Edmunds.com | Inside Line | Auto Observer Your Account | Help | Directory
You are here:
![[F]](http://a332.g.akamai.net/f/332/936/12h/www.edmunds.com/media/townhall/webxicons/site.gif){kind=small}
Forums
SUVs Jeep Cherokee and Jeep Grand Cherokee Jeep Grand Cherokee Start Stall Idle Problems
590 messages, Last post on Nov 26, 2009 at 4:03 PM
You are in the Jeep Cherokee and Jeep Grand Cherokee Forum. Your Hosts are steve_ & tidester
|
Replying to: wolfblum (Nov 16, 2006 7:40 pm) Connectors get oxidized & throw off the ECU sensor voltages. Cleaning them with contact cleaner (non-solvent base!) & putting a little dielectric grease in them can often work wonders. Sometimes a ground jumper wire around a bad connector is enough to fix a particular issue - depends on the circuit affected. For the Jeeps made since AMC got out of the game - ground cables are known issues. Just expect it to cause problems one day so go ahead now and spend less than $5 to replace the braided factory one from the engine to the firewall with a generic battery ground cable w/ eye terminals on each end. While I focus on Jeep XJ's with the older RENIX based engines, I'll gladly help anyone I can or at least point you in the correct direction for help. You can contact me in this thread or on my email form at my website: Another Freakin' Jeep Cherokee Website |
|
|
Replying to: the_skeptic (Jan 24, 2007 7:33 pm)
|
|
|
Replying to: melina3 (Feb 06, 2007 5:06 pm) There is also a electrical feed plug on the firewall than can, on occassion, give problems. It's low on the list of suspects but the vast majority of electrical connections to the interior run though it. If you have a straight drive - make sure there hasn't been any leakage of fluid from the clutch master cylinder down the inside beneath your dash onto the fuse panel, or any electrical connectors. It's nothing more than brake fluid and eats up many plastics & paint.
|
|
|
Replying to: lunghd (Feb 06, 2007 5:12 pm) thanks so much!
|
|
Yes, please post back! It's a cheap fix of a common item that causes a LOT of wierd behavior on these vehicles. Should cost under $5.00 at AutoZone etc... It will eliminate that engine ground strap as a potential cause & we can go from there.
|
|
|
Replying to: lunghd (Feb 07, 2007 9:29 am)
|
|
|
Replying to: melina3 (Feb 07, 2007 9:42 am) Look on the firewall near the engine on the driver-side. There should be a flat, braided steel cable bolted there that runs from that point over to the rear of the engine's head. If that's gone then you should see the bolt hole there, perhaps with the bolt still there. (Metric size, I think.) You can just run the new cable from that point and bolt it to the back of the engine or head. (Not on the manifold or valve cover bolts - those are not good ground points either.) I think I have a schematic on my site of the engine bay. Let me check & I'll repost.
|
|
|
Replying to: lunghd (Feb 07, 2007 12:47 pm) |
|
|
Yes, I have the schematic. Wasn't posted on my site but I'm editing the files right now. My XJ isn't here or I would just shoot a photo & post it for ya... I'll do that as an edit for the article I'm getting ready to post to my site in a few days but the schematic should help you find it. On older 4.0L's the ground cable wasn't braided - it was just part of the engine harness but went to the same locations. Sorry, I thought you had a newer XJ (the forum format here isn't the greatest & I simply didn't pick up on it.) Just to double check - post your model, year & engine size... but here's what to look for on a 4.0L engine: Look on your engine's dipstick tube. (Holds the dipstick that you use to check oil.) It's bolted to the passenger side of the block. The bolt that holds it in place to the block should have a wire grounded to it. THAT is the engine end where the OEM harness connection on my 1990 XJ goes to the block. Make sure your new cable is long enough to go from there to the firewall bolt. To begin: Engine end: You can bolt your new cable to the dipstick tube bolt, or any other available bolt - but for simplicity - let's assume you choose that one. Just remove the nut, pull off the existing ground wire, scuff up the area a bit with a wire brush if you'd like, install one end of your new cable there, reinstall the OEM ground wire, replace the nut & tighten. (Don't overdo it but get it tight.) Firewall end: Standing in front of your Jeep, facing the windshield... Look for a bolt on the firewall, about 8" to the right of center and near the upper side of the firewall. It should be a black wire with a metal connector on the end being held down by a bolt. Once you see it, just remove that bolt. The OEM ground wire will likely come off with it - no problem. Just remove the OEM ground wire and SCUFF THE WIRE's CONNECTION METAL with a wire brush or sandpaper. Install your new ground cable beneath the OEM ground wire and reinstall the bolt. I'll have those diagrams up in a few minutes for you and post the URL here. |
|
I'll try to post pics to this same page in a few days. Here's a link to the ground strap diagrams.
|
|
You are here:
Forums
SUVs Jeep Cherokee and Jeep Grand Cherokee Jeep Grand Cherokee Start Stall Idle Problems
New? Join Now!
Forum Tools
Search Forums
Browse by Vehicle
2011 Jeep Grand Cherokee
Browse by Board
Browse by Topic
Today's Chats
