Hey guys.
first of I just found this site...really cool...I was googling my problem....
any way let's get to the hurt...I have a 1991 jeep Cherokee sport, 4.0, 4x4, with a 5 speed..
Other nite it died on me .the 30 amp en.gine control fuse was blown..replaced it blew again.
so I have a short...I used a test light and probed both terminals for the fuse and it lights up.
so I pull the two relays and it still lights the test light...according to my repair book the only components in that circuit are the two relays and the ecm
When I unpluged the ecm the test light went off.
Am I over looking something or is my ecm bad?...I really don't wanna spend the cash on a new ecm...
Thanks
first of I just found this site...really cool...I was googling my problem....
any way let's get to the hurt...I have a 1991 jeep Cherokee sport, 4.0, 4x4, with a 5 speed..
Other nite it died on me .the 30 amp en.gine control fuse was blown..replaced it blew again.
so I have a short...I used a test light and probed both terminals for the fuse and it lights up.
so I pull the two relays and it still lights the test light...according to my repair book the only components in that circuit are the two relays and the ecm
When I unpluged the ecm the test light went off.
Am I over looking something or is my ecm bad?...I really don't wanna spend the cash on a new ecm...
Thanks
I saw someone else posted a similar problem were their o2 wires melted on the header...I checked mine wires were melted....so I disconnected o2 and spred wires apart to isolate them and it is still shorting out.......??????
Junior Member
Quote:
Originally Posted by azredneck
I saw someone else posted a similar problem were their o2 wires melted on the header...I checked mine wires were melted....so I disconnected o2 and spred wires apart to isolate them and it is still shorting out.......??????
Try disconnecting the o2 sensor from the clip to the harness.
CF Veteran
Here's the pinout for a '92 ECM connector, hopefully the '91 is the same. I'd pull the plug and check each sensor circuit for shorts to ground.
Member
Quote:
first of I just found this site...I have a 1991 jeep Cherokee sport, 4.0, 4x4, with a 5 speed
Not to hijack your thread az', but I noticed in your Cherokee description that you were running 30x10.5R15 tires.Originally Posted by azredneck
Hey guys.first of I just found this site...I have a 1991 jeep Cherokee sport, 4.0, 4x4, with a 5 speed
I have a chance to buy a used set [4] of that size for $100 locally.
Would you have a picture of your Cherokee sitting on those? Any advice as to whether they might be able to be shoe-horned into a stock lift?
Anyone else?
...thanks
Quote:
I have a chance to buy a used set [4] of that size for $100 locally.
Would you have a picture of your Cherokee sitting on those? Any advice as to whether they might be able to be shoe-horned into a stock lift?
Anyone else?
...thanks
Well I figured out the jeep...the wire melted in another spot on the header that I didnt see the first time...she is running good now.Originally Posted by brdavis9
Not to hijack your thread az', but I noticed in your Cherokee description that you were running 30x10.5R15 tires.I have a chance to buy a used set [4] of that size for $100 locally.
Would you have a picture of your Cherokee sitting on those? Any advice as to whether they might be able to be shoe-horned into a stock lift?
Anyone else?
...thanks
As for the tires.....when I bought the jeep it was stock lift with the 30" tires....so it will work for u....might have have a little tire rub off road....I would show u a pic of my jeep but not sure how to post pics yet....$100 I think is a good deal for tires
Member
Quote:
Thanks!Originally Posted by azredneck
As for the tires.....when I bought the jeep it was stock lift with the 30" tires....so it will work for u....might have have a little tire rub off road....I would show u a pic of my jeep but not sure how to post pics yet....$100 I think is a good deal for tires
...someone else thought they were a good deal too.

I ended up with new P235/75R15's after all.
