help
Thread Starter
Newbie
Joined: Feb 2015
Posts: 9
Likes: 0
Model: Cherokee
no acceleration
New manifold gasket took care of high idle problem .....cleaned the iac & tb has new cts tps o2 sensor plugs wires cap rotar fuel&air filter have checked grounds and relays fuel pressure an pump when i try to accelerate it wont take the gas driving or sitting &idle will take gas pedal just as long as i gradually do it but i cant stomp it could it b the computer
Senior Member
Joined: Nov 2014
Posts: 603
Likes: 1
From: Hacienda Heights
Year: 1990
Model: Cherokee
Engine: 4.0
K I cleaned the iac an tb I've put new plugs an wire's new cap an rotar air filter cts an o2 sensor map sensor an no change still high idle jumps and spits win try to hit the gas pedal.. had a friend link up to it but it was only showing that it's staying in open loop...any suggestions.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Thread Starter
Newbie
Joined: Feb 2015
Posts: 9
Likes: 0
Model: Cherokee
[QUOTE=cruiser54;3070136]It needs to be a solid 31 at idle and 39 when you unplug the hose from the fuel pressure regulator.[/QUO
Checked the compression and all 90psi except cyl 3 got 60 and cyl 6 got 70 put new time chain on and made no difference still pop stumble win accel hard havent checked psi
again yet wat would cause bad compression
Checked the compression and all 90psi except cyl 3 got 60 and cyl 6 got 70 put new time chain on and made no difference still pop stumble win accel hard havent checked psi
again yet wat would cause bad compression
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
[QUOTE=kwhite90cherokee;3073830]
Rings or valves.
Only a leakdown test will differentiate.
It needs to be a solid 31 at idle and 39 when you unplug the hose from the fuel pressure regulator.[/QUO
Checked the compression and all 90psi except cyl 3 got 60 and cyl 6 got 70 put new time chain on and made no difference still pop stumble win accel hard havent checked psi
again yet wat would cause bad compression
Checked the compression and all 90psi except cyl 3 got 60 and cyl 6 got 70 put new time chain on and made no difference still pop stumble win accel hard havent checked psi
again yet wat would cause bad compression
Only a leakdown test will differentiate.