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1990 Pontiac Firebird Trans Am 5.7L Pings
This car came with with the customer commenting on a lack of power and pinging. We replaced the plugs (the AC one recommended for the ZZ4) and the missing was gone but it still pings. Removed the upper intake and found the aftermarket egr valve had a broken va...
FIX posted 4/8/2004
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Message Closed w/FIX
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9 Replies Received
Related Documents & Media | VIN | 1G2FS23F81 |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Symptoms | Pings |
| Occurs | Hot, on Accel |
| Misc. | Zz4 Engine Installed in 1997 |
Message Closed w/FIX
Vehicle Data
1990 Pontiac Firebird Trans Am
| VIN | 1G2FS23F81 |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Symptoms | Pings |
| Occurs | Hot, on Accel |
| Misc. | Zz4 Engine Installed in 1997 |
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