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1986 Buick Somerset Limited 2.5L Temp Gauge
First noticed the gauge on the dash moving from norm to
overheat range while driving on freeway. Replaced sending
unit with no change in symptoms. Hooked up Snap On Scanner
found coolant temp sensor to ecu fluctuates the same as the
dash gage.
FIX posted 10/27/1998
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Message Closed w/FIX
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Related Documents & Media 
| VIN | 1G4NM27U4G |
| Engine | 2.5 L / 4 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI |
| Affected | Temp Gauge |
| Conditions | Erratic |
| Misc. | 4 Tech Engine |
Message Closed w/FIX
Vehicle Data
1986 Buick Somerset Limited
| VIN | 1G4NM27U4G |
| Engine | 2.5 L / 4 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI |
| Affected | Temp Gauge |
| Conditions | Erratic |
| Misc. | 4 Tech Engine |
Video