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#1
06-29-2003, 08:37 PM
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Loss of Power & rough idle
I was driving home tonight & suddenly my 1993 pontiac grand prix(3.4L DOHC)started cutting out at 1500-2500 RPM. I noticed when I put the accelerator pedal to the floor, the problem subsided. When I got home I restarted the car...it started up fine but after 5 seconds upon startup it idled like it had a really bad miss in the engine. I looked at my spark plug wires and can't really tell if one is arcing. But I did notice that there was some wear on my AC coolant lines in the front of the engine(where one of the spark plugs were laying). Advice anyone, does this sound more serious than a acring spark plug? Another thing I went to check for making sure that all of my plugs were secure on the distributor on the front of the engine. I felt one loose so I put it back on...I let the engine run for 2 minutes...it ran smoothly then the rough idle problem happened again & the car dies out.
Last edited by 93 GP 3.4; 06-29-2003 at 09:22 PM. 
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#2
11-18-2003, 06:05 PM
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Re: Loss of Power & rough idle
Egr?
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#3
11-18-2003, 10:45 PM
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Re: Loss of Power & rough idle
I had a 92 GTP and it did the same thing rough idle and loss of power between that rpm range i also had 128000 miles on it but yeah the fuel filter has never been changed on it and i finally did change it. wow it ran a lot better im surprised i didnt burn out my fuel pump. so try that
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#4
11-19-2003, 07:05 AM
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Re: Loss of Power & rough idle
Id try the fuel filter first, most people dont change them regular and that can lead to injector problems also.
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