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1992 Jeep cherokee not starting

by REB57 / November 27, 2007 9:37 PM PST

92 cherokee wont start, inline 6, 4.0, had trouble a few times, was getting no fuel, then eventually would start, months later, repeat, would finally start,now, wont start, no fuel pressure, had fuel pump out, was working, put it back in, it started up, tried few hours later and wouldnt start again, thinking maybe a weak pump, I installed a new one, did not check to make sure it worked even though it is new, but I am assuming it is good and still something else. So far I have changed, the pump, the filter,fuel regulator, fuel relay, and the crankshaft sensor. Have not yet changed the cam sensor, but that is next, what am I missing here? Is there a fuel shutoff somewhere? Would a bad map sensor keep it from starting?

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Still a no go
by REB57 / November 29, 2007 10:08 AM PST

well I changed the cam sensor and still a no go. I did check the fuel pump and it is working when jumped, and got fuel to the rail, but I have no juice going back to the pump when trying to start it. What is left, the control box? If I take it off and take it in, can it be checked and reprogramed if necessary, or does it have to stay in the vehicle?

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re: still no go
by Poisonapp1e / December 1, 2007 3:44 AM PST
In reply to: Still a no go

I had a similar problem with my 96 Grand Cherokee. Same four liter, six cylinder engine. It would simply stop running randomly, but infrequently. Then it would just not start. After some time, from a minute or two, up to several minutes, it would turn but not fire. My mechanic diagnosed it as the "crankshaft position sensor". Replaced that and have never had a problem since. Hope that solves it.

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Got It Finally
by REB57 / December 1, 2007 5:54 AM PST
In reply to: re: still no go

Well finally got it, the only 2 things I hadnt done was the ballast on the fender, which I was told this could be the problem, but I did by pass it and it made no difference and I was going to go take it in and have it checked at the shop, but the mechanic said could take couple hours at least and really from what I had told him that the only thing left was the control module or computer, well it started right up. He did tell me as well that under the distributer cap and rotor, is the "pick up" plate, he said that can and does go bad as well and will shut everything down. He also mentioned that the distributers themself's have a tendency to break on the inline 6's. Mopar wanted $440 for the module, O'reillys, $160, so I am back on the road just in time for the wintery roads.

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Question about fuel pump
by dwrb11 / December 18, 2008 7:00 AM PST
In reply to: Got It Finally

I have the same have the same jeep and am having the same symptoms you had. i have done the same things other than change the computer. I was putting that off till last becuase of the money.

I was just wondering though if before you changed the computer you could still hear the fuel pump turning on? Because i can hear mine turning on still.

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by saltysarge / September 5, 2009 8:28 AM PDT
In reply to: Got It Finally

where is the ballest on the fender I changed the coil,wires,plugs and other things and mine still wont start and can't getthe ignition module out unless I take the distributor out so I would like to try the ballest first

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1992 jeep cherokee
by saltysarge / September 24, 2009 9:00 AM PDT
In reply to: Ballast

Will a vaccum leak cause this vehicle to not spark I have changed the whole distributor wires plugs crankshaft sensor what next?

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Ballest Resistor
by unkron / August 26, 2010 5:45 AM PDT
In reply to: Ballast

The parts supplyer I use told me on a 92 on the ballast resistor on the fender is for the ABS brake system ....

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