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1991 Ford Ranger Custom 2.3L MIL Lamp on, Tachometer inoper
This hi milage vehicle came in for a complete tune-up and cooling system service. The owner said the MIL would come on at times and at the same time the tach (not the engine rpm) would drop to between 0 and 500 rpm and stay there regardless of the engine speed...
FIX posted 12/18/1998
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Message Closed w/FIX
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Related Documents & Media 
| VIN | 1FTCR10A5M |
| Engine | 2.3 L / 4 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / PFI |
| Emissions | Fed |
| Symptoms | MIL Lamp on, Tachometer Inoper |
| Occurs | On Accel |
Trouble Codes
| 18 | No Tach input or spout circuit open |
Message Closed w/FIX
Vehicle Data
1991 Ford Ranger Custom
| VIN | 1FTCR10A5M |
| Engine | 2.3 L / 4 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / PFI |
| Emissions | Fed |
| Symptoms | MIL Lamp on, Tachometer Inoper |
| Occurs | On Accel |
Trouble Codes
| 18 | No Tach input or spout circuit open |
Video