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1990 GMC C1500 Sierra 5.7L Poor Idle Quality, Hesitation
Customer's only complaint is a hesitation and runs rough only after a hot soak of approx 20 minutes. I found that fuel pressure would drop to zero after only 90 seconds. I checked fuel pressure at the outlet of the fuel filter, with a "T", so I could have the ...
Summary posted 5/18/2004
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19 Replies Received
19 Replies Received
Related Documents & Media | VIN | [No VIN Available] |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | OBD1 |
| Symptoms | Poor Idle Quality, Hesitation |
| Occurs | After a Hot Soak |
| Misc. | Regular Cab, 2 Wheel Drive |
Message Closed w/Summary
Vehicle Data
1990 GMC C1500 Sierra
| VIN | [No VIN Available] |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | OBD1 |
| Symptoms | Poor Idle Quality, Hesitation |
| Occurs | After a Hot Soak |
| Misc. | Regular Cab, 2 Wheel Drive |
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