Sep 21, 2015, 03:49 PM
Last edit by: IB Advertising
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XJ Ask the Question Thread
Newbie
Joined: Jul 2014
Posts: 4
Likes: 0
Model: Cherokee
OK - thanks to this picture I was able to find the drip hose, pull it off and clean it and also clean the path through the firewall. The hose on my XJ was slightly different. It was the same size, but it dropped along side of the frame.
I will report back on whether this resolved the issue. Thanks!
I will report back on whether this resolved the issue. Thanks!
https://www.flickr.com/photos/heybak...n/photostream/
CF Veteran
Joined: Jul 2010
Posts: 4,930
Likes: 3
From: 802
Year: 99
Model: Cherokee
Engine: 4.0
Ok, so after replacing that broke dizzy cap it fired right up and ran smooth. Till it started running rough and threw the CEL for the upstream o2. It does this often, but everything is new- ECM, o2, TPS, IAC.. When I got the headers in they had to extend the o2 wires. Maybe an issue there. I unplugged the o2 and nothing happened, no CEL. What gives?..
Beach Bum
Joined: Jul 2011
Posts: 6,123
Likes: 22
From: Cape Hatteras, North Carolina
Year: 2000 WJ
Model: Grand Cherokee
Engine: 4.0
The nose usually knows. Soak some up on a paper towel, fluid will show it's true color. Sniff for confirmation.
Senior Member
Joined: May 2012
Posts: 651
Likes: 0
From: Fayetteville, NC
Year: 1996
Model: Cherokee
Engine: 4.0
what is this broken piece?
It sits right under the expansion valve on the firewall. It comes from the cab side of the firewall to the engine side. Appears to be black plastic. 
Don't mind the water drops I was spraying off the engine
Don't mind the water drops I was spraying off the engine
Last edited by crabmushrooms5; Jul 10, 2014 at 04:01 PM.
CF Veteran
Joined: Jul 2010
Posts: 4,930
Likes: 3
From: 802
Year: 99
Model: Cherokee
Engine: 4.0
WTF?! Now I'm getting a IAC code along with both o2 sensors reading the circuits are high.. Idles ok now, was rough, haven't gotten up to speed to see if it's still stuttering under top gear acceleration. I've refreshed grounds, I've replaced everything. Unplugging upstream o2 still makes no difference in idle. I need your input and advice guys, I'm getting super frustrated with this thing..
The bank 1 sensor 2 code is pending, the other two are stored codes. Thanks fellas.
The bank 1 sensor 2 code is pending, the other two are stored codes. Thanks fellas.
