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1993 Chevrolet Camaro 5.7L No Start
with the opti-spark system, the est signal is required for the engine to run. In 1994, GM renamed the circuit(more appropriately) IC(ignition Control). Apparently there is a short to ground in the circuit. I have been able to get a spark by "tickling" the modu...
FIX posted 11/8/2001
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Message Closed w/FIX
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2 Replies Received
2 Replies Received
| VIN | [No VIN Available] |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Symptoms | No Start |
| Occurs | Always |
Trouble Codes
| 42 | est circuit grounded |
Message Closed w/FIX
Vehicle Data
1993 Chevrolet Camaro
| VIN | [No VIN Available] |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Symptoms | No Start |
| Occurs | Always |
Trouble Codes
| 42 | est circuit grounded |
Video