Sep 21, 2015, 03:49 PM
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XJ Ask the Question Thread
CF Veteran
Joined: Jan 2013
Posts: 19,219
Likes: 45
From: west chester, pa
Year: 1999
Engine: 4.0
First off, I want to say thanks to everyone on this forum. If it weren't for this group of people, i would have surely pushed my jeep off a cliff in frustration on more than one occasion 
. I recently discovered a big crack in my poorly put together homebrew cold air intake and noticed that there was a whole mess of junk in my throttle body and intake manifold (mostly oily, also due to a clogged ccv/pcv). I kept digging deeper, cleaning out the sludge, one thing led to another, and now I have my cylinder head off and siting on the work bench. It is a 2000 XJ Sport 5-speed with the dreaded 0331 Cylinder head. I'm wondering if it's worth putting back on or if i should just bite the bullet now when it's already off and replace it with a new beefier one. How likely is it that this is going to crack on me any time soon? I've never had any notable coolant loss, there's no cross contamination between coolant and oil, the head gasket was completely intact, and there are no visible cracks in the cylinder head. It has been overheated before and it's warped maybe a couple thousandths in the middle. If I didnt replace it, I would get it machined and Lap the valves, I just don't want to put money and effort into a flawed part if it's going crack on me in the near future The Cherokee has about 125,000 miles and i plan on keeping it for as long as i can. Thanks for any and all advice!!
. I recently discovered a big crack in my poorly put together homebrew cold air intake and noticed that there was a whole mess of junk in my throttle body and intake manifold (mostly oily, also due to a clogged ccv/pcv). I kept digging deeper, cleaning out the sludge, one thing led to another, and now I have my cylinder head off and siting on the work bench. It is a 2000 XJ Sport 5-speed with the dreaded 0331 Cylinder head. I'm wondering if it's worth putting back on or if i should just bite the bullet now when it's already off and replace it with a new beefier one. How likely is it that this is going to crack on me any time soon? I've never had any notable coolant loss, there's no cross contamination between coolant and oil, the head gasket was completely intact, and there are no visible cracks in the cylinder head. It has been overheated before and it's warped maybe a couple thousandths in the middle. If I didnt replace it, I would get it machined and Lap the valves, I just don't want to put money and effort into a flawed part if it's going crack on me in the near future The Cherokee has about 125,000 miles and i plan on keeping it for as long as i can. Thanks for any and all advice!!
CF Veteran
Joined: Jan 2013
Posts: 19,219
Likes: 45
From: west chester, pa
Year: 1999
Engine: 4.0
CF Veteran
Joined: Jan 2015
Posts: 1,381
Likes: 3
From: Southern Maryland
Year: 1991
Model: Cherokee
Engine: 1999 4.0L
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might be better just searching for "8-pin 3-position switch" since those can be wired up just about anyway imaginable
Last edited by ehall; Jan 22, 2015 at 06:46 PM.
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Basic electrical question:
I want a three position switch to run two lights as follows:
Position 1: Light 1 on
Position 2: Both lights on
Position 3: Light 2 on
What am I looking for in electronics terminology so I can find it? Relay/amperage isn't an issue here; just the switching aspect.
I want a three position switch to run two lights as follows:
Position 1: Light 1 on
Position 2: Both lights on
Position 3: Light 2 on
What am I looking for in electronics terminology so I can find it? Relay/amperage isn't an issue here; just the switching aspect.
A second switch with its own relay would be prudent so you can actually turn this stuff off lol
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
Are you using relays to power the lights? If so this can be done easily with a SPDT switch. Instead of hooking the lights up to the N/O side of the relay (pin 87), wire them up to the N/C side (pin 87a). Supply power to the center pin of the switch and run the throws to the coil on the relays. Presto, switch applies power to one or the other relay, thereby breaking that circuit, or applies no power and both lights are powered.
A second switch with its own relay would be prudent so you can actually turn this stuff off lol
A second switch with its own relay would be prudent so you can actually turn this stuff off lol
And way to do it with a toggle switch/rotary/anything else? Or am I gonna need relay(s)? I really don't care for electrical. I'd rather pay for a harness when one's available
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
I can do a diagram for you if you like.
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
Edit: Bonus question: Could I use a DPST center open switch:
Light 1 to position 1
Light 2 to position 3
Leads to both to position 2
Using diodes to prevent power from flowing through position 2 when position 1 or 3 is selected?
That's purely hypothetical. I'm probably using the wrong terminology, and it may be completely impractical/impossible
Last edited by NewKindOfClown; Jan 22, 2015 at 08:42 PM.
