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Multiple Misfire and Cruise not available?

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  #3  
Old 06-23-2009, 09:03 AM
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Old 06-25-2009, 09:46 AM
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In my experience it wouldnt be a stretch to assume the coils are bad. However it def. sounds like a vacum leak. Check the intake manifold seals as well. try using a little bit of prorane/hair spray/ around the intake if you get a fluctuation in the idel then you know you have a leak.

GL
 
  #5  
Old 06-26-2009, 06:22 PM
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I had the same problem at 127,000 miles. A couple of the coils were bad when they tested them. Replaced them all and the plugs. What a difference. Even gained better gas miliage and acceleration.
 
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Old 06-28-2009, 01:57 PM
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I had this very same problem 2 months ago. First thing I checked was vacuum hoses. My culprit was the large diameter hose running from the PCV valve on the A-side bank (close to front of hood) to the intake for the positive crankcase ventilation. The original hose is smooth and had a 2" long rip in it. When I twisted the hose back and forth it either closed the rip or opened it wide open.

The updated hose has reinforcement ribs for strength.
Hope you find the problem soon. You can always take your car to an Advanced Auto or Auto Zone and have the codes run.
 
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Old 03-29-2018, 11:28 PM
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there is a ground wire which can affect the coils when corroded or broken.
 

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Old 03-30-2018, 07:56 AM
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Originally Posted by haroldjoling
there is a ground wire which can affect the coils when corroded or broken.
what colour is the ground wire from the coils and where does it connect to the ground point.
 
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