Question about 1987 Chevrolet R10
My fuel gauge is not reading properly
I don't have a diagram but I can tell you the pink wire going into the tank should be the sending unit for the gauge.
Posted on Jan 11, 2013
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Posted on Jan 02, 2017
SOURCE: 1999 Chevy Cavalier fuel gauge
This problem is caused by a defective fuel gage sending unit, the sending unit is located inside the fuel tank and is part of the fuel pump module but is sold separately in a kit from ACDelco, to replace the fuel gage sending unit requires the fuel tank be removed from the car. Below is a price and part number courtesy of rockauto.com
ACDELCO Part # SK1189
SENSOR KIT, FUEL LEVEL PRICE: $102.89
Posted on Dec 22, 2010
I personally have 1988 GMC truck and had to replace the fuel pump. I found all the info including wiring diagram in a haynes repair manual. These can be purchased in most automotive parts stores. Something I found interesting is that the fuel pump's operation works through the oil pressure switch, located by the distributor screwed into the engine block. If this switch is stuck or sticking it will affect the fuel pump. Replaced a good fuel pump for nothing! The truck had sit up for awhile and the ground wire connections had to be cleaned as well.
Posted on Sep 17, 2009
Youre gauge is controlled by a plunger in the fuel tank which is attached to the sensor and the fuel gauge. it sounds like when the plunger goes down half way its either getting stuck down lower then it should. Needs replacing. Any mechanic can do this install for you.
Posted on Aug 27, 2009
Fairly common problem with GM vehicles. The sending unit in your tank has a small circuit board that an arm is attached to which moves up and down according to your fuel level. This circuit board and arm are not making good contact. Unfortunately the only good solution is to replace this part.
Posted on Oct 28, 2009
Testimonial: "thought probably that was it but better off replacing whole unit .i was for for gauge proplem thanks. "
Your tank sending unit is bad. Unfortunately, it is part of the fuel pump assembly, and the part costs around $400, give or take. plus installation labor. It is an all too common problem on GM vehicles, as I have had to change it on my last 2 GMs. If you do an internet search you will find plenty of others in the same boat!
Posted on Apr 23, 2010
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