Long Crank Period
my 2.5l has a new plugs wires rotors fuel filter and it hesitates when speeding up and accelerating uphill i can here pump when turn key.have not checked pressure.where can i check before pulling pump
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Good chance the material that has worn off your clutch is stuck to the CPS since it is magnetic. Sometimes you can get by with removing the CPS and cleaning the debris off the tip of it so it generates a stronger signal. Got a voltmeter? You can check CPS output.
CF Veteran
Joined: Nov 2011
Posts: 1,290
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From: phoenix az
Year: 1989
Model: Cherokee
Engine: 4.0l 6 cylinder
I Have replaced all the neccasary items and mine still takes about 3 seconds to start the 89 just take a little bit longer to get up the rpms before they start
CF Veteran
Joined: Nov 2011
Posts: 1,290
Likes: 0
From: phoenix az
Year: 1989
Model: Cherokee
Engine: 4.0l 6 cylinder
Originally Posted by Blakpearl
my 2.5l has a new plugs wires rotors fuel filter and it hesitates when speeding up and accelerating uphill i can here pump when turn key.have not checked pressure.where can i check before pulling pump
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
So i pulled cps had a chip how i dunno but replaced anyway seemt to wanna crank faster but still hesitates. So now im gonna try to clean throttle body it looks dirty and see from there i guess it need some tlc i havent payed enough attention its been a solid jeep i go on the sandy beaches a dirt roads with confidence so now its time to give back
this is an awesome place to connect with other jeep cherokee drivers Much Mahaloz if you guys have anything to add to keep the pearl purring please reply! Aloha be backsoon
this is an awesome place to connect with other jeep cherokee drivers Much Mahaloz if you guys have anything to add to keep the pearl purring please reply! Aloha be backsoon
When accer8ing does the fuel pressure increase to accomadate demand . I had a yj that needed a fuel pump and that solved it. I dont have any codes flash so im leaning toward a fuel pump to solve all this hesitation issues.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Have you ever removed the ground strap that attaches to the firewall and scraped the paint off of the firewall, cleaned the eyelet and reinstalled it? They were a problem here in Arizona. I can only imagine what that cable looks like after living in Hawaii. I'd replace it with a #4 cable if it were me.


