Jeep Cherokee Forum

Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

no start after motor swap

Thread Tools
 
Search this Thread
 
Old Mar 6, 2012 | 03:27 PM
Share
  #1  
chopej93's Avatar
chopej93
Thread Starter
Junior Member
 
Joined: Nov 2011
Posts: 60
Likes: 0
Year: 1991
Model: Cherokee
Engine: 4.0
Default no start after motor swap
ive finished up my motor swap and now i have no spark and no pulse to the injectors what could cause this motor is a 96 4.0 in a 91 Cherokee
Reply
0
Old Mar 6, 2012 | 03:57 PM
Share
  #2  
akita8's Avatar
akita8
Junior Member
 
Joined: Oct 2011
Posts: 43
Likes: 0
From: Las Vegas
Year: 1988
Model: Cherokee
Engine: 4.0l
Default
grounds not hooked up by the dipstick?
Reply
0
Old Mar 6, 2012 | 05:13 PM
Share
  #3  
cruiser54's Avatar
cruiser54
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default
Originally Posted by akita8
grounds not hooked up by the dipstick?
Yep, could be that for sure.

CPS plugged in? Did you change distributors?
Reply
0
Old Mar 6, 2012 | 05:28 PM
Share
  #4  
chopej93's Avatar
chopej93
Thread Starter
Junior Member
 
Joined: Nov 2011
Posts: 60
Likes: 0
Year: 1991
Model: Cherokee
Engine: 4.0
Default
all the grounds are good cps is plugged in and im using the distributor off my old motor
Reply
0
Old Mar 6, 2012 | 05:30 PM
Share
  #5  
jeepsthing's Avatar
jeepsthing
Junior Member
 
Joined: Oct 2011
Posts: 99
Likes: 0
Year: 1989
Model: Cherokee
Engine: 6cyl 4.0
Default
Did it cranking? Make sure all wires hook up right, did u swap engine that has a starter in, if not try swap starter from 91 to 96 that all i can think of good luck
Reply
0
Old Mar 6, 2012 | 05:36 PM
Share
  #6  
fishtaconc's Avatar
fishtaconc
CF Veteran
 
Joined: Mar 2009
Posts: 1,208
Likes: 1
From: Watha,NC
Year: Jeepless at the moment
Default
Did you swap all the connectors from the 91 to the 96. 91-95 H.O have different connectors then the 96+ OBDII. No spark/fuel pulse, leads me to think CPS, possible it got bumped while installing the engine.
Reply
0
Old Mar 6, 2012 | 06:08 PM
Share
  #7  
cruiser54's Avatar
cruiser54
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default
Originally Posted by chopej93
all the grounds are good cps is plugged in and im using the distributor off my old motor
Oh, you're using the dizzy off the old motor. Any chance it's not indexed correctly?

http://www.angelfire.com/my/fan/dist_index.html
Reply
0

Trending Topics

Old Mar 6, 2012 | 06:11 PM
Share
  #8  
chopej93's Avatar
chopej93
Thread Starter
Junior Member
 
Joined: Nov 2011
Posts: 60
Likes: 0
Year: 1991
Model: Cherokee
Engine: 4.0
Default
i didnt do that good info but im checking for spark off the coil
Reply
0
Old Mar 6, 2012 | 06:13 PM
Share
  #9  
cruiser54's Avatar
cruiser54
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default
Well, if that dizzy isn't in right, it ain't gonna start. Worth double checking.
Reply
0
Old Mar 6, 2012 | 06:17 PM
Share
  #10  
fishtaconc's Avatar
fishtaconc
CF Veteran
 
Joined: Mar 2009
Posts: 1,208
Likes: 1
From: Watha,NC
Year: Jeepless at the moment
Default
Originally Posted by cruiser54
Well, if that dizzy isn't in right, it ain't gonna start. Worth double checking.
And if the CPS isn't producing a signal, it ain't gonna cycle the injectors either. Worth double checking.
Reply
0
Old Mar 6, 2012 | 06:19 PM
Share
  #11  
cruiser54's Avatar
cruiser54
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default
Originally Posted by fishtaconc
And if the CPS isn't producing a signal, it ain't gonna cycle the injectors either. Worth double checking.
Sounds like some double checking is in order. It'll get fixed quicker out there working on it than spending time at the keyboard.
Reply
0
Old Mar 6, 2012 | 06:35 PM
Share
  #12  
chopej93's Avatar
chopej93
Thread Starter
Junior Member
 
Joined: Nov 2011
Posts: 60
Likes: 0
Year: 1991
Model: Cherokee
Engine: 4.0
Default
my buddys das is a mechanic him and a cupple guys from his shop looked at it everythings hooked up right they tested the cps and said it was fine but it still wont start
Reply
0
Old Mar 6, 2012 | 06:40 PM
Share
  #13  
cruiser54's Avatar
cruiser54
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default
Check the dizzy indexing.
Reply
0
Old Mar 6, 2012 | 07:23 PM
Share
  #14  
chopej93's Avatar
chopej93
Thread Starter
Junior Member
 
Joined: Nov 2011
Posts: 60
Likes: 0
Year: 1991
Model: Cherokee
Engine: 4.0
Default
tomorrow should bring answeres ill check everything you guys said and go from there
Reply
0
Old Mar 7, 2012 | 03:48 PM
Share
  #15  
chopej93's Avatar
chopej93
Thread Starter
Junior Member
 
Joined: Nov 2011
Posts: 60
Likes: 0
Year: 1991
Model: Cherokee
Engine: 4.0
Default
cleaned all my grounds checked the cps and still have no spart
Reply
0



Advanced Search

All times are GMT -5. The time now is 08:10 PM.