Car runs rough when cold
08-04-2007, 05:10 PM
#1
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Join Date: Oct 2006
Location: Post Falls, Idaho
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Car runs rough when cold
I get a slight vibration for the first 3-4 minutes i start the car. This is when the engine is cold. It is like the kind that would cause the dash to rattle. This has happened for a week now and it goes away once it warms up.
08-05-2007, 07:53 AM
#2
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Join Date: Sep 2004
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1001 things could be possible. Could be a plug that 's not firing right after the cylinder warms up it works fine. Year & 1/2 ago I had an intake gasket leak on my Vortec and it would sound like a diesel and run rough until it got warm and the leak would seal up. In this case there was a very slow loss of coolant.
What do your sensors read during the problem?
Does it run bad on a hot restart?
Does it run bad until it goes into closed loop?
Do you still have a blower? Doesn't it have a cotton filter? Could it be over oiled?
Too many questions
What do your sensors read during the problem?
Does it run bad on a hot restart?
Does it run bad until it goes into closed loop?
Do you still have a blower? Doesn't it have a cotton filter? Could it be over oiled?
Too many questions
08-05-2007, 10:36 AM
#3
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Join Date: Oct 2006
Location: Post Falls, Idaho
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Runs fine after restarting it warm. The car goes into closed loop after 4-5 minutes and it runs fine before it gets there. The filter came factory oiled so it is fine. My sensors show no signs of a problem.
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