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1989 Pontiac Firebird Trans Am 3.8L Poor Idle Quality, MIL Lamp on
This little turbo 3.8 is very lean at idle. It acts like a large vacuum leak but none can be found. Fuel trims and O2 readings come back to near normal values above 1800 RPM. I have checked the intercooler,Blocked EGR, intake gasket,brake booster and all vacuu...
FIX posted 8/30/2008
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18 Replies Received
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Related Documents & Media | VIN | 1G5FW2174K |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Symptoms | Poor Idle Quality, MIL Lamp On |
| Misc. | Turbo |
Message Closed w/FIX
Vehicle Data
1989 Pontiac Firebird Trans Am
| VIN | 1G5FW2174K |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Symptoms | Poor Idle Quality, MIL Lamp On |
| Misc. | Turbo |
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