87 XJ crank but wont turn over
02-20-2017, 03:30 PM
#1
Newbie
Thread Starter
Join Date: Feb 2017
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
87 XJ crank but wont turn over
Recently just bought an 87 XJ and have slowly been putting in new parts that seem to have an issue. The newest issue is that it will crank but wont turn over until it sits for a while and then will start right up again. Thanks for the help
02-20-2017, 08:34 PM
#2
CF Veteran
Join Date: May 2012
Location: Lost in the wilds of Virginia
Posts: 7,964
Received 952 Likes
on
767 Posts
Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
If it cranks, it turns over. Two terms for the same thing - the starter motor makes the engine go roundy roundy.
Have you checked your fuel pressure? When it's not starting, have you checked for spark?
Have you checked your fuel pressure? When it's not starting, have you checked for spark?
02-20-2017, 08:45 PM
#3
Seasoned Member
First, take the connector on the engine-side of the firewall, just above the brake booster, apart and clean the terminals REALLY well, then re-connect. Second, go through all your grounded points, inspect, clean and re-fasten- especially at the base of the oil dipstick.
Then, try checking your crank position sensor with an analog meter while cranking. These are prone to thermal failures with age.
A little more history on what you've done, and haven't done, to troubleshoot would help.
Then, try checking your crank position sensor with an analog meter while cranking. These are prone to thermal failures with age.
A little more history on what you've done, and haven't done, to troubleshoot would help.
02-21-2017, 08:36 AM
#4
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,875
Received 1,526 Likes
on
1,238 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Test stuff and do Tips 1 through 5 in the link below.