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03-27-2010, 08:09 AM
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#1
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Registered User
Join Date: Oct 2009
Location: Fall River MA.
Posts: 213
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Wanting to stall right after start
I Have a 96xj and lately it has been haveing a hard time starting it will keep clicking to try to start but dearly does but if it does start it stalls out right away but if I pump the gas as I'm trying to start it will start but I have to keep reving it to keep it goin but after about a min or less of reving it I'll stop reving and it's fine it doesn't stall while I'm driving and after I sart it this way it won't do this again for about a week this started happening after I put a k&n air filter in would that have any thing to do with this please help
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96 xj 3.5 rustys lift, 33x10.50x15 BFG MT, t case skid plate, front tow hooks, open front and rear diff, NP-242 T-Case 1 in drop, AW4 transmission, dana 30HP, chyrsler 8.25 stock gears, K&N drop in air filter, flowmaster 40 series, poweraid throtle body spacer
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03-27-2010, 10:12 AM
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#2
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It's the crank sensor!
Join Date: Nov 2007
Location: Central Minnesota, MN
Posts: 7,975
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What you describe sounds like it very possibly is a marginal battery. Stalling and having to feather the throttle are classic symptoms of not enough voltage to keep the engine management system happy. As the engine runs for a while and the alternator charges it up a bit, it finally develops enough voltage to keep the engine mgmt. system supplied with juice and you are no longer symptomatic.
Start with having your battery LOAD TESTED. (also be sure battery cables/posts are shiny clean)
Load testing is the ONLY conclusive way of determining battery condition. Many parts stores will do this for you for free in the hopes of selling you a new one if you need it.
There are other possibilities but my money is on the battery and it must be eliminated first as a possible root cause.
Good luck and let us know what you find!
__________________
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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03-27-2010, 12:15 PM
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#3
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Registered User
Join Date: Oct 2009
Location: Fall River MA.
Posts: 213
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I alrady had the battery and alternator tested there both good and the battery is pushing 120 more cold cranking amps then it's rated for
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96 xj 3.5 rustys lift, 33x10.50x15 BFG MT, t case skid plate, front tow hooks, open front and rear diff, NP-242 T-Case 1 in drop, AW4 transmission, dana 30HP, chyrsler 8.25 stock gears, K&N drop in air filter, flowmaster 40 series, poweraid throtle body spacer
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12-01-2010, 03:32 PM
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#4
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Web Wheeler
Join Date: Mar 2009
Location: Boulder, Colorado
Posts: 1,599
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having this same issue, and the battery is good, bump for some more ideas.
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"When i die, bury me with my jeep. Its never been in a hole it can't get out of" Black Jeep Society My JEEP helped win a War > Your Honda mows my grass!! Mechanical Engineers Build weapons Civil Engineers build targets
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12-01-2010, 03:55 PM
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#5
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It's the crank sensor!
Join Date: Nov 2007
Location: Central Minnesota, MN
Posts: 7,975
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With the battery checking out, test the THROTTLE POSITION 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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Wanting to stall right after start
