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No idle

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collin430
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Vehicle Year: 1993
Vehicle Make: JEEP
Vehicle Model: CHEROKEE

No idle

Postby collin430 » February 3rd, 2017, 8:43 am

Hope one of you can help me out here. I have a 1993 Jeep cherokee backed by an aw4 with an np231 tcase. I recently rebuilt a new 4.0 with a bigger cam (comp cam 68-232-4), bored 30 over, polished crank, mopar performance springs, and a 3 angle valve job. For the last couple of days we have been trying to get it running and we have come a long way but are still not quite there. To start the jeep you have to hold the throttle open a little bit then it runs fine.. but as soon as you let go of the throttle it dies, its like it wont idle for some reason. We have shaved the ears off the distributor so we can spin it to advance/retard timing witch is why we are as close as we are now. you can hold the throttle open just a little to get it to stay at about 800 rpms witch I would think is a normal idle but as soon as you let it go any lower it does. Not sure what else to do at this point, any ideas???? thanks for any help/suggestions. :banghead:

also has new:
plug wires
crank sensor
coil
distributor cap/rotor

jsawduste
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Stroker Displacement: 4.9
Location: Michigan

Re: No idle

Postby jsawduste » February 3rd, 2017, 9:00 am

IAC

collin430
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Posts: 13
Joined: August 21st, 2016, 2:05 pm
Vehicle Year: 1993
Vehicle Make: JEEP
Vehicle Model: CHEROKEE

Re: No idle

Postby collin430 » February 3rd, 2017, 9:20 am

jsawduste wrote:IAC

We got it now so it starts and idles most of the time but when it does it just farts and pops. Then when you rev it up it pops through the exhaust and intake

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SkylinesSuck
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Stroker Displacement: 4.6L
Vehicle Year: 1998
Vehicle Make: Jeep
Vehicle Model: Wrangler
Location: Northern VA

Re: No idle

Postby SkylinesSuck » February 3rd, 2017, 8:17 pm

Timing

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SilverXJ
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Stroker Displacement: 4.6L
Vehicle Year: 2000
Vehicle Make: Jeep
Vehicle Model: Cherokee
Location: Radford, Va
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Re: No idle

Postby SilverXJ » February 3rd, 2017, 9:00 pm

Timing/distributor indexing.

jsawduste
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Location: Michigan

Re: No idle

Postby jsawduste » February 3rd, 2017, 9:03 pm

lifter preload


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