1988 Jeep Cherokee back firing
09-07-2015, 06:22 PM
#1
Newbie
Thread Starter
Join Date: Sep 2015
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
1988 Jeep Cherokee back firing
My jeep will crank fine but once you give it gas it starts missing and back firing. I've replaced the map sensor, coil, ignition module, distributor, TPS,fuel pump, plug wires, cap and rotor. Checked the grounds and cleaned. Checked the catalytic converter. Hope you guys can help I'm out of options.
09-08-2015, 08:49 AM
#2
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,872
Received 1,526 Likes
on
1,238 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Wow. That's a lot of parts to throw at it.
Tested fuel pressure? Indexed distributor? Firing order correct? Hose from throttle body to MAP in good shape?
Ever done Tip 5 in my link below?
Tested fuel pressure? Indexed distributor? Firing order correct? Hose from throttle body to MAP in good shape?
Ever done Tip 5 in my link below?
09-08-2015, 04:34 PM
#3
Seasoned Member
Join Date: Aug 2011
Location: washington
Posts: 328
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1987
Model: Cherokee
Engine: 4.0 6cyl
I'm having similar issues and just started digging into it.....I'm subscribing to see if you find anything. And if I figure mine out ill post it as well.
09-08-2015, 07:04 PM
#4
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,872
Received 1,526 Likes
on
1,238 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Thread
Thread Starter
Forum
Replies
Last Post
XJ ONLY
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
01-26-2019 06:30 PM
Ashs1714
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
09-04-2015 10:14 PM
csmith237
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
08-24-2015 12:54 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)