Question about 1985 Jeep CJ7

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Just bought 1985 JEEP CJ7 and fuel gauge does not work. Previous owner said he pulled gas tank because Jeep had been sitting a few years where should i start?

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At your tank he probably didn't hook the wire back up

Posted on Sep 10, 2010

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Hi, this seams to be the sender unit on the side of the tank: bad earth. not connected or dirty connection gerry

Posted on Sep 10, 2010

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1 Answer

Hard to start and when it does it won't stay on for long time


Use a bottle of yellow HEET dry gas / fuel dryer to remove moisture in your fuel tank.

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Sound like either fuel or ignition. Have you replaced any fuel filters? I would check the condition of the distributor cap and wires as well. Moisture could be a factor.

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Need to know what wires go where on my 78 cj7 fuel and temp gauge?


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Sep 06, 2009 | 1985 Jeep CJ7

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I have a 1997 JGC V6 lately I noticed that the gauges don't work when the key is in the run position and the jeep wont start. If it sits for a while then I turn the key the gauges come on and the jeep...


Are you the only driver for this vehicle?
Next time when you refill up,DO NOT TOP OFF THE GAS.
When the gas pump stop,just let it stop. DO NOT TRY to put more into the take.
When topping off,the fuel sensing float is push BEYOND it limit. It will create a short on the wiring to the gauage.
Please ran few tank WITHOUT TOPPING off and see does the flow return to normal and not creating a short.
The fuel pump and gas level sensor is in the same unit. It's costly to pull the gas tank down and replace it.

Aug 26, 2009 | 1996 Jeep Grand Cherokee

2 Answers

I have a 1985 jeep cj7 and it will idle just fine


If you haven't had any luck yet, I suggest that you #1 replace any rubber fuel lines that are obviously bad or even questionable. CJ's had mechanical fuel pumps mounted on the side of the crank case which ran off the cam. This means that there is no pump in the tank and any fuel lines leading to that pump will be under a vacuum. If those rubber lines are wrong kind, old or almost kinked they WILL colapse under the vacuum and temporarily shut the fuel off. #2 However, in your case it sounds like the little screen filter on the pull tube inside the tank is probably stopped up completely with debre, that's why the motor dies and won't start again. If you drop the tank and remove the screen sock from the end of the metal tube that may solve one problem. If you do this though, I suggest that you put an inline filter somewhere before the pump.

Jul 22, 2009 | 1985 Jeep CJ7

2 Answers

My jeep will not start all of a sudden. When gas


Check the fuel filter, and i would suggest replaceing the fuel in the tank. It only takes about a month for gas to start to deterioate and if it sat that ling there is probally some junk in the tank. witch probally caused the fuel filter to plug up.

Jul 21, 2009 | 1985 Jeep CJ7

3 Answers

1991 Jeep Fuel Control Issue


Hey Mudkicker,

Who ever thought of putting an electric fuel pump inside a tank of gas........

Check your other gauges for accuracy. They do that when a ground is loose.

Check the wiring from the fuel tank along the longitudinal frame for frays and shorts. Plugs are secured.

Under the hood, passenger side, check the fuel pump relay. Switch it with one of the others to test it.

Bring the vehicle to an auto parts store. Ask them to break out he code reader. Check for diag codes

Comment me back
Mike.

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1 Answer

Problems starting my Jeep CJ7


well first off check for spark then air then fuel that is what cause your car to start...

Jul 10, 2009 | 1985 Jeep CJ7

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