranking on it) replace the o'rings around the injectors.

Posted on Mar 12, 2009

wracefans24
  • 1985 Answers

SOURCE: 1994 GMC Jimmy engine runs rough when cold; smooths out when warm

you need to have the codes checked to know what direction to start repairs,Autozone does this for free

Posted on Jan 20, 2010

  • 105 Answers

SOURCE: 2000 LeSabre starts but runs very rough and stalls. After

My 2002 Lesabre (app 115000 miles) started something like this. Also the loose gas cap had been coming on for quite a while. I replaced the vacuum line from the air intake to the fuel sensor. It is under the engine cover (twist off the oil filler to remove the cover). There are two hoses together that come of the air intake. The small one goes to the top of the engine. The other goes across the front and makes a 180 turn back to the sensor. Chances are the 180 piece is cracked. It all comes from the dealer as one unit. $25
Seems to have fixed my problems. So if your car is running a little rough. Shutters under load. If the gas cap loose is coming on or probably a number of symptoms this might be the answer. I would replace this item. A cheap try.

Posted on Mar 12, 2010

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