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1990 Chevrolet C1500 Cheyenne 5.7L Poor Idle Quality, Surge
Started out with a slightly surging idle while Trying to get vehicle to emissions test. Propane enrichment over TBi increased [...] vac leaks at TBI base, EGR and vacumn nipple . replaced and repaired all. Now drops RPM with [...] other leaks indicated. Tried ...
FIX posted 9/6/2016
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Message Closed w/FIX
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29 Replies Received
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Related Documents & Media | VIN | 2GCEC14K5L |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | Fuel Injection / TBI |
| Emissions | Ca emissions |
| Symptoms | Poor Idle Quality, Surge |
| Occurs | Always, Even in Base Mode |
Trouble Codes
| 42 | spark control |
| 43 | knock circuit |
Message Closed w/FIX
Vehicle Data
1990 Chevrolet C1500 Cheyenne
| VIN | 2GCEC14K5L |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | Fuel Injection / TBI |
| Emissions | Ca emissions |
| Symptoms | Poor Idle Quality, Surge |
| Occurs | Always, Even in Base Mode |
Trouble Codes
| 42 | spark control |
| 43 | knock circuit |
Video