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Old 11-12-2007, 05:52 PM   #1
Join Date: Aug 2006
Posts: 52
jeep just stopped!!!!

Its a 91 Jeep. 4 banger. OK I was driving and the Jeep just stopped running. I costed to the side of the road and turned it off, turned the key and the engine started turning (battery, starter etc all fine), but the engine would not fire. I tried again and again, it would turn over, but not fire. What should I check? I'm not sure what to even start looking at.

Thanks for your help.

91 YJ, Black, 5 speed, 2.5L, recreation vehicle, do you wave at the 4 door wrangler, or not?
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Old 11-12-2007, 06:02 PM   #2
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Silly to ask? ... Does it have gas?

99 XJ Sport
3" Skyjacker lift
31 x 10.50 General Grabbers Are all fishermen liars, or do only liars fish?
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Old 11-12-2007, 06:05 PM   #3
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Yes it has gas...and however I have run out of gas before and it seems to choke a little then die...this was more like someone just turned off the key. I thought a fuel pump...I changed the filter 6-8 months ago so I ruled that out...what do you think.
91 YJ, Black, 5 speed, 2.5L, recreation vehicle, do you wave at the 4 door wrangler, or not?
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Old 11-12-2007, 06:06 PM   #4
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could be a bad gas gauge and shes empty. it does kind of sound like something just shut off. it could be the fuel pump

92 yj, 4.0 with 240,000 miles, 3 inch mystery lift(was on when i bought it), 1.5 inch shackle lift, 35/12.50 Super Swamper Thornbirds, Ford 8.8 rear, square tubing custom front drive line, disc brakes all around, 3.55 gears fron and rear,

Shiny side up, Greasy side down
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Old 11-13-2007, 12:29 PM   #5
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Happened to me before and It ended up being no spark from the distributer
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Old 11-13-2007, 02:15 PM   #6
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Originally Posted by 1BusyBoy View Post
Happened to me before and It ended up being no spark from the distributer
I would second that. Could be a failed coil, failed electronics, bad wire to or from the coil and distributor.
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Old 11-13-2007, 06:27 PM   #7
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'03 TJ Sport on 33's, 2"BB, 1"BL, 1"MML
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Old 11-19-2007, 09:26 PM   #8
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Same exact thing happened to mine, After I towed it home I replaced the Coil, Distributor cap & Rotor, Checked ECM (Fine), Checked Ignition (Fine) Replaced Crankshaft Positioning sensor, Replaced In-tank fuel Pump, Fuel Filter, Checked Injector. about 200 dollars later I decided to check my distributor drive gear for the hell of it. Pulled it out and the gear was completely stripped. Checked my camshaft gear and it was fine. got a distributor drive gear off of a 4.2 Liter (you can also get them off of any YJ years 87-95 they used the same part the whole time in every single engine. haha.) So after all that I slap in the gear that I paid $2 for at the junkyard and it fired right up. I think it was stripped because the distributor shaft also drives the oil pump and I was running too thick of an oil for the cold temperatures where I live.
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Old 11-19-2007, 09:28 PM   #9
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Sounds like it needs round headlights.
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Old 11-19-2007, 10:10 PM   #10
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Originally Posted by orange05tj View Post
Sounds like it needs round headlights.
Might as well just turn it in for a JK at that rate
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Old 11-20-2007, 11:34 PM   #11
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Did u check to make sure u getting fuel pressure? Not that u actually have gas in the tank. I had a bad wire on my jeep and it fried 3 computers in 3 minutes of running; put a new harness in shes great. Just Check for fuel pressure then spark. If u have neither the magic 8-ball points to ECU.
I still dont understand......

88 YJ 4banger

Currently Building a Chevy 350 for superfun when i get outta college and can afford to actually put the motor in...
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Old 11-21-2007, 09:25 AM   #12
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it needs needs needs spark..find out which one it's not getting..
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Old 11-21-2007, 11:16 AM   #13
coilovers are damn flexy
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Same thing happened on my F-350, a couple of weeks ago. It turned out to be the computor that tells the injectors when to fire. I know this is a completely different engine, but the way you described the problem, it is identical to what happened to me. If it was a fuel related problem, you would have sputtered out, and not just died. I am sure that your problem is electrical, in nature. Have your ECU checked at auto zone, as that is probably the best place to start. QuadsquirrelYJ has good info. Check the same way he did.
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Old 11-23-2007, 11:37 AM   #14
Join Date: Nov 2007
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Same thing happened to my jeep a few weeks back. I did a full tuneup from front to back on my jeep and come to find out, my computer burnt up...

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