Question about 1989 Ford F 150

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1989 Ford F150 Instrument Cluster Problem

My 89 F150 has a 5 spd manual OD tranny. Ammeter, Oil Pressure Gauge, and Temp gauge either are not working or working erracticly. Could anyone tell me exactly how to remove the whole cluster? I removed screws above and below but cannot seem to get it pulled out far enough to unhook wires & cables on back. Thank You billnrhea@juno.com

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  • Anonymous Mar 18, 2014

    I'm trying to remove my Instrument cluster panel, but am unable to get enough slack to reach the connectors and unplug them.

  • Anonymous Mar 23, 2014

    I have a 1978 bronco xlt. remove speed odometer cable from back of instrument cluster.

  • Anonymous Mar 23, 2014

    remove speed odometer cable from back of instrument cluster

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Some of the gauges are on the same fuse as the dome light; check the fuses. The other main source of gauge problems for this vintage F150 is the sending units and I don't use the term sending unit lightly, so when you go to the parts store make sure you say you are looking for sending units not sensors (sensors hook to the computer) sending units are of 2 types for this vintage F150, lights and guages you need the ones for gauges, the oil sending unit is about 4 dollars and the coolant temp sending unit for a guage is about the same.

I have 4 fords and you will come to understand that the wiring is a jury rig, all this come out when they are the age of your 1989 PU.


Posted on Oct 16, 2008

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Since you already know what your physical oil pressure is at idle I would try to get an accurate spec from Ford. if 10psi is normal the the problem is likely the switch or cluster.
If it is below spec it could be high mileage (normal bearing wear will lower idle pressure) a weak bypass spring in the pump, or a the wrong oil filter or oil.
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