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Yeah it is truly bewildering to me. I felt like I was losing my mind after putting three new gaskets and two new exhaust headers on it. I am not sure what you mean by checking the cam. I looked down into the hole where each lifter sits and looked at the cam to make sure it wasn't grooved or...

Hi everybody, I am overdue for an update to this thread. About two weeks ago, I was forced to play my hand and rebuild the top end of the motor. The noise had become excessive and I was concerned it was going to leave me stranded. This rebuild included new lifters, pushrods, rocker arms...

Just wanted to throw my $0.02 in here. I'm a basically stock XJ running 225s with the Moog SSD107 stabilizer. I've had it for about a year now with no issues. I did get the $20 Monroe one the first time around and it lasted about 3 years before blowing out a seal. I am a little skeptical of...

I'll admit, I have a hard time admitting defeat on these sorts of things. Especially this thing, because it didn't tick before the manifold replacement and does now. Makes me feel like I did the job wrong, but the shop did it and it still sounds the same... My Jeep does make a noise like...

Sorry for the late update. Checked the CkPS in the distributor and the sound is definitely not originating from there. I do not believe it is piston slap as I have heard a motor with it and it doesn't match this one. I'm half tempted to just toss pushrods and rocker arms at it since it seems...

I attempted to get videos the other day under the hood and in the engine bay. You couldn't really hear it over the noise of everything else so I'm not going to take the time uploading using my donkey powered internet. I looked at the rad fan and spun it. It does not contact anything. Same with...

I did not have time today to do any editing, but I got a video on my commute home. This one seems to have picked up the metallic clatter better, but who knows after it gets sent through the internet. I will try to get videos tomorrow underneath and under the hood. https://youtu.be/Kwldv4GjYHE

Sorry guys, it's not a very loud sound and can be hard to hear. I have tried using a stethoscope but I can only tell it's top end noise coming from around the back third of the engine towards the firewall. If you watch the 98 XJ Ticking (Park) video, it's especially audible about 18 seconds...

Hi all, Fair warning: there is a lot of history behind this issue. The vehicle that has brought me along for this adventure is a 1998 Jeep Cherokee, 4.0L, AW4 transmission. I will be telling you everything I have done to try to resolve this issue. This June, I installed: exhaust manifold...

Try this test. It may help narrow things down for you. (From a 2000 FSM.) MANUAL SHIFTING TEST (1) This test determines if problem is related to mechanical or electrical component. (2) Stop engine and disconnect transmission control module or module fuse. (3) Road test vehicle. Shift...

I agree with this. While double the price, they are the much more efficient. I do not know much about the 779 but have heard good things about the B&M SuperCooler 70264.

Looks like I made it a lot bigger than I needed to but better too much than not enough.

As Tim said, getting regeared will help a lot with all of the heat generation, but we all know this is not cheap. However, it is definitely worth installing a transmission cooler as he mentioned. Like the 4.0 itself, the AW4 can become a furnace, even to the point where it can blow the motor due...

It's been a while but I wanted to update everyone anyway. After testing over and over again at the NSS, I could get continuity on P, R, N, 3, and 2-1 at the right spots, but I just couldn't get it to work regardless of how many times I adjusted it at the vehicle. As a last ditch effort, I...

This is completely bizarre. I went through tonight and cleaned all my grounds again. Wire brush on a drill, going through each connector and made sure they looked like a mirror. Blasted em with brake clean and wiped er down with a rag when I was done. I scanned for codes and got not only the...

G106 is the ground for the nss right? I believe it's underneath the airbox. I did clean those.

I am here to admit defeat once again lol. I hate to say it, but I've been living with the no overdrive thing for a while now. I hate intermittent garbage. However, I do have some new developments! I have tested pins 9, 21, and 22 at the TCM harness connector once again. Here are the resistance...

I tried adjusting the switch just a hair while somebody ran through the shifter and verified it started in P and N with reverse lights in R but I am not sure if it did anything. N is still a bit finicky. For better or for worse, it's warm outside (over 60F/15C) and 4th gear has returned. Cleared...

Looks like my diagrams didn't go through... Try this again!

Thank you for the response lawsoncl. I did some digging earlier and found these diagrams, one similar to yours. Just going to dump them here just in case somebody else needs them. I followed the "Testing TCM Systems" procedure exactly and everything checks out, including the TPS. As for...