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1987 Pontiac Bonneville 3.8L Poor Idle Quality
Idles around 1200. TPS .37. IAC 60. The computer never appears to try to lower the idle. IAC won't go below 60, but it will go up to 170 in gear with a/c on. When first started it idles at 950, and then slowly creeps up. Any help would be greatly appreciated. ...
FIX posted 3/24/2003
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Message Closed w/Summary
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| VIN | 1G2H25439H |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Symptoms | Poor Idle Quality |
| Occurs | Always |
Message Closed w/Summary
Vehicle Data
1987 Pontiac Bonneville
| VIN | 1G2H25439H |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Symptoms | Poor Idle Quality |
| Occurs | Always |
9 Replies Received
9 Replies Received
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