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1997 GMC C3500 Sierra SL 7.4L Misfire, Poor Fuel Economy, MIL Lamp on, SPARK KNOCK
customer picked up truck came back complaining of eng miss & spark knock . recheck computer came back with p0340 cam sensor code .replaced after market cam sensor with delco [...] circuits to dist. everything [...] still get instant p0340 as soon as start [......
FIX posted 4/17/2003
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Message Closed w/FIX
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11 Replies Received
11 Replies Received
Related Documents & Media | VIN | 1GDKC34J4V |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire, Poor Fuel Economy, MIL Lamp on, Spark Knock |
| Occurs | Hot, Under Load, Intermittently |
Trouble Codes
| P0340 | Camshaft Position Sensor 'A' (TDC) Circuit Intermittent |
| P0341 | Camshaft Position Sensor (TDC) 'A' Circuit No Signal |
| P1345 | Mass Airflow Sensor Loose Contact With Low Frequency |
Message Closed w/FIX
Vehicle Data
1997 GMC C3500 Sierra SL
| VIN | 1GDKC34J4V |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire, Poor Fuel Economy, MIL Lamp on, Spark Knock |
| Occurs | Hot, Under Load, Intermittently |
Trouble Codes
| P0340 | Camshaft Position Sensor 'A' (TDC) Circuit Intermittent |
| P0341 | Camshaft Position Sensor (TDC) 'A' Circuit No Signal |
| P1345 | Mass Airflow Sensor Loose Contact With Low Frequency |
Video