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1991 Chevrolet K1500 Cheyenne 5.7L Lock Up Torqe Converter
The scan tool and terminal F of aldl both show computer commanding lockup off. Happens when tps is close to 2 and map is around 4.25. Map sensor is reading what engine vacuum really is, around 3". Adjusted tps to .44. Block learn and integrater both hover ...
FIX posted 2/7/2001
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Message Closed
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| VIN | 1GCDK14K4M |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Affected | Lock Up Torqe Converter |
| Conditions | Drops Out at Verry Light Throtle Changes at Speed |
Message Closed
Vehicle Data
1991 Chevrolet K1500 Cheyenne
| VIN | 1GCDK14K4M |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Affected | Lock Up Torqe Converter |
| Conditions | Drops Out at Verry Light Throtle Changes at Speed |
Video