Engine light on for evap leak - JeepForum.com
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Cherokee & Comanche Forums > XJ Cherokee Non-Technical Forum > Engine light on for evap leak

FS: Jeep Fog Light LED Bulbs! Several Brightness Options! Nitro Gear Packages Now Available at Rockridge 4wdGear Packages Available! Your # 1 Diff Shop is ROCKRIDGE 4

Unread 07-01-2013, 03:58 PM   #1
Registered User
1997 ZJ 
Join Date: Jun 2008
Location: Las Vegas
Posts: 2,827
Hey guys I'm normally on the zj side of things but my dads xj has been having a constant issue with the engine light being on.

First it's a 01 xj with the 4.0 and about 133,000mi. For the last 5 yrs when the registration comes up there would be an error code for an evap leak. First time it was a the gas cap and a few broken tees. This year the same code came up . They took it in for a smoke test and was told it was the evap pump. So they replaced it and still had the same code pop up. They took it to the mechanic and they were told that it was either the CPU or that the cat was bad.

Anyone have any other suggestions? They've basically rebuilt the whole evap system.

ksturgio is offline   Reply With Quote
Unread 07-01-2013, 04:22 PM   #2
Real Jeeps have dents.
CJ7-Tim's Avatar
2000 XJ Cherokee 
Join Date: Apr 2002
Location: out in the garage - Minneapolis, Minnesota
Posts: 21,657
What Check Engine Light trouble codes were downloaded ? The Evap System is fairly basic, and competent mechanic, or persistent Jeep owner should be able to find the failed or hose or fitting.

Incompetent, Ignorant, or lazy mechanics always blame the CPU for problems they can't, or won't diagnose. I suggest you find a more skilled and resourceful mechanic. CPU failure is very highly unlikely, and an Evap issues certainly would not cause the CPU to fail.

Between 2009 when Obama took office, and 2013, median annual household incomes have fallen by more than $2,100.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ......

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
CJ7-Tim is offline   Reply With Quote

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.