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.

91 starts and dies...

Old Jun 29, 2013 | 07:25 PM
  #1  
87xj Pioneer's Avatar
Thread Starter
Seasoned Member
 
Joined: Mar 2011
Posts: 253
Likes: 1
From: Shawnee, Oklahoma
Year: 1987
Model: Cherokee
Engine: 4.2 .020 over
Default 91 starts and dies...

Ok I've went through the search feature and found a few different answers but to different problems than mine... 91 laredo... just bought it and starts and dies I've swapped all parts I can from my renix that I know work and still the same thing... starts then dies n that's it but I can keep it running by pouring gas in the tb and yes gas is going in the fuel rail and coming out... I bypassed the pressure regulator no change... swapped injectors outa my 87 no change... swapped map sensor no change...
Reply
Old Jun 29, 2013 | 07:38 PM
  #2  
87xj Pioneer's Avatar
Thread Starter
Seasoned Member
 
Joined: Mar 2011
Posts: 253
Likes: 1
From: Shawnee, Oklahoma
Year: 1987
Model: Cherokee
Engine: 4.2 .020 over
Default

Even put my fuel pump in the 91 and bypassed the ceramic regulator to the fuel pump but still no change... now when I got it the battery was disconnected and when I hooked the battery cables up all the lights inside and out started flashing and couldn't get them to stop... everything quit flashing shortly after I emptied the fuse blocks in the cab and under the hood...
Reply
Old Jun 29, 2013 | 07:58 PM
  #3  
Klroach92's Avatar
Junior Member
 
Joined: May 2013
Posts: 59
Likes: 0
From: virginia
Year: 1994
Model: Cherokee
Engine: 4.0
Default

Have you did a compression test?
Reply
Old Jun 29, 2013 | 08:09 PM
  #4  
87xj Pioneer's Avatar
Thread Starter
Seasoned Member
 
Joined: Mar 2011
Posts: 253
Likes: 1
From: Shawnee, Oklahoma
Year: 1987
Model: Cherokee
Engine: 4.2 .020 over
Default

It runs when I pour gas in the throttle body!! No need for a compression test...
Reply
Old Jun 30, 2013 | 08:20 AM
  #5  
Klroach92's Avatar
Junior Member
 
Joined: May 2013
Posts: 59
Likes: 0
From: virginia
Year: 1994
Model: Cherokee
Engine: 4.0
Default

Originally Posted by 87xj Pioneer
It runs when I pour gas in the throttle body!! No need for a compression test...
If it runs when you poor gas in manually and its pumping through the injectors and you have good pressure on fuel rail I would pull intake check if charred up around the injectors and inspect your valves. Also have you tried puttingcuses back in to see? Lights flashing etc possible wiring issue. I'm assuming you. Can only run it for a few seconds when you pour in gas did you pull any relays under the hood? Just check those my auto shutdown went out with similar symptoms just switch AC relay to, see. Hope that helpa
Reply
Old Jun 30, 2013 | 10:37 AM
  #6  
freegdr's Avatar
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default

Does just motor shut down or all accessories also shut down ?
Reply
Old Jun 30, 2013 | 10:45 AM
  #7  
87xj Pioneer's Avatar
Thread Starter
Seasoned Member
 
Joined: Mar 2011
Posts: 253
Likes: 1
From: Shawnee, Oklahoma
Year: 1987
Model: Cherokee
Engine: 4.2 .020 over
Default

All fuses and relays are currently in place as for everything shuting down I can't tell cause I'm out pouring gas in the throttle body... it'll stay running as long as I'm pouring gas in it.... I honestly don't think the injectors are getthing power... but what could cause that??
Reply
Old Jun 30, 2013 | 10:47 AM
  #8  
87xj Pioneer's Avatar
Thread Starter
Seasoned Member
 
Joined: Mar 2011
Posts: 253
Likes: 1
From: Shawnee, Oklahoma
Year: 1987
Model: Cherokee
Engine: 4.2 .020 over
Default

The only accessory that I know doesn't work is the radio... the previous owner pulled the all light bulbs from the cab area for some reason... but the blower motor works in all settings and all the exterior lights work...
Reply
Old Jun 30, 2013 | 11:12 AM
  #9  
freegdr's Avatar
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default

If it stays running when adding fuel id suspect pump or relay to it .
Reply
Old Jun 30, 2013 | 11:21 AM
  #10  
87xj Pioneer's Avatar
Thread Starter
Seasoned Member
 
Joined: Mar 2011
Posts: 253
Likes: 1
From: Shawnee, Oklahoma
Year: 1987
Model: Cherokee
Engine: 4.2 .020 over
Default

I've already changed fuel pumps, fuel filters and relays... no change... even bypassed the voltage regulator for the fuel pump...
Reply
Old Jun 30, 2013 | 11:23 AM
  #11  
87xj Pioneer's Avatar
Thread Starter
Seasoned Member
 
Joined: Mar 2011
Posts: 253
Likes: 1
From: Shawnee, Oklahoma
Year: 1987
Model: Cherokee
Engine: 4.2 .020 over
Default

Only two things I haven't tried is locking and unlocking the hatch to see if maybe the security was triggered... or swapping out ecu's
Reply
Old Jun 30, 2013 | 11:25 AM
  #12  
freegdr's Avatar
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default

Cant hurt if its got factory alarm .
Reply
Old Jun 30, 2013 | 11:29 AM
  #13  
87xj Pioneer's Avatar
Thread Starter
Seasoned Member
 
Joined: Mar 2011
Posts: 253
Likes: 1
From: Shawnee, Oklahoma
Year: 1987
Model: Cherokee
Engine: 4.2 .020 over
Default

Only problem is... the jeep is 20 miles away from my bro's n his house is where I get on the internet to talk with y'all...
Reply
Old Jun 30, 2013 | 11:31 AM
  #14  
freegdr's Avatar
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default

http://en.allexperts.com/q/Car-Alarm...alarm-Jeep.htm
Reply
Old Jun 30, 2013 | 11:32 AM
  #15  
freegdr's Avatar
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default

Originally Posted by 87xj Pioneer
Only problem is... the jeep is 20 miles away from my bro's n his house is where I get on the internet to talk with y'all...
Old school pencil and paper...
Reply

Thread Tools
Search this Thread

All times are GMT -5. The time now is 03:09 AM.