dulboy32

First time using this forum, hope I'm doing it right. I have a 2004 Jeep Grand Cherokee Special Edition 4.7L V8, which just had a new transmission installed by 2 mechanics I know. First question is, does anyone know how many quarts of fluid it takes to fill the tranny and torque converter? I can only find 14 Qt when "dry" on the web, but doesn't mention torque con. They started running it w/ only 10 Qts. Another ? is my idle at start up is at 1280 RPM's and around 1000 while in drive. It sounds like a vacuum leak to me and my buddy, but mechanic guy says no, it's the idle air control. It sounds like wind coming from the air manifold, "TV type static" coming from my center heater console and a "rubbing type noise" coming from under the car, and when I brake from higher speeds I get a audible vibration coming from my center heater console area. I can't find any leaks so far and my heater and cruise control still work. Any ideas? Did these clowns just jack up my jeep? The idle is so high now that when I stop and the car downshifts it lurches forward. Thanks.

dave1123

It may be an improperly adjusted transmission throttle cable, not allowing it to return to idle. Pop it off the throttle and see if it cures your idle problem. If so, adjust it properly.

The only other thing I can think of is something got damaged when the jacked up and supported the engine. Check for anything back by the firewall that may have been crushed or broken. Check the CCV valve connection. that will cause a large vacuum leak. Also the power brake hose and heater control vacuum supply.

How well do you know these mechanics? A friend of mine owned a dirt bike repair shop. He had a piston on his counter with a hole melted in it and a sign; "The best way to destroy your bike is with a tune-up from a friend!"

dulboy32

Thanks for the help. Right after I wrote the question I went back out to look over the engine again and found it was a vacuum leak coming off of the PCV valve. Fixed everything. Thanks again.

dave1123

Yup! I suspected so. It's usually the plastic elbow on the 4.0. IDK what the 4.7's looks like, but it stands to reason it would be the same problem. The PCV and the CCV are the same thing, just what jeep calls it.