Last edit by: IB Advertising
See related guides and technical advice from our community experts:
Browse all: General Overview
- Jeep Grand Cherokee WJ 1999 to 2004 Crash Test and Safety Ratings
Important Information to help you understand your Jeep Grand Cherokee.
Browse all: General Overview
XJ Ask the Question Thread
Junior Member
Joined: Oct 2014
Posts: 62
Likes: 0
From: Northern Utah
Year: 2001
Model: Cherokee
Engine: 4.0
exhaust/intake manifold gasket install: dry, right? no rtv or anything? just clean really well?
also, where the exhaust manifold(s) meet the exhaust/precat setup on my 01, do i need to use copper gasket spray or something? And should i expect those bolts to break?
also, where the exhaust manifold(s) meet the exhaust/precat setup on my 01, do i need to use copper gasket spray or something? And should i expect those bolts to break?
You never said??....did it run well "before" you tuned it??..and another obvious point..No cat.=Limp home mode in the EMC..so it will never perform as well as it should without it (barring. a lot of $$ and many Hi Po modifications) ..basically you just xxxxxed yourself...
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
You never said??....did it run well "before" you tuned it??..and another obvious point..No cat.=Limp home mode in the EMC..so it will never perform as well as it should without it (barring. a lot of $$ and many Hi Po modifications) ..basically you just xxxxxed yourself...
He realized his error and corrected it.
Went and got the codes read and posted them up.
My 2cents..If you have any age at all on your manifolds, it would be a good idea, to use some sealant..Hi Temp Silicone should seal any "warp" on the manifold surface (usually from "over torqued" bolts) I always "Flat" my manifold surface with a very sharp (large) Flat File (Fine grade) or a Bench Belt Sander (if available). As for the "Down Pipe" connection ..I like to "soak" nuts &bolts well (overnight if possible) with "PB Blaster" or an equivalent penetrating oil, even then they might want to break..if you have a lift, you can heat them with a torch (I don't reccomend using tourch with Jack Stands or Ramp unless you have a high level of experience..Fire Hazard). On the install, again, Hi Temp Silicone (the goo of choice for "roundy round racers everywhere) it will seal any irregular surface issues and "chips" right off on future repairs. One more important thing..use "Anti Sieze" on the Exhaust nuts &bolts (Manifold to Head too) for a easier repair "down the road"
CF Veteran
Joined: Jan 2015
Posts: 1,381
Likes: 3
From: Southern Maryland
Year: 1991
Model: Cherokee
Engine: 1999 4.0L
Some GM cars have flat manifolds, no gaskets. They spec a graphite dry lube to fill any imperfections, like the Lock lube, a few coats and it builds up pretty well. Aftermarket forums generally use Ultra Copper RTV instead.
Opps.. my bad..I read it that he did away with Cat. and installed Magna Flow muffler?? sorry..and as far as RTV..In a perfect world I agree with you..but..we are talking about a older 4x4 with a questionable service history..I have seen many warped, overtorqued, run with missing or broken bolts, and just generally abused Cherokee's...and most of them have had leaking manifolds and exhaust connections..a little RTV does wonders
Porsche uses a "membrane" sealant for Case halves..seen quite a few "metal to metal" applications myself..Have you ever seen the "Engine with NoGaskets" at the bigger Car Shows??...Runs all weekend with nothing but RTV for every gasket in engine...it's cool and really works..LOL
Can you bleed brakes from where line bolts to caliper? We couldn't get the bleeder valve loose so we've been "gravity bleeding" the line by keeping cap off reservoir and not bolting line tight to caliper. Don't know if this is a thing or not, but will it have any effect? Fluid is slowly dripping out. Thanks all.
Can you bleed brakes from where line bolts to caliper? We couldn't get the bleeder valve loose so we've been "gravity bleeding" the line by keeping cap off reservoir and not bolting line tight to caliper. Don't know if this is a thing or not, but will it have any effect? Fluid is slowly dripping out. Thanks all.




