Question about 1989 Ford F 150

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1989 ford f150 temp.gauge not working - 1989 Ford F 150

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: Ford F150 1989

if hydraulic, maybe slave cylinder, or air in line bleeds like brakes

Posted on Aug 06, 2008

  • 3 Answers

SOURCE: 1989 Ford F150 Instrument Cluster Problem

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

tducksoup1
  • 7 Answers

SOURCE: 96 ford contour, temp gauge not working

first and foremost check the fuse box. there is a fuse for guages. The temp sensor is somewhere on the manifold and it will have a hard wire with probably a spring around it for protections that runs from the engine to the instrument cluster. You can remove the temp sensor and use a heat gun or propain heat and see if you get any kind of response. I suspect if all your other gauges are working the fuse is good. Most temp sensors do not use power only for lighting of the gauge, It just sends a resistance change to the water temp bulb and it moves the gauge. Is it a seperate gauge or in your insturment cluster? could be simple as a crushed line or the sensor went bad. It is normally self contained. I suspect it is a gauge and not a dummy light? if you can not get the one working in the instrument cluster I suggest going to and autoparts store and replace it which is very easy to do. You can remove the old sensor from the block and reinstall the new on in its place and run the cable back through where the first one was and mount the gauge in another area, It is very important to know the water temp since most computers use this info for setting the correct fuel to air mixture in a closed loop system. That is a diffrent sensor but you need to know the temp yourself to keep from blowing a head gasket or worse which can cause you lots of money to repair, I prefer to mount my own gauge seperate from the cluster, best of luck

Posted on Jan 02, 2009

michigan man
  • 3533 Answers

SOURCE: 1989 Ford F150 power window

you have to disconnect the negative side of the battery so you won't kill it then remove the door panel look for hidden screws behind the arm rest and behind what looks like little doors that you have to use a screw driver to open once that is removed you will find a plastic sheet just cut and peel this back (you can use duct tape to replace it when you are done) also put on gloves because inside the doors there is sharp edges, you then can see the motor and you will need to break off the rivets but you can put the new one on with just a small bolt and nut and use lock tight

Posted on Jan 06, 2009

fknstart
  • 404 Answers

SOURCE: speedometer, rpm gauges not working

sounds like a fuse

Posted on Jun 13, 2009

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1 Answer

Heater will not blow hot air, on 1990. Ford F150 5.0


Check the temp. gauge...........is the engine reaching running temp.?
Is the radiator full? The overflow tank at proper level?
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don-ohio (:^)

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Is it the gauge or sending unit on my 1989 Ford F150 when the temperature gauge reads cold?


Try an aftermarket gauge and see if it still works. If it does not work then it's definitely your sending unit.

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Go to fuse panel left of steering column. Ck to see if #17, 10A fuse, is blown.

Nov 08, 2012 | 1989 Ford F 150

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Jul 04, 2012 | 1989 Ford F 150

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Spark knocks going up hills also temp gage not working


What do u mean by spark knock? Missfire? Temp gauge not working could be a few things, sender fault, no water, gauge fault or wiring. Check u have water in it. Then find the sender and earth it out, gauge should go all the way up, if it does replace the temp sender, if not it's gauge or wiring. Let me know about the spark knock.. Not sure what u mean

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1 Answer

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Temp sounds like the temp sensor bad and the speedometer on the trans might be going. Is the check engine light on?

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1 Answer

1989 Ford F150 Instrument Cluster Problem


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.


Jun 26, 2008 | 1989 Ford F 150

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