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Search: Posts Made By: Mattyjm
Jeep Forums: WJ Grand Cherokee Forum   07-23-2021, 11:41 AM
Replies: 13
Views: 1,273
Posted By Mattyjm
When you're having problems with a partially...

When you're having problems with a partially running and stalling engine, but not getting codes from a scanner, I wonder if your PCM is responding at all?
Jeep Forums: WJ Grand Cherokee Forum   07-23-2021, 11:36 AM
Replies: 9
Views: 669
Posted By Mattyjm
Also, if your shop installed a cheaper...

Also, if your shop installed a cheaper aftermarket crank sensor, that could be your issue. We all recommend using only MOPAR sensors for our engines, but, I have used a BWD factory OEM from...
Jeep Forums: WJ Grand Cherokee Forum   07-23-2021, 11:22 AM
Replies: 5
Views: 511
Posted By Mattyjm
There could possibly be air in your cooling...

There could possibly be air in your cooling system. Try topping off the radiator with coolant while the engine is running from a cold start up. Then, fill your reservoir tank to the fill line. Let...
Jeep Forums: WJ Grand Cherokee Forum   07-19-2021, 09:29 PM
Replies: 19
Views: 5,827
Posted By Mattyjm
Just get parts from another WJ that you need to...

Just get parts from another WJ that you need to put on your WJ. Then, you'll know the right parts are on your WJ. Any T-case yolk from a WJ will fit any other WJ. WJs don't have a 241J transfer case....
Jeep Forums: WJ Grand Cherokee Forum   07-01-2021, 03:31 PM
Replies: 8
Views: 781
Posted By Mattyjm
My 2002 WJ 4.0L i6 would occasionally and...

My 2002 WJ 4.0L i6 would occasionally and randomly pop that vac line off of the manifold. I never understood why it would do that. I'd just notice it when my MCC wouldn't behave. I wish I could tell...
Jeep Forums: WJ Grand Cherokee Forum   06-29-2021, 11:54 AM
Replies: 5
Views: 729
Posted By Mattyjm
There's no adjustment to the rear wheel...

There's no adjustment to the rear wheel alignment, so that's not your problem. Maybe your rear differential fluid level is low or the fluid itself is shot out.
Jeep Forums: WJ Grand Cherokee Forum   06-29-2021, 11:51 AM
Replies: 8
Views: 781
Posted By Mattyjm
Look at the driver side intake manifold. You'll...

Look at the driver side intake manifold. You'll probably see a bare nipple where the vac line popped off from the manifold. That'l;l fix both problems. If it's not there, then follow the vac line...
Jeep Forums: WJ Grand Cherokee Forum   06-16-2021, 03:08 PM
Replies: 15
Views: 1,559
Posted By Mattyjm
This almost sounds like you have a vapor locking...

This almost sounds like you have a vapor locking problem, but I thought EFI took care of that kind of stuff years ago????
Jeep Forums: WJ Grand Cherokee Forum   06-08-2021, 03:41 PM
Replies: 31
Views: 2,648
Posted By Mattyjm
I believe your PCM is at fault.

I believe your PCM is at fault.
Jeep Forums: WJ Grand Cherokee Forum   06-03-2021, 08:04 AM
Replies: 7
Views: 711
Posted By Mattyjm
When the engine shuts off, does the computer show...

When the engine shuts off, does the computer show a Check Engine Light on the dashboard gauge cluster?
Jeep Forums: WJ Grand Cherokee Forum   06-03-2021, 07:57 AM
Replies: 30
Views: 3,033
Posted By Mattyjm
Everything has gone up due to rising fuel costs...

Everything has gone up due to rising fuel costs and this current administration. I'm not surprised to see tire prices following the trend.

Having said that, I usually look for tires between...
Jeep Forums: WJ Grand Cherokee Forum   06-01-2021, 07:32 PM
Replies: 7
Views: 711
Posted By Mattyjm
A great place to start is by filling in your Jeep...

A great place to start is by filling in your Jeep information in your profile so that we know what year your WJ is as well as what engine and powertrain we're trying to diagnose. Or, you can also...
Jeep Forums: WJ Grand Cherokee Forum   06-01-2021, 07:24 PM
Replies: 4
Views: 646
Posted By Mattyjm
Try starting it in Neutral.

Try starting it in Neutral.
Jeep Forums: WJ Grand Cherokee Forum   05-24-2021, 10:06 AM
Replies: 11
Views: 757
Posted By Mattyjm
Check your fuse for those sensors in the Power...

Check your fuse for those sensors in the Power Distribution Center. I don't know much when it comes to the 4.7, but I do know that checking that fuse is critical first step.

Also, I used to...
Jeep Forums: WJ Grand Cherokee Forum   05-20-2021, 12:32 PM
Replies: 9
Views: 1,093
Posted By Mattyjm
We all know where that damage is located. Most of...

We all know where that damage is located. Most of us send it to the bone yard at this point. I've had one rot away at a rear control arm mount and sent it to the graveyard. Having to do it over...
Jeep Forums: WJ Grand Cherokee Forum   05-12-2021, 11:10 AM
Replies: 8
Views: 554
Posted By Mattyjm
Bilsteins. Contact Kolak for the best pricing.

Bilsteins. Contact Kolak for the best pricing.
Jeep Forums: WJ Grand Cherokee Forum   05-04-2021, 03:46 PM
Replies: 3
Views: 531
Posted By Mattyjm
Looking for kayak racks for my WJ.

What are you guys using for roof mounted kayak racks? I'd like a rack that mounts to my WJ roof rails. Any pics or advice or help or part numbers are welcome.

Thank you in advance!
Jeep Forums: WJ Grand Cherokee Forum   04-30-2021, 10:00 AM
Replies: 12
Views: 1,069
Posted By Mattyjm
I have to agree with the previous post. It's most...

I have to agree with the previous post. It's most likely the upper A-Arm ball joint. If you get the rear end of the Jeep rocking east to west by standing on one side of the body and pushing, you'll...
Jeep Forums: WJ Grand Cherokee Forum   04-27-2021, 08:38 AM
Replies: 16
Views: 2,197
Posted By Mattyjm
You mean that's leaking oil under my 4.0L? Oh. I...

You mean that's leaking oil under my 4.0L? Oh. I thought it was Jeep engineering an automatic undercoating feature....:laugh::rofl::laugh:

It is my understanding, after owning four WJs, all with...
Jeep Forums: WJ Grand Cherokee Forum   04-22-2021, 10:22 AM
Replies: 52
Views: 8,442
Posted By Mattyjm
As I was reading through your original post, my...

As I was reading through your original post, my first thought was "PCM is shot". Then, I read all the other posts in your thread and now I'm convinced that your PCM is on the fritz. Look at all those...
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