Dashboard Lights and Gauges
Ford Ranger
Ford Ranger XLT
Chevy Trailblazer

How do you fix a fuel gauge on a 1990 Ranger pickup?


Top Answer
User Avatar
Wiki User
2005-11-12 16:43:06
2005-11-12 16:43:06

Fuel gauge problems seem to be a common occurance in the Ranger series. My research indicates that the problem stems from one of three main causes: 1. A bad gauge itself - Possible, but usually not the problem 2. A bad sending unit - Most common cause. 3. A faulty ICVR - The ICVR (Instrument Cluster Voltage Regulator) Located on the back of the instrument cluster and limits the current to the gauges. If it fails, the fuel, temp, and oil gauges will not read correctly, if at all. 4. Wiring problems. If only the fuel gauge reads incorrectly, I would suspect either #1, #2 or #4. However, if other gauges are affected, think #3, but don't rule out wiring problems. Methods of testing the gauge are outlined in most of the aftermarket repair manuals, and it's usually easier to remove the bed to replace/repair a tank unit than to drop the fuel tank. Because the ICVR is a dealer special order part, and runs in the $85 range, I would exhaust all other possibilities before replacing this part. HTH, John


Related Questions

what's the pis of the 1990 v6 isuzu pickup fuel pump

where is the fuel filter located on a 1990 ford ranger 2.3 L engine

A 1990 Jeep Cherokee malfunctioning fuel gauge can be caused by a broken ground wire. The gauge will not function if the fuel float in the fuel tank is broken.

According to my Chilton repair manual , fuse # 16 is a 15 amp fuse for the fuel gauge on a 1994 Ford Ranger

The ranger has a fuel sending unit inside the gas tank. These are notorious for going out. Only way to change it is to drain and drop the gas tank or remove the bed. The sending units that I have been looking at cost about $100

The Ranger fuel gauge could have several problems causing it not to work. These problems include, blown fuse, bad wiring, loose connections, or a bad fuel sending unit in the fuel tank.

Inside the fuel tank combined with the fuel gauge sending unit

The fuel pressure for a 1990 D 21 pickup is dependent upon the size of the engine. In general, the fuel pressure should be approximately 20 pounds per square inch.

Attach a fuel pressure gauge to the service port on the fuel rail.

Try to see if there is a common ground wire to these 2 gauges. If there is make sure it is grounded to a clean dry grounding site and see if this helps.

The fuel gauge could be getting improper signals from the fuel sensor. The sensor is located inside of the fuel tank.

My 1969 Chevy pickup has it in the fuel tank behind the seat

Under the vehicle, behind the driver.

The fuel level sending unit in the tank is probably at fault.

Inside the fuel tank. The fuel tank must be removed to gain access.

It could be the fuse, but mine is because the floater that measures for the gauge is stuck.

It is in the fuel tank attached to the fuel pump. Remove the fuel tank , replace the unit and reinstall.

Your check gauge light comes on if : your coolant temperature guage shows the temperature is high your oil pressure gauge shows the oil pressure is low or your fuel gauge shows the fuel tank is near empty

The float in the fuel tank may need to be replaced.

In most cases it is the sending unit in the fuel tank at fault.

Copyright ยฉ 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.