Calgary Jeep Association

4x4 Related Groups => Tech Talk => Topic started by: scott slade on September 04, 2016, 10:44:53 AM

Title: 05 LJ 4.0 Won't rev past 2100
Post by: scott slade on September 04, 2016, 10:44:53 AM

05 LJ 4.0,  six speed. Engine light came on at start and would not rev over 2100 rpm.  Idle is fine, can't get engine over 2100 in gear or neutral.   Any thoughts.? 

Title: Re: 05 LJ 4.0 Won't rev past 2100
Post by: JENSSEN on September 05, 2016, 09:30:07 AM

Have you run the CEL codes?

Title: Re: 05 LJ 4.0 Won't rev past 2100
Post by: scott slade on September 05, 2016, 10:26:02 PM

Haven't checked any codes yet. Thankfully I have work... will check it out Wednesday. 

Title: Re: 05 LJ 4.0 Won't rev past 2100
Post by: scott slade on September 06, 2016, 09:01:52 PM

So the check engine light went away and the engine runs fine now. Turns out it was the inline quadrajet input connector hooked to the rear seat fabricater diode.  Typical Jeep exhaust set up malfunction.  All good now.  Seriously no idea what the heck it was... would be cool to find out. 

Title: Re: 05 LJ 4.0 Won't rev past 2100
Post by: JENSSEN on September 11, 2016, 09:00:38 PM

bring it by, you shold still have soft codes