Question about 1994 Jeep Grand Cherokee

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1994 jeep runs fine untill you turn it off it will crank over and doesnt start wait afew minutes and then it starts again could it be a fuel pump issue

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Fuel pump or crank shaft position sensor

Posted on Aug 24, 2010


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1 Answer

Where is the idle located on a 1994 Jeep Grand Cherokee limited

It sounds like you do have a relay problem try switching relays around that have the same part number start with the starter relay when switching the make sure the key is off each time

Sep 04, 2012 | 1994 Jeep Grand Cherokee

1 Answer

We have a 1994 grand Cherokee Jeep and it will shut off when you are driving. If we wait 15 or 20 min then start it again it will crank, What could be the problem.

Without the benefit of testing, the two most common causes are either the crank position sensor has failed or the fuel pump is failing. If you can't hear the pump humming in the tank when you first turn the key to run after the engine has stalled, good bet is the pump is bad.

Apr 21, 2011 | 1994 Jeep Grand Cherokee

1 Answer

My grand cherokee takes allot a time starting, I have to wait until the check engine light comes on. Sometimes this takes up to 10 minutes. Once the light comes on the the jeep fires right up. I am...

this could be several things. ours is in the shop now; the problem was the wiring harness to the fuel pump has an open circuit; and good luck figuring that one out-- not the best wiring design. but, if this is your problem, you should correct it quick, before the poor voltage going to the fuel pump burns up the pump motor-- list $$$$ on the pump is +/- $400. while you are trying to start the truck, you can hear the pump starting for two seconds, to pressurize the lines, then it stops until u crank the engine. have a helper crank it over while u stick your ear on the tank [ no im not kidding] and listen for the pump running. if u dont hear it, then the pump isnt getting power. check the relay, then check for continuity in the harness.

Aug 24, 2010 | 1994 Jeep Grand Cherokee

1 Answer

1994 grand cherokee gives me a hard time starting in the morning no feul in rail ill crank and crank then ill hear the pump turn on and shell start up no drive problems it drive fine only when i try to...

Fuel pump is bleeding back so it isn't holding pressure in the lines. So when it sits long enough it is hard to start. Try turning the key on and then off wait 15 secs or so and turn key on and then off again do this one more time and see if starts. If so then you will need to replace the fuel pump in the tank soon.

Nov 05, 2009 | 1994 Jeep Grand Cherokee

2 Answers

Runs for 20 seconds then dies

Check the fuel pump, make sure it is putting out proper pressure if not then change the fuel pump

May 28, 2009 | 1994 Jeep Grand Cherokee

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My cummins turbo diesel ran out fuel, now it wont start

You need to loosen three (1,3, and 5 are the easiest to get to) of the injector lines at the cylinder head with a 19 mm wrench. Have someone crank the motor until you see fuel come out. Immediately start to tighten the lines, while the motor is still cranking. The motor will start to catch as the lines get tightened. Let it run a few minutes to eliminate the rest of the air.
I've had to do this several times on my 99 Ram because of a messed up sending unit telling me I still had a half tank.
The mechanics at Mt. Clemens Dodge taught me this. Good Luck.

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1 Answer

Jeep runs for twenty minute and stall.

Hello now that I see this messages you making me to remember when this use to happen to me I was totally mad especially that I try everything even on my wedding Honey moon it was a disaster I took my truck to my Honey moon it was 12 hrs from home but it took me around 20 hrs once I get back home from my trip I decide to spend a full day trying to find out what was wrong with my truck I had a dodge ram 1500 1995 5.9 engine and the main problem was with the fuel pump it run fine for about 3 hrs and then it die and I had to wait around 20 minutes and then run another 2-3 hrs in low speed the higher the speed the less time it took to fail again how I found it was the pump well inside in the engine compartment there is a fuel line with a valve to check the fuel pump pressure I did run my truck hard until the fail occur then I install the pressure gauge try to turn the switch on and it was no pressure at the line problem solve the fuel pump was getting hot after couple of hrs running sometimes it only took about an hour to fail try this and see if you have the same problem it could be a different problem but it is good to know this

Apr 15, 2009 | 1994 Jeep Grand Cherokee

1 Answer

1994 Jeep Cherokee ignition problem

might check the crank sensor. it is located on the transmission bellhousing on top just off to the drivers side. if the pcm loses this signal the vehicle will die immediately and not restart until it sees the signal again

Jan 19, 2009 | 1994 Jeep Cherokee

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