Problem:
Hard idle, high RPM rev on startup and before switching gears, before switching gears it will sometimes jump to 3-4k rpms and "slip". Also a pinging noise when hitting the acceleration. Sounds like a BB in a metal tin.

so my 94 jeep grand cherokee (I6 4.0L) has been sitting at the mechanic for almost a week...

after flushing something? and "troubleshooting" for a week he told me he called the dealer and confirmed that carbon buildup could be the reason

now he says to clear all that shit out / valve cleaning? it will be $1500 to $1800
no way i can pay that right now...does this price seem a bit high?

for the jeep people, does this sound familiar? i looked on the internets and found that all the symptoms i have could be either the carbon buildup or the transmission, but i already rebuilt the transmission 2yrs ago

8/1/2007 6:41:41 PM

Call the dealership and ask for a quote on how much it would cost for them to partially disassemble and clean the engine.

Also, you might want to bring a mechanic down there with you to double-check and see that the guy did something and not just dick around for a week after seafoaming it.

8/1/2007 6:44:12 PM

^yup, this situation is sketching me out, the time he took & the fact that he called the dealership (i could have done that)

i called the dealer in cary auto park orwhatever the hell it is, and they said $65 for diagnosis, i'll call them for a specific price on cleaning carbon out of the engine

thanks mindstorm

ohh yeah, and car is only worth $3100 - kelly blue book

[Edited on August 1, 2007 at 6:50 PM. Reason : .]

8/1/2007 6:49:28 PM

seafoam that ish

8/1/2007 7:42:44 PM

crank position sensor went out on our cherokee years ago and caused a similar problem with the revs.

8/1/2007 8:23:15 PM

Search and post here -

http://www.jeepforum.com/forum/forumdisplay.php?f=13

8/1/2007 9:52:24 PM

important question is where is it at?

8/2/2007 1:25:10 AM