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1989 Chevrolet R2500 Suburban Scottsdale 7.4L Poor Idle Quality
No [...] problem is when you put this truck in drive the IAC goes from 40 to 133 counts and the idle goes up from750 rpm to 1000 in drive and then put it in park it stays the same.I checked timing set to [...] with single wire (TAN & Black str.)[...] is 12...
FIX posted 6/21/1999
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Message Closed w/FIX
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| VIN | 1GNGR26N8K |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / Throttle body |
| Emissions | obd1 usfed. |
| Symptoms | Poor Idle Quality |
| Occurs | Under Load |
| Misc. | 2Wdr |
Message Closed w/FIX
Vehicle Data
1989 Chevrolet R2500 Suburban Scottsdale
| VIN | 1GNGR26N8K |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / Throttle body |
| Emissions | obd1 usfed. |
| Symptoms | Poor Idle Quality |
| Occurs | Under Load |
| Misc. | 2Wdr |
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