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It's very possible. It's fairly simple to change them, and all for less than about $20...😉😎
Unfortunately, I don't usually get let off the hook with these simple repairs but a little optimism never hurts. I've got a post in purgatory right now but after it is reviewed, it should post. I got as detailed as I could and hopefully get some more recommendations. In almost 10 years, I've never experienced the wacky symptoms with this Trailhawk that i am experiencing now and I feel like I've had every common Trialhawk/Pentastar issue come across me at least twice now.
 
Unfortunately, I don't usually get let off the hook with these simple repairs but a little optimism never hurts. I've got a post in purgatory right now but after it is reviewed, it should post. I got as detailed as I could and hopefully get some more recommendations. In almost 10 years, I've never experienced the wacky symptoms with this Trailhawk that i am experiencing now and I feel like I've had every common Trialhawk/Pentastar issue come across me at least twice now.
It's also a good idea to check all the connections and grounds. Our battery terminals can be kinda wonky too, so make sure they're not stretched out, and good and tight...😉😎
 
Discussion starter · #43 ·
I wonder if this is the problem with my '15 Trailhawk 3.2. Couple days ago, engine light, as well as all the other lights for the fancy tech stuff came on. Getting two generic camshaft codes and trans control module codes thrown at the same time. Assuming electrical, started with new battery (it was time for a new one) and checked alternator. Still have the same problem. Took to local repair shop and they are also stumped (these guys have bailed me out so many times so surprised they are stumped). They are going to take another day to look into it. Maybe I'll mention this to them. i live in Midwest and have 109k miles so I'm sure my ground belt is in rough shape.
Hey @mchawk ,

Welcome to the Forum.

Any time there's codes for multiple, generally unrelated systems, it's almost always an electrical or computer network issue.

Do you know all the codes that are being thrown? If so, post them.
 
Discussion starter · #44 ·
Unfortunately, I don't usually get let off the hook with these simple repairs but a little optimism never hurts. I've got a post in purgatory right now but after it is reviewed, it should post. I got as detailed as I could and hopefully get some more recommendations. In almost 10 years, I've never experienced the wacky symptoms with this Trailhawk that i am experiencing now and I feel like I've had every common Trialhawk/Pentastar issue come across me at least twice now.
As they get older, things like grounds and wire-connector corrosion start showing up. Location-related issues also creep in (salted roads in the North vs. a Cherokee that's lived its life in, say, the desserts of the Southwest. One has rust & corrosion on wires and frame metal whereas the other has dry rot in hoses and brittle plastics.
 
It’s that time of year again. The weather is starting to get cold and if you live in the North where the roads are salted in the winter, it’s time to winterize your Cherokee so the unexpected doesn’t happen in the middle of February.

It’s well known the Cherokee has quite a few ground straps but one of the more critical ones is the strap leading down from the negative terminal on the battery to the frame and continuing on to the transmission casing. It's also in the unenviable position of being exposed to moisture sources and once corroded, can lead to all sorts of electrical anomalies.

My 2014 TH's ground strap was at its end of life so before winter set it, I decided to change it. Replacement is an easy DIY job. My total cost was $18 and took about 20 minutes and can be done with wheels on the ground. While replacing it is pretty straight-forward, here’s the process step-by-step.

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1. Ground straps are just braided metal so I ordered a generic off Amazon. The only important thing is that it’s at least the same length and thickness as the original. I chose the one below which was the perfect length and about 25% thicker than the original.


2. Here it is compared to my hand. This strap’s a beast, much thicker than the original strap. There’ll be no intermittent contact when this guy's in place.


3. Next step is to turn your wheels to full left. Everything can be done with wheels on the ground from the driver's side wheel well.



4. We’re going to peel back the front half of the wheel well liner. To do this remove the two plastic fasteners and the 10mm bolt on the inside face of the liner.

5. Then remove the three 8mm bolts on the front left edge of the liner. On the bottom (yellow arrow) there’s a metal pop rivet. On many cars this has already been pulled out from previous liner removals. If you still have it I’d recommend drilling it out or cutting a little of the fender liner plastic away from it etc. and removing it. You can use a plastic fastener (or even nothing) when reassembling. The liner does not need it to stay in place.





6. Peel the liner out of the way. You’ll now have clear access to the ground strap. Note it’s one long strap from the battery to the transmission with a solid connector frame lug in the middle. The upper half (green box) between the frame connector lug and the battery is covered with wire wrap and electrical tape and normally doesn’t corrode. The lower half (red box) is a different story. It’s exposed to road splash as well as any spillage from filling the windshield washer bottle and almost always be in some state of corrosion. This is the part we’ll replace.




7. Take off the nut at both the frame connector lug and the transmission and run the new ground cable. Once the new cable is in place, simply cut through the braided part of the old, corroded cable at the frame connector lug.

View attachment 227419

View attachment 227420

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8. As shown in this photo with the old grounding strap held up against the newly installed strap, the new cable is more durable and provides approximately a 25% larger grounding path. Finish up by putting the fender liner back on in reverse order. The new strap will probably last for the remaining life of the Jeep. Give yourself a pat on the back for a job well done (y)

View attachment 227422
If I'm removing the old strap, what am I cutting?
 
No idea. 8 yrs old, snow,slush ,salt...probably.
Now, that's a good "better safe, than sorry" investment in preventive maintenance...😉😁😎
 
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