Question about 1993 Jeep Grand Cherokee

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93 Jeep Grand Cherokee Won't start

Engine cranks, but no fire, pulled out a spark plug, no spark either, it run fine one day, went to start it up the next day, run for a few seconds then died, any suggestions, get tired. Thanks anyone

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  • The Dude 66 Jan 09, 2009

    Thanks thundergod, that was my first guess, put a new crank sensor in still nothing, ran perfect day before, im thinking maybe fuel filter clogged? not enough psi reaching fuel rail. i pulled out a spark plug, their is fuel on the plug, then thinking engine flooded so i put new plugs in, they needed replaced still nothing, the cap and rotor are new plus wires. do you know about the fuses in the glove box, what are they for? This one is a tuff one

  • wirejockey Jan 09, 2009

    1993 grand wagooneer v8, same thing. It just started happening after a fill up, so I went straight to the fuel filter first.
    If I go out in the morning..it starts and runs for about 30 sec to a minute. Then it wont restart. The next day..same thing, you hear the pump run when you turn the ignition on, for just a second..prime I guess. The subsequent start tries you dont hear the pump and it wont start.
    Im thinking anti theft system foul up, might go jump out the fuel pump relay and or auto shutdown relay. Its a tricky one.

  • The Dude 66 Jan 09, 2009

    I am getting spark, i pulled one out grounded it, turned over the engine and i see spark, i also pulled the fuel hose off the fuel rail, and fuel squirted out. I keep everthing tip top on the Jeep, so their were no warning signs. I did that on board test, but i have no way of what they mean. Im thinking its some sensor, Map, TPS.? Thermostat sensor , thanks for helping, i will get to the bottom of this one, its a challenge.

  • Anonymous Jan 14, 2009

    i have been having the same issue. is the the fuel pump electrical or manual in the 1993 jeep grand  cherokee laredo

  • Anonymous Jan 16, 2009

    my 93 grand cherokee will not start in the morning and starts in the afternoon ???

  • mukorob Jan 17, 2009


    Manfred in Namibia
    Driving this 1993 model with 1j4fn78sxpl615975 with 4.0 engine. Problem started with it just dying under throttle. Shifting the gear between park and drive several times normally helped. Now it helps no more. Its not starting. Fuel pressue okay, coil firing, no spark on the spark plugs. I am tired. what can the problem be?

  • Anonymous Apr 07, 2009

    I CHANGED CRANKSHAFT SENSOR,STLL WONT START.I HAVE NO SPARK,HAVE FUEL IN RAILI THINK ITS THE SECURITY ALARM BUT DONT KNOW HOW TO DISARM.IF SOMEONE HAS ANSWER WOULD LIKE TO DISARM SECURITY PERMANENTLY THANK YOU

  • gurvinder_s Apr 08, 2009

    im having a problem with this jeep...i cant get it to start everything seems fine to me..im getting spark i changed the distributor cap and the rotor and checked to see if there is fuel going through which there is but still cant seem to figure it out..i even changed the crankshaft sensor i tryed doing the on board test but i dont know what the number mean so can someone please help me out or tell me what i should be looking at thAnks ...its a 1993 jeep grand cherokee

  • gurvinder_s Apr 08, 2009

    im having a problem with this jeep...i cant get it to start everything seems fine to me..im getting spark i changed the distributor cap and the rotor and checked to see if there is fuel going through which there is but still cant seem to figure it out..i even changed the crankshaft sensor i tryed doing the on board test but i dont know what the number mean so can someone please help me out or tell me what i should be looking at thanks.....its a 1993 jeep grand cherokee

  • Anonymous Apr 17, 2009

    My Jeep was running fine and then I went to start it up in the afternoon and nothing. It only was clicking, which had bad starter so I replaced the starter. Now it rolls over strond and starts but stalls immediately. I checked fuses, fuel pump is fine,changed fuel filter, what can I do now?

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Are you getting spark from coil wire when cranking? If so, check the cap & rotor. If not, the most common failure is the crank sensor. If you have a 4,0, you can find it on the drivers side of the bellhousing, in line with the flywheel, just where it's annoying to work on. There is a test you can make, but I don't have the specific test values or the correct terminals to check. (you can find that info in any half decent manual.
Good luck

Posted on Jan 08, 2009

  • Richard Scordino Jan 09, 2009

    It definitely wont hurt to change the fuel filter. (probably the most neglected part of many vehicles) But, fuel related problems generally come with previous performance problems before everything comes to a stop. I have never seen a fuel problem give you no spark.I assume that you checked the coil input voltage? (should have 12v going in)
    I have a really bad ignition diagram for that year... It seems to show an ignition module seperate from the ecm, located near the coil. If you have one, it should be checked. (I don't remember any specific test procedure for that...might be a "pass/fail" thing. I have a 95 and the diagram shows one on my system but I don't have one) so, don't drive yourself crazy looking for it if you cant find it. But check on the fender as well before you give up.
    You should also check the pickup inside the distributor. "don't remember test for that either but generally it should have continuity
    There is an "on - board test where you turn the key on and off three times, leaving it on the last time. codes will flash on the check engine light. Each flash group is a number: two flashes quickly followed by one = 21 etc.. This is a really basic system, but it may help to point you in the right direction. Also: fuses, wherever they can be found, should be tested as well!


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Hi All

I did the following in the meantime. Fitted a new distributor cab and rotor. I opened up the timing cover and check the steady tensioner (it is not spring loaded). The timing marks indicate it did not jump a tooth. The timing chain is still healthy.

I fit new spark plugs and took out the fuel pump. Low fuel pressure. I started it up with a universal fuel pump that push 2.8 bar. It is to low though. The black abrated stuff out of the fuel pump might indicate that the fuel pump failed. It seems one only need to take it slow with this model. Scratch slowly and you get ontop of the problem.

The map sensor tested and found working okay.

Posted on Apr 11, 2009

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Change the pickup coil in the distributor,then start the vehical .

Posted on Feb 21, 2009

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Just cycle the key on, off, on ,off, then leave on. engine light will start flashing a couple of times after a few seconds. count them. will be once every second then a space then will start again. this will be the first 2 digit code. if all ok will flash 55 to indicate its done

Posted on Jan 13, 2009

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Ok gang, this worked for me! I was at whits end and remembered what an instructor at radar school...circa 1977 told us. "when you have tried everything logical and nothing will work, give it a good whack!" I got under the fuel tank and slugged it a couple times, shes been running for a day now:) I now know if it does **** out its the fuel pump or a stuck switch in it!

GIVE THE FUEL TANK A GOOD THUMP A COUPLE TIMES RIGHT UNDER THE FUEL PUMP

Posted on Jan 11, 2009

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Replace crank sensor electro-magnet that create sparks to the coil, some car get worn-out espicially when the vihicle is more than ten years.

Posted on Apr 07, 2009

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You've probably fixed this by now, but if not, why not check the ignition coil? I've had ignition coils in my '94 Grand Cherokee go bad on me twice (160,000 miles on odometer). It cranked over strong (i.e., fully charged battery and new starter) but would not fire. There was fuel at the fuel rail but no spark at the plugs. Confirmed 12 volts at the ignition coil input. Pulled the ignition coil and checked the resistance. The primary winding was 1 ohm (within spec) but the secondary was 9.7 kohms (out of spec, the spec is 10kohms to 14kohms, approx.). I put in a new coil and it fired right up.

Posted on Mar 28, 2009

  • jeepache Mar 28, 2009

    On second read of the problem, it appears that my ignition coil solution does not apply to the problem. The initial problem statement indicated there was no spark, but the update comment states there was spark afterall. So, nevermind, my bad.

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