ZJ AX15 conversion. Dies when coming to stop

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Mar 19, 2011 | 07:29 PM

Littlethunder92

Thread Starter

Seasoned Member

Joined: Oct 2010

Posts: 379

Likes: 2

From: Jersey

Year: 1994

Model: Cherokee

Engine: 4.0

ZJ AX15 conversion. Dies when coming to stop

Converted 97 zj 4.0 to ax 15 manual with 231.

Bypassed NSS. Running stock ecu. Runs great except for the fact when you are slowing up to a stop the jeep with shut off. It idles etc perfect. Any ideas? Do i need a 5speed ecu ?

Mar 19, 2011 | 11:31 PM

Bustedback

CF Veteran

Joined: Feb 2010

Posts: 12,367

Likes: 23

From: Oroville, CA

Year: 1995

Model: Grand Cherokee

Engine: 4.0 with all of the noise and clatter

I would think you need the correct PCM. Will it stay running if you keep your foot on the gas?

Mar 20, 2011 | 07:18 AM

Littlethunder92

Thread Starter

Seasoned Member

Joined: Oct 2010

Posts: 379

Likes: 2

From: Jersey

Year: 1994

Model: Cherokee

Engine: 4.0

If i blip the throttle before coming to a stop it will be ok

Mar 20, 2011 | 12:01 PM

Bustedback

CF Veteran

Joined: Feb 2010

Posts: 12,367

Likes: 23

From: Oroville, CA

Year: 1995

Model: Grand Cherokee

Engine: 4.0 with all of the noise and clatter

That sounds like the idle air control motor is acting up.

Mar 24, 2011 | 12:00 AM

JeepCherokeeBoy99

Newbie

Joined: Nov 2009

Posts: 4

Likes: 0

Model: Cherokee

Start with the basics. Verify your battery is in good shape and that your alternator is charging your system. I had the same problem and it was a weak battery. Also, check your grounds as well as your connections to the TPS, CPS, etc.