Question about 2001 Jaguar S-Type

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Wont idle cold

Car wont idle when cold runs fine after warms up no check eng. light so i cant get comp. code

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  • Jaguar Master
  • 823 Answers

Check the engine crankcase breather for air leaks little rubber elbow rear of inlet manifold. plus oil separator under fuel rail

Posted on Mar 22, 2014

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This chry. 300 is running so cold it wont defrost or get me warm. even after eng. runs for an hour.


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Mar 04, 2015 | Cars & Trucks

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1988 bronco 5.8 wont idle cold floods easy and has a check engine light that does eventually goes out


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2006 ford 6.0 diesel idles cold but wont accelerate


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Dec 26, 2013 | Ford Cars & Trucks

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Code 15 ignation output car runs good when cold gets warm check eng light miss.lacks power not hitting on all cyl. suspect bad ignitor..


Check the EGR valve. Look up on the internet where on your car it is located. Find the vacuum line connected to it. Start the engine cold and as it warms up and starts to miss and stumble, pull off the vacuum line from the EGR. If the car idles fine, replace the EGR. Ignition system problems are more likely to occur at idle or lower rpm. Besides, testing the EGR is free, easy and do fail in high mileage vehicles.

Jun 02, 2010 | 1988 Acura Legend

1 Answer

89 dodge shadow. hard start. normal idle cold, fast idle warm. sometimes it wont start until i hear fuel pump activate.


Hello,
The car may be hard to start because it may need a normal tune-up. If the spark plugs are pretty used, they will slowly stop burning as much fuel because the spark slowly gets lesser and lesser. On a cold day the fuel is harder to ignite with a small amount of spark.
Normal idle when its cold means that your cars idle is probably too high. If you lower the idle, the choke on a cold day will keep the idle a little higher until the motor warms and then it will kick back off. If the idle is too high, it will run very rich, smothering itself with fuel, and causing the idle to stay low. When the car warms, its creating better spark when its warm, and with the idle being too high its running at a fast idle.
The car wont start sometimes can be the cause of a few things. If the ground is bad on the fuel pump, it wont make a good connection sometimes for when you turn the key on, the fuel pump dont pump the fuel to the engine. Another one can be that your accessory switch can be loose going to the fuel pump. I think its your ground though. Good luck! Hope this helps.
Have a nice day. -Steve

Dec 06, 2009 | 1989 Dodge Shadow

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