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1991 Chevrolet S10 4.3L Poor Idle Quality
We are stumped here and in need of some help. Customer brought in an S-10 pickup that runs at high idle now at all times ([...] rpm). He stated that he pressure washed the engine 4 days ago and it's been that way ever since. scan tool shows two codes: 21, 24. ...
FIX posted 1/13/2003
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Message Closed w/FIX
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| VIN | 1G1CS14Z2M |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Symptoms | Poor Idle Quality |
| Occurs | Always |
Trouble Codes
| 21 | throttle position sensor |
| 24 | vehicle speed sensor |
Message Closed w/FIX
Vehicle Data
1991 Chevrolet S10
| VIN | 1G1CS14Z2M |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Symptoms | Poor Idle Quality |
| Occurs | Always |
Trouble Codes
| 21 | throttle position sensor |
| 24 | vehicle speed sensor |
25 Replies Received
25 Replies Received
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