Newbie
Joined: Nov 2014
Posts: 10
Likes: 0
Model: Cherokee
Roaring noise
Okay so on my '99 XJ when I first start it up after it's been off for more than about 30-45 minutes it roars when I start to drive off. It doesn't sound like that when it is just idling. Just when I put my Jeep in drive and drive off. I'm pretty sure it's just the electric fan because when it idles the fan comes on like every 10 seconds. But I'm not sure if it is the fan. I just think it is. Can someone please help? Thank you in advance
Last edited by Will_Root; Jan 22, 2015 at 09:52 PM. Reason: Misspelling
Junior Member
Joined: Jun 2014
Posts: 68
Likes: 0
Model: Cherokee
Engine: 4.0
Okay so on my '99 XJ when I first start it up after it's been off for more than about 30-45 minutes it roars when I start to drive off. It doesn't sound like that when it is just idling. Just when I put my Jeep in drive and drive off. I'm pretty sure it's just the electric fan because when it idles the fan comes on like every 10 seconds. But I'm not sure if it is the fan. I just think it is. Can someone please help? Thank you in advance
Newbie
Joined: Jan 2015
Posts: 16
Likes: 0
From: Virginia
Year: 1994
Model: Cherokee
Engine: 242 4.0l I6 High Output
I have a bone stock '94 XJ. This Summer I want to take the doors off and I've heard multiple people say its okay to and others say the unibody will fold in half? Please help!
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
I don't have all my pictures here on the work computer, but this is one of six jumps that day (not the fastest/highest one), and I wheeled it stock (doorless) on Blue-Blacks and a Red trail.
Tons of people have done this, and nobody has ever had a problem from it.
(And yes, I had a bunch of scrap metal, a D35 axle, a full cooler, used motor oil, a spare tailgate, two spare tires, both doors, and some other stuff in the bed when I jumped it)
Newbie
Joined: Jan 2015
Posts: 16
Likes: 0
From: Virginia
Year: 1994
Model: Cherokee
Engine: 242 4.0l I6 High Output
Does this answer your questions?
I don't have all my pictures here on the work computer, but this is one of six jumps that day (not the fastest/highest one), and I wheeled it stock (doorless) on Blue-Blacks and a Red trail.
Tim jumping the manche - YouTube
Tons of people have done this, and nobody has ever had a problem from it.
(And yes, I had a bunch of scrap metal, a D35 axle, a full cooler, used motor oil, a spare tailgate, two spare tires, both doors, and some other stuff in the bed when I jumped it)
I don't have all my pictures here on the work computer, but this is one of six jumps that day (not the fastest/highest one), and I wheeled it stock (doorless) on Blue-Blacks and a Red trail.
Tim jumping the manche - YouTube
Tons of people have done this, and nobody has ever had a problem from it.
(And yes, I had a bunch of scrap metal, a D35 axle, a full cooler, used motor oil, a spare tailgate, two spare tires, both doors, and some other stuff in the bed when I jumped it)
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
I understand. I wouldn't make a habit of jumping a Cherokee without a cage, regardless, but the reduction of structural strength with door removal is insignificant. If you're worried about it, get some unibody stiffeners (which are a good investment if you plan to wheel it for a few years). As for the MJ, it's a hybrid design. The front is unibody, almost identical to an XJ, but the rear is a boxed frame design onto which the bed bolts.
Newbie
Joined: Jan 2015
Posts: 16
Likes: 0
From: Virginia
Year: 1994
Model: Cherokee
Engine: 242 4.0l I6 High Output
I understand. I wouldn't make a habit of jumping a Cherokee without a cage, regardless, but the reduction of structural strength with door removal is insignificant. If you're worried about it, get some unibody stiffeners (which are a good investment if you plan to wheel it for a few years). As for the MJ, it's a hybrid design. The front is unibody, almost identical to an XJ, but the rear is a boxed frame design onto which the bed bolts.
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
Oh okay cool. I won't be wheeling again for a while, and I don't plan on jumping it either lol. And as for the doors, they're manual windows/locks so the only wires I'd have to worry about are the door speakers and the mirror assembly right? Or are there other unknowns I have yet to discover?
You can simply put quick connect weatherpak connectors on the speaker lines, or you can find the write-up that shows how to use ZJ Grand Cherokee door plugs to easily utilize full power accessories.
On a side note, you can add on the parts to get power accessories, and they'll plug right in. If that interests you, the ZJ door plugs would be your best bet. If you don't care, and you're willing to move your speakers and lose power mirrors, you won't have any wiring to worry about.