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1985 Chevrolet S10 Blazer 2.8L Excessive Emissions, MIL Lamp on, ECM data out of rang
Ok fellow Tech’s, here’s my problem. This thing thinks it’s running at wide open throttle, (I think) because the voltage on the TPS wire to the computer is at 5 volts all the time. First I thought it was the sensor, but when I unplugged it the ECM still read 5...
FIX posted 1/22/2001
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Related Documents & Media 
| VIN | 18CT18B2F8 |
| Engine | 2.8 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | CARB |
| Emissions | CA EMISSIONS |
| Symptoms | Excessive Emissions, MIL Lamp on, ECM Data Out of Rang |
| Occurs | Always |
Trouble Codes
| 13 | o2 sensor circuit |
| 21 | TPS circuit |
| 23 | M/C solenoid |
Message Closed w/FIX
Vehicle Data
1985 Chevrolet S10 Blazer
| VIN | 18CT18B2F8 |
| Engine | 2.8 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | CARB |
| Emissions | CA EMISSIONS |
| Symptoms | Excessive Emissions, MIL Lamp on, ECM Data Out of Rang |
| Occurs | Always |
Trouble Codes
| 13 | o2 sensor circuit |
| 21 | TPS circuit |
| 23 | M/C solenoid |
Video