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XJ Ask the Question Thread
CF Veteran
Join Date: Nov 2010
Location: some small town oregon
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Year: 1989
Model: Cherokee
Engine: 4.0
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Join Date: Aug 2011
Location: Prescott, Az
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Hi I was curious.
I just installed Bosch iridiums in my 87 4.0 and it is running better then ever but I am a bit worried that they will burn too hot
Is that something i should worry about?
Also I am curious to know how to burp this things cool and system properly I just did thermostat, thermostat housing, water pump, and both upper and lower hoses
And I had to dump coolant down the upper hose to get it to start cycling coolant and I know there is a better way haha
I just installed Bosch iridiums in my 87 4.0 and it is running better then ever but I am a bit worried that they will burn too hot
Is that something i should worry about?
Also I am curious to know how to burp this things cool and system properly I just did thermostat, thermostat housing, water pump, and both upper and lower hoses
And I had to dump coolant down the upper hose to get it to start cycling coolant and I know there is a better way haha
NGK Coppers work great.
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
CF Veteran
Join Date: Feb 2012
Location: Southern Oregon
Posts: 1,206
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Year: 1990
Model: Cherokee
Engine: 4.0
CF Veteran
Join Date: Feb 2015
Location: North Carolina
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Year: 1993
Model: Cherokee
Engine: 4.0
Alright, well, now I was adding some more freon (with UV Die) to the AC system in order find the leak, and then all of a sudden it just sprayed all the freon out of the side of the dryer. Im talking about the little spot where the lines connect. I'm guessing there was some kind of pressure release valve there? The Guage on the freon bottle said it wasn't even full yet. Was there air in the system? What happen? Lol
CF Veteran
Join Date: Nov 2010
Location: some small town oregon
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Year: 1989
Model: Cherokee
Engine: 4.0
CF Veteran
So replaced starter last night, started right away this morning but it wouldn't start after work right away. There's a click and all the radio and such go off. Then randomly starts. When it does start it's pretty instant.
Edit: could it be the key wearing out?
Edit: could it be the key wearing out?
Last edited by rcguymike; 06-16-2016 at 05:26 PM.
CF Veteran
Join Date: Nov 2010
Location: some small town oregon
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Year: 1989
Model: Cherokee
Engine: 4.0
Check your battery connections.
CF Veteran
Interesting though I pulled back on the shifter handle and it started. I think my new NSS needs realigning. I tried the reverse light trick but they stayed on at both extremes. Maybe I didn't tighten the adjuster bolt good enough either. I'll have to double check that when I get home.
Edit: Don't think it's that...just tried starting it and it would start for anything, tried swapping starter relay for fan relay. Only worked when I jiggled key up and down...the cylinder can't be bad can it?
Last edited by rcguymike; 06-16-2016 at 06:19 PM.
CF Veteran
Join Date: Mar 2012
Location: Quebec
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Year: 1996
Model: Cherokee
Engine: 4.0L
sometimes amazon.ca has good prices and free shipping so I'll get stuff from there. for example my RE leaf springs I just bought were from amazon, shipped within canada, so much cheaper than getting from RE themselves.
What area of QC are you in? I'm guessing not Val d'Or or Trois-Rivieres lol. Brokerage and jacked up shipping are the worst. HD Offroad has free shipping in the contiguous US, so I had them dropped off just on the other side of the border and drove over. Saved a TON of money.
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Join Date: Sep 2009
Location: ☼ Blackhole Sun
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Year: My Jeep is a GMC
CF Veteran
Join Date: Sep 2009
Location: ☼ Blackhole Sun
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Year: My Jeep is a GMC
Check the function of the ignition switch with a DMM, is the connecter fried?
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Join Date: Feb 2015
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Year: 1993
Model: Cherokee
Engine: 4.0
when I look it up, it seems that a lot of AC compressors have a pressure release valve, I'm guessing mine has on on the side of the high pressure line by the dryer. Here's what I mean, the dryer has what looks like four connections, look at pic. One for the low pressure switch plug. One on ethier side for the AC line connection. And the last one, I'm guessing is the pressure release valve. That's where it sprayed out on mine. It's the closest one seen n the pic below, opposite side of the wire plug
Last edited by 93XJeeper; 06-16-2016 at 08:48 PM.