2002 Jeep Geand Cheroke Limited eratic Idle

[dss56]

ON my Jeep 4.7 engine after car is warm and come to a stop/light the idle will sometimes drop to about 400rpm's. When I try to take off it kinda hesitates. This does not do it all the time. Sometimes when I stop it will Idle about 6-650 rpm and take off is smooth. I have been reading all the post on the idle issues and seems the part to replace is the Idle Air Control motor. I did clean in the summer but did not help. Thursday I went to the Chrysler parts store and bought a new IAC and replaced. Five miles down the road came to a stop and low 400rpm again. Is there any other module that might cause the sometime low idle? And if so where might it be located on the 2002 J G C L? Open for suggestions. 4.7 8cyl engine


thanks

[fredgerhauser]

Have you cleaned the Throttle body? I had the same issue with my 2000 WJ 4.7L.

[dss56]

Yes the throttle body has been cleaned about 3 times. I think my next part to replace it the TPS module. Other than the dealer does anyone no where to get the oem part. Autozone wants 33$ for replacement and Jeep Wants 83$ for oem
Any other suggestions?

thanks