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I should add to this post that the take away for me here is that when your intake air temperature sensor is showing you 220 degrees or even close to that, unless your IAT is bad, you are sucking air into the intake from somewhere other than just the normal ambient air.

Well, I feel like an idiot. I knew there was a leak in the intake manifold and my logic was that this wouldn't have caused such a high idle, and it wouldn't wait until it warmed up. Well, it does, and it did. I tightened all of the intake and exhaust manifold bolts. Most of them were loose. Runs...

The clicking is coming from the IAC. I replaced it, but it's doing the same thing. I tried to clean up as many grounds as I could. TPS seems to be getting good 5v. Ground to tps shows very low < 1 ohm. The odbii app is showing the throttle position at somewhere between 1-15% usually, which is...

It might be. I normally associate that with a speed up of the idle just a little bit, but maybe it is somehow not working correctly. It did sound similar. I'll take a better look tonight.

Replaced the IAT, mostly because it was showing close to 200+ F, and I thought that can't be right. The new one shows the same temps. I guess the incoming air gets pretty hot in there. The issue didn't return after replacement. It could have been the IAT, or maybe the computer finally decided to...

Hi folks, I've been troubleshooting this issue for a couple weeks. 98 XJ sport, 4.0. Suddenly it started jumping up in rpm after it warms up. I notice it of course when it's parked or braked while driving at a stop light, stopped. Instead of 800 or 900 rpms it will be somewhere between 1800 all...

Embarrassing, but I found the problem. Took the pan and gasket back out and there was a huge gouge/bend on one side of the rim, which was hanging it up.

We're replacing the rear main seal and track bar, and we've gotten the RMS installed and the bearing cap back on properly and the bracket back on the block. I then managed to get the pan back on after dropping the axle with no tires like we did to remove it. The pan will fit tight to the block...

All the major parts for a custom SYE ( slip yoke eliminator ) project on a XJ The yoke is a Powertrain Industries 3103-27cv, brand new in box ( @ $100 new ) The transfer case is a full time four wheel drive NP242 new process 242 J, 61797, 272 ratio, case stamped c-16119 AD (Goes for about...

Hi all. I am a new owner of a 98 XJ that has the Up Country package installed. The rear springs have not noticably started sagging yet. I would like to lift her to a total of around 3". I know the current coils and springs should have given it a 1" lift already. I am trying to understand some of...