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Unread 09-15-2001, 01:37 AM   #1
Nightclaw
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1994 YJ Wrangler 
 
Join Date: Jul 2001
Location: Oceanside, CA, USA
Posts: 150
Engine cuts out on highway

Okay, this is getting silly. On the way back from MIT tonight, I had a little episode that crops up every once in a while with my YJ. It's done this maybe six times in the 1 years I've owned it, but I was wondering if anyone else has had this happen, and what they problem/solution was.

I'll be cruising down the highway at a comfortable 70 MPH, straight and level. Suddenly, the engine will stop firing for 1-2 seconds, then pick back up like nothing ever happened. It has ONLY ever done this on the highway, and extremely rarely at that; has never ever happened on the trail or in town. Environmental conditions seem not to matter.

But being faced with an involuntary axle swap, I am now wondering if something else is wanting to crap out on me. Year model and mods in the sig.

I'm sure someone's going to want to suggest replacing normal wear components of the ignition. I've done that (plugs, wires, cap & rotor all <1 year old), and had the injectors cleaned.

Cheers!

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[b]'94 YJ Sahara Hardtop[/b]
4.0L / AX-15 / Stock NP231 / Stock D30 (open) / D60 (35-spline, Detroit locker, Moser axles) / rear disc brakes / 4.56 gears / Advanced Adapters SYE & CV Shaft / 33" BFG MT-KM's / Thorley Header / Magnaflow Muffler / BesTop Flares
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Unread 09-15-2001, 10:07 PM   #2
Razskidoo
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Join Date: Mar 2001
Location: Warren,Mi.,USA
Posts: 38
I have the same problem! The only thing I haven't change yet ,is the catalytic converter.
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Unread 09-16-2001, 10:57 PM   #3
Nightclaw
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1994 YJ Wrangler 
 
Join Date: Jul 2001
Location: Oceanside, CA, USA
Posts: 150
Well, I can safely say it's not the catalytic. I have a Random Tech cat w/ less than 10k miles on it. My YJ did this both before and after I installed the cat. So at least that one less thing you need to replace to troubleshoot, Razskidoo.
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[b]'94 YJ Sahara Hardtop[/b]
4.0L / AX-15 / Stock NP231 / Stock D30 (open) / D60 (35-spline, Detroit locker, Moser axles) / rear disc brakes / 4.56 gears / Advanced Adapters SYE & CV Shaft / 33" BFG MT-KM's / Thorley Header / Magnaflow Muffler / BesTop Flares
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Unread 09-17-2001, 10:03 PM   #4
MKB
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Join Date: Aug 2001
Location: Montana
Posts: 14
sounds like on of those 'shorts' that are hard to fine. set the parking brake, start it up, and start wiggling wires. You'll know when you find it.
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94 YJ 2.5, 5 spd
PerformanceAid Throttle Spacer
K&N w/ Turbo Tube
Swaybar Disco's
2.5" Spring Lift w/1.25" HD Shackle
1" Body Lift
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Unread 09-18-2001, 10:50 AM   #5
Nightclaw
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1994 YJ Wrangler 
 
Join Date: Jul 2001
Location: Oceanside, CA, USA
Posts: 150
Hey, not a bad idea! Since I won't be driving it anywhere for a while (Broken D35C), I'll have plenty of time to run the engine in the driveway and do exactly that.
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[b]'94 YJ Sahara Hardtop[/b]
4.0L / AX-15 / Stock NP231 / Stock D30 (open) / D60 (35-spline, Detroit locker, Moser axles) / rear disc brakes / 4.56 gears / Advanced Adapters SYE & CV Shaft / 33" BFG MT-KM's / Thorley Header / Magnaflow Muffler / BesTop Flares
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Unread 09-18-2001, 10:11 PM   #6
lostboy
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Join Date: May 2001
Location: NY
Posts: 533
well...the same thing happened to me out of the blue while i was 100 mies from base. lol ...now anyway...but it turned out to be the igniton control computer was bad intermittently..the problem would come and go ,until one day the engine started backfiring like anything and wouldn't start again...replaced that module ..it can be tested at the dealership....and haven't had any problem since ..also it increased mileage by about 3 mpg..and it gave no indication beforehand that anything was wrong
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Unread 09-18-2001, 11:15 PM   #7
Nightclaw
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1994 YJ Wrangler 
 
Join Date: Jul 2001
Location: Oceanside, CA, USA
Posts: 150
Well, there ya go - typical Chrysler electronics. I think the only way they could build an electronic device that didn't suck would be if they started building vacuum cleaners...

Any idea how much a new ICC runs, and can the module be tested off-vehicle? Thanks!
__________________
=========
[b]'94 YJ Sahara Hardtop[/b]
4.0L / AX-15 / Stock NP231 / Stock D30 (open) / D60 (35-spline, Detroit locker, Moser axles) / rear disc brakes / 4.56 gears / Advanced Adapters SYE & CV Shaft / 33" BFG MT-KM's / Thorley Header / Magnaflow Muffler / BesTop Flares
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