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1989 Chevrolet P37 7.4L Hesitation, lean overall
We have created a good one for ourselfs again! We installed a Turbo City gm type tbi kit and the fun just keeps on a coming! The problem is a tip in hesitation in closed loop. The scan tool and lab scope shows the map sensor response to the drop in vacuum ...
FIX posted 1/14/2000
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Message Closed w/FIX
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| VIN | 1GBKP37W0K |
| Engine | 7.4 L / 8 cyl |
| Emissions | Turbo City TBI kit. |
| Symptoms | Hesitation, Lean Overall |
| Occurs | Hot, Closed Loop |
| Misc. | Class A |
Message Closed w/FIX
Vehicle Data
1989 Chevrolet P37
| VIN | 1GBKP37W0K |
| Engine | 7.4 L / 8 cyl |
| Emissions | Turbo City TBI kit. |
| Symptoms | Hesitation, Lean Overall |
| Occurs | Hot, Closed Loop |
| Misc. | Class A |
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