ZOMBIE 4x4 BOARD > General :: General 4x4 Discussion :: > failed NOx jeep 2.5
failed NOx jeep 2.5 - Posted By WagBag (cldaslfe) on 25th Aug 08 at 12:01pm
failed NOx 1997 jeep wrangler 2.5L any ideas? Bad egr?
Re: failed NOx jeep 2.5 - Posted By Sillyneck (sillyneck) on 25th Aug 08 at 12:07pm
egr
egr solenoid
coolant temp sender (that's an often overlooked one)
Re: failed NOx jeep 2.5 - Posted By WagBag (cldaslfe) on 25th Aug 08 at 12:42pm
ok round 2 .. where the hell on this thing is the egr.. I cant seem to find it. 
Re: failed NOx jeep 2.5 - Posted By Donkey (norcalzukini) on 25th Aug 08 at 6:15pm
It may not have an EGR, Chrysler/Jeep is notorious for cat convertors shit'n out. A new ($90) cat will mask alot of problems if your in a crunch to get it smogged. Also, check for vacume leaks
Re: failed NOx jeep 2.5 - Posted By 2long4u (2long4u) on 4th Sep 08 at 5:35pm
^^x2
On chryslers the #1 reason for failed smog is a bad cat.
Re: failed NOx jeep 2.5 - Posted By WagBag (cldaslfe) on 4th Sep 08 at 6:19pm
You are correct no EGR. It does have a Aftermarket cat already but may need another? Also was told Decarbonizing works, the water down the intake and fuel system cleansing. I did the h2o down the intake (dripping 20oz bottle) And doing the fuel sytem cleaner.
Re: failed NOx jeep 2.5 - Posted By 2long4u (2long4u) on 4th Sep 08 at 9:34pm
A generic cat won't work. I've seen a brand new generic cat fail on a early 90's dakota. When we installed the OEM part it passed with flying colors.