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Old 12-16-2009, 11:42 PM   #1
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USS Never Start - but it wants to...and so do I

87 - 6cly, 4L - bought it off a guy who said " just the timing is off" - me and a friend tried to fix that, we fixed it - but still no luck - took it in and the ECU needed to be replaced - bu with that - it backfired out the exhaust... i guess pretty loud. The mechanic said he checked the timing and it was all good , he suggested the timing chain skipped a tooth and recommended a buddies garage to check it out - ..not interested ...yet... ( not sure what thats all about really .. i know its not good)

so i just got back from hawaii ( i live in Guam ) and i bought a New ignition coil, plugs, wires, cap and rotor ( wrong rotor though )

and still no start -

she will crank and crank and cranks - and almost start a few times a couple blub blub bulbs... but all in all - no start - - no backfire anymore though

also - I turn the key off, all the way back , and it still tries to start - until i disconnect the battery...

does this have something to do with the key being broken off inside of the ignition ( i need needle nose to start it haha )

really upset i bought a no running jeep - you live and learn -

thanks for all the help guys - i know you will help me out here....always have


reply here or e-mail

anklenawer@gmail.com

thanks again

!!!

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Old 12-17-2009, 12:39 AM   #2
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Had the same problem turned out to be the ignition control module, you can have it tested at autozone, you should also look into the nutter bypass and team rush ignition upgrade, recently did it to mine and felt a big improvement.

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Old 12-19-2009, 08:51 PM   #3
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replaced

replaced the ICM... the old one was pretty shot - i didn't have it tested but it wasn't looking so hot -

replaced it - tried to start - same thing but then...

i think the battery was going bad - it was barley cranking - then i heard a noise from inside the glovebox ( ECU ) or maybe a relay just beind the glovebox

if its the ECU, i just had it replaced 2 weeks ago - and in that case - the attempts of starting is causing it to fry -( and 200 bones) - if not - it could be i'm out of juice - ( didn't have a fluke) - so...

any help out there would help - replaced ECU, ICU and Ignition coil so far plus plugs/wires... did not check the timing yet, as i am not that inclined with knowledge of the jeeps ..yet.

please help because i'm about to lose money throwing this off a cliff

---thanks

kyle
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Old 12-19-2009, 10:27 PM   #4
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look up the nutter bypass on here, its not very dificult to do, and it bypasses the computer.To check if your timing is close just put the motor on top dead center and take off the distributor cap to see if the rotor is pointing to the #1 terminal, should start if its close.
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Old 12-19-2009, 11:25 PM   #5
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Dude. Thanks a bunch man. Quick reply and advice. It's Sunday here in Guam so I am gonna study tonight and work on it tomorrow. I'll look up the bypass. Thanks again
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Old 12-20-2009, 12:12 PM   #6
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There could be several thing that are basic you can check. fuel and spark and timing . to check spark, take the coil wire off the dist. cap hold it close to something metal on the engine to catch a ground but don't touch the metal. 1/2" away, have someone turn the engine over ( don't have your hand to close to the end of coil wire you might end up being the ground ) If you get spark then its possibly a fuel problem. You can check to see if your pump is working by having someone turn the key on and have someone listen to hear if the pump comes on in the fuel tank. If it does you need around 36 to 38 psi on your fuel pressure if you have access to pressure gage this helps. On your fuel rail you should see a vavle. Looks simular to vavle stem on your tire with a Black cap hook your gage up, crank the engine and see what your pressure is. If its not ok, it could be the pump is wore out or the pressure regulator which is located at the front of the fuel rail it will be round and have a small vacuum line on it. But first you want to check the pump pressure at the pump. The fuel filter is on the driver side in front of the rear axle on the frame rail. take the bracket off covering the fuel filter, take the line off the rear of the filter hook the gage up. Have someone turn the key on and see what your pressure is should be around 42 psi if below 36 psi it won't run and you need a new pump. If its good and your pressure at the rail wasn't good it could be the filters pluged or the regulator bad. you can take the filter off and try to blow thru it. You should be able to blow thru it fairly easily, if not replace it. If its good then your regulators bad and thats easy to replace. this should eliminate buying to many parts that you dont need.
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Old 12-21-2009, 05:49 PM   #7
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check it

dude, thanks a bunch - i never got a chance to work on it - i will thursday - andi will check the fuel pressure - i never thought of that -

thanks man - keep an eye on the thread - i am going to post results for anyone else -

thanks agin.

kyle
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Old 12-29-2009, 02:16 AM   #8
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alright - we got it running - basically the timing was off - and it was just hard to find...

but now, since we got it running - it will idle fine - filled up the low tire, and took it for a spin - as i accelerate... its hessitant and often seems like it wants to stall - and while going into 3rd gear, it did - a lot - and it was hard as hell to start - going uphill ( wher ei live) stalled so much i had to just slip the clutch and rev it up to get home... getting very mad at this jeep - want to sell it and get a new one... or buy a geo metro. anything guys

all in all

- while load/acceleration - sputters..backfires and quits
- uphill - damn near impossible

any help would be appreciated

thanks

kyle
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Old 12-29-2009, 10:24 AM   #9
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sounds like a fuel pump does it seem to just run right pout of power then chances are its a fuel pump or the pos carter carb is acting up or plugged up
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Old 12-29-2009, 07:20 PM   #10
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thanks - i hope its not the fuel pump... but - is there any way i can do some checks so i'm not buying all the parts.. any chance maybe the fuel filter - or maybe tweak the carb like ya see on TV ( joking )

thanks for the help - any more takers?
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Old 12-29-2009, 10:56 PM   #11
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it runs fine - it call idle all day - so i think the timing is right - it only has trouble starting after i hammer on it to go faster , in which case i get a lot of popping, and quits.

i did notice i hear a hissing from the carb when i give it juice .. not sure if that plays a role at all but - i am looking at 02 upstream, fuel filter ( check pressure as well) and TPS - not sure how much they cost - but from what i have read- it seems to be pointing that way - any checks or test i can do before hand -

thanks a lot guys

kyle
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Old 02-03-2010, 09:06 PM   #12
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Where is this located?

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