Question about 1992 Nissan Pickup
When the vehicle is first started (cold engine - 6 cyl) both fuel and temperature guages move to extreme right far side. After driving approximately 10-15 miles the guages adjust back to the proper readings.
Have your alternator output checked; the voltage regulator might be failing.
You can check it easily across the battery terminals.
You shouldn't have any more than ~ 14.3 volts at any revs., and about 12.6 with the engine off.
If it checks out OK, the next step would be to access any plugs to the instrument panel, pull the connectors apart and then replug them.
You may have a flaky ground under the dash too.
Posted on Jun 30, 2008
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The Engine and Automatic Transmission (not applicable to manual transmissions) in this vehicles drive train are fully electronically controlled by a computer called the PCM and TCM (Power Train Control Module, Transmission Control Module). When a problem like this or other drive-ability related problems occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM. Also always check fuel pressure for correct spec for your make and engine type.
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