XJ is hiccuping and feels like misfiring - JeepForum.com

 
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post #1 of 7 Old 04-02-2013, 08:49 AM Thread Starter
jclawson01
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1996 XJ Cherokee 
 
Join Date: Sep 2011
Location: boise
Posts: 27
XJ is hiccuping and feels like misfiring

my cherokee is will randomly hiccup while driving (best description i could think of) it does this very random. Some days it kinda chugs along, but then other days it runs like a top. When I pulled off the highway last week as i slowed down it just died, it didn't lurch or make any sounds the RPMs just went down till it shut off. It fired back up and I drove it just fine.

Last week I took it to lunch stopped at Target and when I came back it wouldn't start. I could hear it turning the engine over but no sputters. I left it came back 4 hours later and it started up just fine.

The spark plugs, wires & cap were replaced about 10,000 miles ago

Any help on this would be great thanks

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post #2 of 7 Old 04-02-2013, 11:25 AM
Max78
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1992 XJ Cherokee 
 
Join Date: Jun 2009
Location: Tucson,AZ
Posts: 566
Have you checked fuel pressure, How many miles are on the Jeep? Injectors been cleaned or replaced at all?

I'm dealing with something similar right now, low idle, random sputtering, stalling when stopping. I'm thinking its electrical so I'm replacing cap, rotor, wires, and plugs. If it persists I will do injectors next as they look to be in piss poor condition. . .

92 Cherokee - All nude and in need of some tlc!
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post #3 of 7 Old 04-02-2013, 05:53 PM
tjwalker
It's the crank sensor!
 
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1999 XJ Cherokee 
 
Join Date: Nov 2007
Location: Central Minnesota
Posts: 8,750
Garage
It's possible that this could be the front end of a crankshaft position failure. Not classic symptoms of it, but I've seen them act this way.......

Do you know if this is the original crank sensor?

99 Cherokee, 4.0 AW4, NP242
Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche
Without "data", all you have is an opinion!
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post #4 of 7 Old 04-05-2013, 08:14 AM Thread Starter
jclawson01
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1996 XJ Cherokee 
 
Join Date: Sep 2011
Location: boise
Posts: 27
it has 333,000 miles, and I think most of the parts are still orig. I think it was towed behind a motor home for a good part of its life. How do I clean the injectors?
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post #5 of 7 Old 04-05-2013, 05:51 PM
Rusty Barrels
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1979 CJ7 
 
Join Date: Dec 2006
Location: KENT
Posts: 17
Change your fuel filter.
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post #6 of 7 Old 04-05-2013, 07:28 PM
Kalali
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2000 XJ Cherokee 
 
Join Date: Apr 2012
Location: Ocean
Posts: 643
So are you saying the odometer was accumulating the miles while being towed behind the motor home? How many miles on the engine?
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post #7 of 7 Old 04-08-2013, 02:37 PM Thread Starter
jclawson01
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1996 XJ Cherokee 
 
Join Date: Sep 2011
Location: boise
Posts: 27
I changed the fuel filter just over a year ago, and I don't know how many miles are on the engine
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