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1987 Chevrolet R20 Suburban Custom Deluxe 7.4L Hesitation, Cuts out, Stall, Misfire
After replacing a water pump, left exhaust manifold and starter,and giving it a much-needed minor tune-up, the truck ran fine for about a week. Customer complained of missing/cutting out, mainly on decel, or after cresting a hill. Also, MIL was intermittant. C...
FIX posted 7/9/2000
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| VIN | 1GNGR26N7H |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / TBI |
| Emissions | Ca Emissions |
| Symptoms | Hesitation, Cuts Out, Stall, Misfire |
| Occurs | On Accel, Idle, Intermittently |
| Misc. | 2WD |
Trouble Codes
| 34 | MAP Error |
| 42 | EST Error |
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Vehicle Data
1987 Chevrolet R20 Suburban Custom Deluxe
| VIN | 1GNGR26N7H |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / TBI |
| Emissions | Ca Emissions |
| Symptoms | Hesitation, Cuts Out, Stall, Misfire |
| Occurs | On Accel, Idle, Intermittently |
| Misc. | 2WD |
Trouble Codes
| 34 | MAP Error |
| 42 | EST Error |
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