1990 xj long crank time and hard starting
#48
Member
Thread Starter
Join Date: Oct 2011
Location: California
Posts: 112
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1990
Model: Cherokee
Engine: 4.0
#49
Member
Thread Starter
Join Date: Oct 2011
Location: California
Posts: 112
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1990
Model: Cherokee
Engine: 4.0
also was wondering if back pressure could have anything to do with it? considering i had the CAT sliced out because it was thrashed and replaced with a straight pipe because of lack of funds.
#51
Member
Thread Starter
Join Date: Oct 2011
Location: California
Posts: 112
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1990
Model: Cherokee
Engine: 4.0
not yet the jeep is my daily driver and ive been having to borrow cars and catch rides but i was getting ready to check and see what kind of battery my meter has in it
#52
CF Veteran
Join Date: Aug 2011
Location: Nor-Cal Coast
Posts: 10,489
Likes: 0
Received 17 Likes
on
17 Posts
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
These are about $5 at harbor freight. I use it to check amps from my solar or hydro power. To check the house or car voltage. (house now 12.25). At work for 110 or 220 V AC. (or the generators here). Or to check flashlight or button batteries. Or to check millavolts of thermocouples for gas appliances. Or resistance, like checking a coil. Or....or....or......Trying the test Cruiser (and others?) suggested for the CPS.(.5 volts AC). Not that yours shouldn't be fine, just that at this point it would be nice to put that one to bed, for GOOD!
#53
Member
Thread Starter
Join Date: Oct 2011
Location: California
Posts: 112
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1990
Model: Cherokee
Engine: 4.0
These are about $5 at harbor freight. I use it to check amps from my solar or hydro power. To check the house or car voltage. (house now 12.25). At work for 110 or 220 V AC. (or the generators here). Or to check flashlight or button batteries. Or to check millavolts of thermocouples for gas appliances. Or resistance, like checking a coil. Or....or....or......Trying the test Cruiser (and others?) suggested for the CPS.(.5 volts AC). Not that yours shouldn't be fine, just that at this point it would be nice to put that one to bed, for GOOD!
#54
CF Veteran
Join Date: Aug 2011
Location: Nor-Cal Coast
Posts: 10,489
Likes: 0
Received 17 Likes
on
17 Posts
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
http://www.harborfreight.com/7-funct...ter-90899.html
.................V.....Yea, I bought a "Better" $25 tester from HD. I managed to kill that and the cheap HF ones are still trucking on. (mostly), Go figure!...V
.................V.....Yea, I bought a "Better" $25 tester from HD. I managed to kill that and the cheap HF ones are still trucking on. (mostly), Go figure!...V
Last edited by DFlintstone; 10-18-2011 at 12:49 PM.
#56
MJ>XJ
Join Date: Mar 2009
Location: Griffin, G.A.
Posts: 17,836
Likes: 0
Received 4 Likes
on
3 Posts
Year: 1990
Model: Comanche
Engine: 4.0 I6
Doubt it but make sure your getting air back in in the fuel tank... bad gas cap... Distributor can also be tested but i think i read that was new as well... Computer... Should be able to find one easily in classifieds...
#57
::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
I've never heard that about ECU bolts. But you made me think of this.
A friend of mine, and an excellent tech, did this to fix an intermittent problem on his 88. He removed the ECU., unplugged it, sprayed the connectors on the ECU and on the Harness with a good electrical contact cleaner. Before putting it back together, he used a small pick to tighten up the female connectors that grab the pins. Never had the problem again.
That now reminds me of something I like to do on any newly acquired Jeep. I take about 20 minutes and go through the engine bay unplugging connectors and relays, inspecting the terminals, spraying out the connections with a good elictrical contact cleaner, applying a bit of dielectric grease, and putting them back together. Everyone you can find!!
Did you ever remove your coil from the ICU and clean and bend the spring contacts between the two?
A friend of mine, and an excellent tech, did this to fix an intermittent problem on his 88. He removed the ECU., unplugged it, sprayed the connectors on the ECU and on the Harness with a good electrical contact cleaner. Before putting it back together, he used a small pick to tighten up the female connectors that grab the pins. Never had the problem again.
That now reminds me of something I like to do on any newly acquired Jeep. I take about 20 minutes and go through the engine bay unplugging connectors and relays, inspecting the terminals, spraying out the connections with a good elictrical contact cleaner, applying a bit of dielectric grease, and putting them back together. Everyone you can find!!
Did you ever remove your coil from the ICU and clean and bend the spring contacts between the two?
#58
CF Veteran
Join Date: Jun 2011
Location: Nor-Cal
Posts: 2,858
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Originally Posted by huntingman2706217
Doubt it but make sure your getting air back in in the fuel tank... bad gas cap... Distributor can also be tested but i think i read that was new as well... Computer... Should be able to find one easily in classifieds...
#59
Member
Thread Starter
Join Date: Oct 2011
Location: California
Posts: 112
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1990
Model: Cherokee
Engine: 4.0
im really hoping its not the computer. On a side note took my meter apart and the fuse was blown. Anyways has anybody heard about possibly wallowing out the holes on the cps so it sits closer to the flywheel?