major problem need advice plz
CF Veteran
Joined: Aug 2009
Posts: 1,047
Likes: 3
From: Hanover,Ont, Canada
Year: 1991
Model: Cherokee
Engine: 4.o
Check your fuel pressure and flow sounds like it is starving for fuel. A lean condition will also cause the exhaust to glow. The tailight issue is prob a bad ground....
Good luck
Good luck
Thread Starter
Seasoned Member
Joined: Nov 2009
Posts: 302
Likes: 0
From: Western NY
Year: 1999
Model: Cherokee
Engine: 4.0L I6 Power Tech
i think the fuel pressure at the rail was 18-20psi(i think not to sure,will check tuesday night)i just put in a new sending unit 4-6-10 and new sock
Thread Starter
Seasoned Member
Joined: Nov 2009
Posts: 302
Likes: 0
From: Western NY
Year: 1999
Model: Cherokee
Engine: 4.0L I6 Power Tech
what exhaust? i cut it off on the down pipe... the vac leak you here is when the she goes to stall out she starts sucking air big time like a prostitute
CF Veteran




Joined: Nov 2010
Posts: 5,841
Likes: 117
From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
If you are out of spec, replace the pump/regulator or the entire assembly.
Thread Starter
Seasoned Member
Joined: Nov 2009
Posts: 302
Likes: 0
From: Western NY
Year: 1999
Model: Cherokee
Engine: 4.0L I6 Power Tech
UPDATE: got a new fuel sending unit gotta get the blood back up under the *** of my rig and will update you al again whats she doing after that wish me luck
Thread Starter
Seasoned Member
Joined: Nov 2009
Posts: 302
Likes: 0
From: Western NY
Year: 1999
Model: Cherokee
Engine: 4.0L I6 Power Tech
Update... just had cole muffler install a new exhaust system and drove it home it was running like crap again same as in the video... she only likes to run wide open... at redlights/stop signs i had to bump it to neutral and rev her up to 2,000 wen she would allow me too... this problem is real baffling
Thread Starter
Seasoned Member
Joined: Nov 2009
Posts: 302
Likes: 0
From: Western NY
Year: 1999
Model: Cherokee
Engine: 4.0L I6 Power Tech
also my windows wont roll up they go very slowly or not at al i checked my wiring when i did the bypass and the wires are all good
Member
Joined: Mar 2011
Posts: 155
Likes: 0
From: Interlachen, Florida
Year: 2001
Model: Cherokee
Engine: 4.0
not sure if this is at all close but i had a 83 chevy once that i used to play everywhere in and i didnt really wash it much until the one day that i did....anyways the next morning on the way to work noticed the truck started losing power and i had to give it more gas to keep it going and then the headlights and everything dimmed, ended up coasting to a stop and getting it towed home, after hours of me and some friends looking under it, over it, through it and any other way to look at it, we found that a ground wire that went from the chassis to the engine fell off because of me washing it, i must of washed the rust/mud right off of the bond holding it on. just trying to help
Member
Joined: Feb 2011
Posts: 189
Likes: 0
From: Ocala, Florida
Year: 1998
Model: Cherokee
Engine: 4.0
Originally Posted by 99WhiteLightning
ok so i havent found out the problem so its going to the jy tomorrow i bought a 88 wrangler today


