
1992 GMC Typhoon 4.3L Poor Idle Quality
When engine is at operating temp, it idles rough. Ignition looks good on the scope. While monitoring with a modus, map sensor doesn't look right so I add vacuum with a hand pump, and smooths out fairly well when I supply the sensor with 10 inHg. With key on en...
FIX posted 2/27/2015
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Message Closed w/FIX
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VIN | 1GDCT18Z8N |
Engine | 4.3 L / 6 cyl / GAS |
Trans | 4-speed Automatic |
Delivery | Fuel Injection |
Symptoms | Poor Idle Quality |
Occurs | Always, Hot, Idle |
Message Closed w/FIX
Vehicle Data
1992 GMC Typhoon
VIN | 1GDCT18Z8N |
Engine | 4.3 L / 6 cyl / GAS |
Trans | 4-speed Automatic |
Delivery | Fuel Injection |
Symptoms | Poor Idle Quality |
Occurs | Always, Hot, Idle |