I have a 98 Jeep Wrangler, it runs great. However after driving it on the highway or for a long period of time after the engine idles down the engine starts making a ticking sounds. The noise gets louder as the RPMs goes up. I had the oil pump check and replace the sending unit thought that might have fixed the problem. But if I let the engine sit for 20 mins and start it up again the noise is gone until it heats back up. I think I might know what it maybe but wanted to hear from other Jeep owners that may have experience the same thing. The Jeep only has 98K miles on it.
07-05-2013 10:31 PM
I'd look for an exhaust leak.
07-07-2013 08:43 AM
mukluk, thanks for the advise. I had someone look at that too, wasnt the exhaust.
07-07-2013 09:48 AM
Expansion after it reaches temp would be the dreaded exhaust leak. Check intake exhaust bolts/studs and the check the exhaust pipe where it meets the exhaust manifold.
07-08-2013 01:19 PM
Could it be a bad lifter?
07-08-2013 01:49 PM
It's an exhaust leak at the head, and the manifold replace the gasket or tighten ten down and see what happens, I have the same problem on my jeep...
07-08-2013 01:52 PM
Power steering pumps have been know to make cyclic ticking noise when they are having issues. I'd imagine if you search there will be some threads about it. Mines done it a couple times but then it went away before I got around to replacing the pump. First time it happened I spent a chunk of time with a stethoscope under the hood and it was definitely the PS pump.