Calgary Jeep Association

4x4 Related Groups => Tech Talk => Topic started by: becker468 on May 06, 2008, 10:08:14 PM

Title: 4.2 l with gm 4.3 tbi problems
Post by: becker468 on May 06, 2008, 10:08:14 PM

I bought a 90 YJ with 4.3 fuel injection put on it, when it is hot it won't start inless you pull one injector wire off, also when you floor it it will bog, any ideas, it doesn't have a pressure shutoff on the fuel pump,maybe this is a problem, I don't know, can anyone help

Title: Re: 4.2 l with gm 4.3 tbi problems
Post by: Bnine on May 07, 2008, 02:52:31 PM

I would call Howell and talk to them about tuning. You might have the wrong chip in there.

If not, they will walk you through trouble shooting process as well.

Ask them for a copy of their trouble shooting manual for future reference.

They've been helpfull with me in the past trouble shooting issues with their 4.3 system.

hth

Title: Re: 4.2 l with gm 4.3 tbi problems
Post by: becker468 on May 10, 2008, 09:39:10 PM

Thanks for the reply but it isn't from howell it is actually from a bone yard out of a Chevy, does it matter

Title: Re: 4.2 l with gm 4.3 tbi problems
Post by: Mudpig97 on May 11, 2008, 11:50:31 AM

Check for a bad temp sensor.

Title: Re: 4.2 l with gm 4.3 tbi problems
Post by: becker468 on May 21, 2008, 02:09:45 PM

Changed that already,thanks