Deisel sounding motor

[mk1966]

I have a 1999 Intrepid with approx. 94k miles. The other day I was driving when I started to hear a clunking noise coming from the motor area. It sounded like I had a desiel motor. It only makes this noise at idle and when the car is at normal operating temperature. When I give it the gas above 1500 rpm the noise goes away. When I let go of the gas the noise is there again. I do not get the noisee when the car is cold. Only at normal operating temperature. I get no check engine or oil pressure light at all. The exhaust is also clean. I am running 10-30 Castrol durablend oil. Any ideas people.

Mark

[theFREAKnasty82]

Don't drive it much longer, it sounds like you have a spun rod bearing or possibly piston slap, either way it's very serious and can cause serious engine damage if left unattended. I hate to say this, but you are going to either need a new engine put in or a rebuild.

[Eagle88]

let me guess, a 2.7?

[nick bamberger]

sometimes an engine in need of a valve alignment will make a similar sound..its more of a pinging at certain RPM, or when under a load.