Misfire round 5 - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-08-2012, 11:25 PM   #21
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Yeah, it'* only doing it under boost.....I'm going to replace the cat next week...Gonna drive my new high mileage truck til then.
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Old 05-09-2012, 02:29 AM   #22
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I had the same exact problem with my car ...found out it was leaking from around the injector but the injector itself was good but not sealed maybe u should have a smoke test performed before u give up on it....
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Old 06-18-2012, 11:26 PM   #23
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Well, does anybody know where for sure the second stage fuel pump relay is? I'm to the point that I think that may be the problem....gonna try something else just to make sure, but this is the next step I think...I'd like to at least get this car running right since the transmission is giving me fits on the truck.
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Old 06-19-2012, 12:15 PM   #24
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The fuel pump relay is in position 39 in the fuse block under the rear seat. It is the only relay in one of the outside corners of the array. I am not aware of "second stage" relay.
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Old 08-27-2012, 05:28 PM   #25
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Ok so I replace the relay and the fuse....Its actually worse now. When you throw it in reverse to back out of the parking spot, it falls on its face...its acting up at idle now too. I'm to the point where it won't even drive to the shop. I'm down to o2 sensor, ICM, MAF, Crank position, Cam position, etc.... I really would like to get this car running again since I'm back at school and my pickup is kinda expensive to drive back and forth every weekend....I'm gonn see if I can't get a vid of what it'* doing this weekend if I can make it home since my pickup'* fuel pump kicked the bucket saturday.
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