1996 Corsica 3.1v6 won't idle - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 08-21-2011, 02:45 PM   #1
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Default 1996 Corsica 3.1v6 won't idle

Ran fine one day...would not run the next...replaced Idle Control Motor and cleaned throttle body...udles very slow and rough..seems fine at higher speeds...suggestions?
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Old 08-21-2011, 02:52 PM   #2
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Welcome to the forum!
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Old 08-21-2011, 02:54 PM   #3
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Moved to correct area.

Start with testing your fuel pressure.
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Old 08-21-2011, 03:31 PM   #4
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Thanks. should be 41 to 47 psi, right?
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Old 08-21-2011, 03:43 PM   #5
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Ya, right around the 45psi range. That'* with key on, engine off, KOEO. Then start the engine. may go down a little bit, but still in that area. If it'* low, you either have a clogged filter, or a weak fuel pump.
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Old 08-24-2011, 10:45 AM   #6
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Wondering if a low idle/stall could be the Fuel Pressure Regulator?
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Old 08-24-2011, 10:54 AM   #7
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yep, you can take the vacuum tube off and smell for fuel, if you can smell it its bad. what pressure readings did you get?
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Old 08-27-2011, 09:49 AM   #8
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Finally got a engine check reading...P0300 Random Cylinder Missfire, P0171 Bank1 System to lean, and a P0102 Mass Vol Air flow Circuit low input. Fuel pressure looks good...
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Old 08-29-2011, 07:18 AM   #9
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i would start by cleaning the maf,
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Old 08-30-2011, 09:45 AM   #10
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Cleanned the MAF...still won't idle...thinking there is a vaccuum leak maybe...but can't fnd one...
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