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So, here is the run down after 341,816 miles on the original motor I developed a really bad lifter tick, so I figured since I gotta get a new cam, and lifters I would go with Comp Cams 68-301-5 cam along with new timing chain, lifters, push rods, and rockers. I also went with edelbrock's aluminum 4.0 head and a new distributor, because the old one had a ton of play in it. Got it back together and the cam broken in, but then I got a P0204 code put a noid light on it and it's firing. I pulled the plug and it had spark I also checked compression which was 175ish hot. So I moved the number 4 injector to the number 3 spot and vice-versa. I still have a horrible idle like it has a miss but after 30 minutes of idling it hasn't thrown a new code and it's running rich. Any ideas on where to look next?
Unplug one or both of your front o2 sensors depending on what year and model you have...goes into a preprogram fuel curve. It will throw a code but see if it smoothes out
Unplug one or both of your front o2 sensors depending on what year and model you have...goes into a preprogram fuel curve. It will throw a code but see if it smoothes out
Join Date: Feb 2011
Location: Blunt, South Dakota
Posts: 14,437 Likes: 61
Received 728 Likes on 503 Posts
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
Default ATTENTION ALL USER: Please read before posting!!!To all users of CF:
PLEASE, before posting technical questions, take some time to help others out, by adding details in the user control panel. There's 2 ways to do this. First, in the upper left corner on the front page of the site, is a menu button labeled UserCP.
After you click on that you'll see this menu:
Please take the time to click on the highlighted sections and fill out the vehicle information for your vehicle. The signature link is also helpful for any additional information like mods done, links to your build or other vehicles owned.
This helps EVERYONE out by informing them immediately about your year, make, model, etc.
These details are necessary for responders to accurately answer your questions without guessing or having to ask what are the specifics of the vehicle you are referring to. You can add these details easily and permanently by creating a signature or adding your truck details to your existing signature.
5 minutes of your time doing this now will save a ton of time and effort later.
Horrible idle
