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Shake problem Q---I recall seeing some sort of harmonic balancer on the transfer case when I changed the fluid in it some time ago. Don't recall anything remarkable about the way it bolted back on, but I remember having to remove it to get to the drain plug. I wonder what symptom might occur...

I have something happening with my 02 4X4 with the 4.0 engine. I have a shake that occurs in the 40-45 MPH range as I am accelerating up to cruising speed. Almost feels like a misfire but no codes to indicate such. I had the "shake" both before and after installing a new set of tires and an...

Drive Cycle next. I found a vacuum leak, fixed it, cleared the codes (Except the P1000 as you stated) and I will do the drive cycle procedure to get things back to normal. (I hope) Thanks..........Regards...BAMeyer

Found Vacuum Leak I looked right where you mentioned and---shur' nuff'---there was a 90 degree hose and it had a hole in it. I was able to find a part at Advance Auto Parts that I modified for a pretty darn good replacement. It was called a bypass hose (Probably a water pump bypass) and is...

Thanks for the information CVAR and HOOLIGAN! I will give that hose a look and see if it's cracked. Regards......BAMeyer

I evidently have a vacuum leak that keeps turning on the CEL. Scan keeps showing P1000-MAF problem. I cleaned the MAF sensor, and eventually replaced it with another sensor. Is/are there any leak-prone area(s) on a 4.0 that I might look for? Truck is a 2002 4X4 extended cab with 82K miles...