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1986 GMC S15 High Sierra 2.5L Excessive Emissions, Poor Idle Quality, Cuts out, Stall, Misfire, MIL Lamp on
Here's a weird one! Engine was rebuilt by owner (good, experienced mechanic). Will start and run roughly, occaisional backfire through throttle body UNTIL the alternator 1/2 plug is plugged in and it starts charging. When the alt. is online, the TBI immiediate...
FIX posted 7/14/2011
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Message Closed w/FIX
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16 Replies Received
16 Replies Received
Related Documents & Media | VIN | 1GTCT14E7G |
| Engine | 2.5 L / 4 cyl / GAS |
| Trans | 4-speed Standard |
| Delivery | Fuel Injection / TBI |
| Emissions | CA |
| Symptoms | Excessive Emissions, Poor Idle Quality, Cuts Out, Stall, Misfire, MIL Lamp On |
| Occurs | Always |
Trouble Codes
| 33 | Map signal voltage high |
Message Closed w/FIX
Vehicle Data
1986 GMC S15 High Sierra
| VIN | 1GTCT14E7G |
| Engine | 2.5 L / 4 cyl / GAS |
| Trans | 4-speed Standard |
| Delivery | Fuel Injection / TBI |
| Emissions | CA |
| Symptoms | Excessive Emissions, Poor Idle Quality, Cuts Out, Stall, Misfire, MIL Lamp On |
| Occurs | Always |
Trouble Codes
| 33 | Map signal voltage high |
Video