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1991 Ford F-250 Custom 7.5L Poor Idle Quality
Cylinders 4 and 7 run poorly with a lower temperature on the exhaust manifold than the others yet the O2 sensor shows rich at Idle. There is spark on thes cyl. The vacuum guage shows shaking between 16 and 19. Propane on engine showe no rpm change. Plugged pcv...
FIX posted 9/21/2001
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Related Documents & Media | VIN | 2FTHF26G1M |
| Engine | 7.5 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / efi |
| Emissions | US Fed |
| Symptoms | Poor Idle Quality |
| Occurs | Always |
Message Closed w/FIX
Vehicle Data
1991 Ford F-250 Custom
| VIN | 2FTHF26G1M |
| Engine | 7.5 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / efi |
| Emissions | US Fed |
| Symptoms | Poor Idle Quality |
| Occurs | Always |
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