Question about 1990 Jeep Wagoneer Limited

1 Answer

I have a 1990 Jeeep Grand Wagoneer that has a fuel an engine temp

I have a 1990 Jeeep Grand Wagoneer that has a fuel gauge and engine temp problem. The fuel gauge will go up when the jeep starts but I have driven it awhile and it hasn't dropped from the full mark. My emgine temp stays under 100'F on the gauge and wont go over a hundred even tho its hotter than one hundred. NEED HELP!!!!!!!!!!!

Posted by on

  • Richard Scordino May 11, 2010

    Could be a bad dash ground, but I'm leaning towards that you have two separate issues. Check to see if there is a thermostat installed and working...if so, change the sending unit. Fuel gauge could be a number of things, likely the sending unit (part of pump assembly) may be stuck or damaged.



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 96 Answers

Sending unit for the fuel gauge is not grounding correctly or is bad. Temp sensor needs to be replaced.

Posted on May 12, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

86 grand wagoneer with 360 runs fine until engine gets to normal temp then dies

You'll need to figure out if you are loosing fuel or spark to proceed. it could be a relay or several other components.

Jan 30, 2014 | 1989 Jeep Grand Wagoneer

1 Answer

Is their any one else out their that can tell me anything else about a 1990 Jeep grand Wagoneer, are the good to have are bad to keep. hope its all good.

I've had my 1990 Wagoneer since 2007, it was an old "City Park Vehicle" so it was kept in good condition until I bought it. I ran the poor thing practically into the ground and it still runs great!

Jul 09, 2009 | 1990 Jeep Wagoneer Limited

1 Answer

1990 Jeep grand Wagoneer i ran out of gas,when i put gas in in the jeep the truck try to start but start draging then just did nothing,i try to jump it and steel nothing but just a clicking sound

by running out any debris in your tank will get sucked into your fuel pump. REplacing the fuel pump usually means removing the tank. You can try replacing the fuel filter first its much easier and cheaper. The filter is attached to your fuel line between the tank and the engine, usually in the frame. TAkes about 15 minutes to replace.

Jul 08, 2009 | 1990 Jeep Wagoneer Limited

1 Answer

I have a 1990 Jeep grand Wagoneer can you please tell me were to find it on my car

The starter is going to be at the back of the engine, near where it connects to the tranny, no matter wht engine you have. It must be in a possition to engage the fly wheel to start the car. But know what engine would be helpful in narrowing it down.

Jul 08, 2009 | 1990 Jeep Wagoneer Limited

1 Answer

I have 1990 grand wagoneer that drags when trying to start

If your battery is fully charged and all connections (both + and -) are clean and secure, put a volt meter across the battery and crank the engine. If volts drop below 9.5, replace the starter.

Jul 08, 2009 | 1990 Jeep Wagoneer Limited

1 Answer

I have a 1990 Jeep Grand Wagoneer that run hot when the truck is park are not moving so please

first check thermostat. when jeep is cold take out thermostat and see if you can move any parts . It might be frozen , if its good, then your fan is not providing enough cooling through the radiator to cool engine. if the fan is working properly, then your radiator fins are clogged and u need a through flushing.

Jul 08, 2009 | 1990 Jeep Wagoneer Limited

1 Answer

How to check if fuel sending unit is bad on a 1990 jeep grand wagoneer and where the sending unit is at

the sending unit is no more than a variable resistor, u test it with an Ohm meter, the reading should move from either high to low ohms or low to high ohms, your gauge will most likely read empty if the sender is defective, while a GM car will read full. The sending unit is located in the fuel tank.

May 12, 2009 | 1990 Jeep Wagoneer Limited

1 Answer

I cannot engage the four wheel drive in a 1990 jeep grand wagoneer

Try putting it in to 4 wheel drive then put it in reverse then put it back in drive.

Apr 17, 2009 | 1990 Jeep Wagoneer Limited

1 Answer


The ground has corroded off the sending unit.You can access this by drilling out the rivits in the access panel under rear seat on drivers side.

Sep 30, 2008 | 1988 Jeep Grand Wagoneer

Not finding what you are looking for?
1990 Jeep Wagoneer Limited Logo

Related Topics:

238 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts


Level 3 Expert

80668 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides