Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.
Old Sep 21, 2015, 03:49 PM
How-Tos on this Topic
Last edit by: IB Advertising
See related guides and technical advice from our community experts:

Browse all: General Overview
Print Wikipost

XJ Ask the Question Thread

Thread Tools
 
Search this Thread
 
Old Jan 27, 2013 | 10:08 PM
  #22141  
xj_maniac_newb's Avatar
CF Veteran
 
Joined: Sep 2009
Posts: 6,322
Likes: 6
From: Summerville, Ga
Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
Default

Originally Posted by NewKindOfClown
They've said in interviews that over the seasons, the goal has shifted away from accuracy and conclusiveness, and toward entertainment and children. They say they feel like they have an opportunity to inspire kids, and they want to encourage to go try the things they're wondering about.

While it ruined the show for me, I respect the intent.
Ahhh that makes sense. I watched some of the newer episodes (hoping to catch a good episode) but was disappointed.. But it's good to get kids into science, when i was a kid i went to the science museum in Augusta.. It really got me into science. Now that i say that, i wouldnt mind going back sometime.
Old Jan 27, 2013 | 10:21 PM
  #22142  
jeeperscreepers92's Avatar
Seasoned Member
 
Joined: Oct 2012
Posts: 444
Likes: 0
From: CA
Year: 1990
Model: Cherokee
Engine: 4.0L Inline 6
Default

Originally Posted by 1976Mustang
I'm not sure about that, i always wondered if it would cause more rust inside the exhaust system and engine since the main byproduct of burning hydrogen is water. As for power, if you get the mix right i think it would be the same if not more powerful.
which you could then develop a system that efficently seperates the hydrogen from the water (h2o) to refill the tanks with. after all water=H20. which is two hydrogen for every oxygen molecule. boom. using that you would then NEVER have to stop for gas theoretically

Edit: i realized that you woulod still have to stop for gas. but ok you wouldhave a much larger range between trips. and you would lose the need to have such a large fuel tank. hell if it goes off right you can end up using a gas tank 75% smaller with the same range as that you use today think about it. 10 bucks could fill up your tank and you can go all week with out that neeedle really moving. gas prices would naturally lower i guess. the value of the dollar would go up and other prices would fall to accomadate the deflation.

Last edited by jeeperscreepers92; Jan 27, 2013 at 10:34 PM.
Old Jan 27, 2013 | 10:36 PM
  #22143  
NewKindOfClown's Avatar
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
Default

Originally Posted by jeeperscreepers92
which you could then develop a system that efficently seperates the hydrogen from the water (h2o) to refill the tanks with. after all water=H20. which is two hydrogen for every oxygen molecule. boom. using that you would then NEVER have to stop for gas theoretically
No, because you need energy to burn that hydrogen. You can't make a perpetual energy device without tearing up the Law of Conservation of Energy.
Old Jan 27, 2013 | 10:38 PM
  #22144  
jeeperscreepers92's Avatar
Seasoned Member
 
Joined: Oct 2012
Posts: 444
Likes: 0
From: CA
Year: 1990
Model: Cherokee
Engine: 4.0L Inline 6
Default

Originally Posted by NewKindOfClown
No, because you need energy to burn that hydrogen. You can't make a perpetual energy device without tearing up the Law of Conservation of Energy.
lol yeah i went back and corrected my self.
Old Jan 27, 2013 | 10:38 PM
  #22145  
my89xj's Avatar
CF Veteran
 
Joined: Sep 2011
Posts: 10,447
Likes: 0
From: Frederick, MD
Year: 1989
Model: Cherokee
Engine: 4.0
Default

Your inline six will always blow on gas mileage...just accept it.
Old Jan 27, 2013 | 10:42 PM
  #22146  
sycoglitch's Avatar
CF Veteran
 
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Default

Originally Posted by NewKindOfClown

No, because you need energy to burn that hydrogen. You can't make a perpetual energy device without tearing up the Law of Conservation of Energy.
So true. You need energy to create another form of energy. Such as heat to boil water to create steam which turns turbines which creates electricity
Old Jan 27, 2013 | 10:43 PM
  #22147  
jeeperscreepers92's Avatar
Seasoned Member
 
Joined: Oct 2012
Posts: 444
Likes: 0
From: CA
Year: 1990
Model: Cherokee
Engine: 4.0L Inline 6
Default

Originally Posted by my89xj
Your inline six will always blow on gas mileage...just accept it.
ahahahah i know. But its a nice idea to tinker with. hwen i win the lottery i would probly delve further into it.
Old Jan 27, 2013 | 10:43 PM
  #22148  
1976Mustang's Avatar
CF Veteran
 
Joined: May 2012
Posts: 3,242
Likes: 2
From: Colorado
Year: 1992 Cherokee Sport
Engine: Bone-Stock 242
Default

Pff, Raider does 21mpg. that's actually 5 more than my moms '10 3.7 GC
Old Jan 27, 2013 | 10:46 PM
  #22149  
NewKindOfClown's Avatar
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
Default

Originally Posted by sycoglitch
So true. You need energy to create another form of energy. Such as heat to boil water to create steam which turns turbines which creates electricity
This is why, depending where you live, electric cars can be worse for the environment than gas. That electricity has to come from somewhere, and much of the country is still burning coal.
Old Jan 27, 2013 | 10:49 PM
  #22150  
1976Mustang's Avatar
CF Veteran
 
Joined: May 2012
Posts: 3,242
Likes: 2
From: Colorado
Year: 1992 Cherokee Sport
Engine: Bone-Stock 242
Default

Hamster power!!
And on the note of electric cars, Prius's are such a fab. The way i drive, a Prius would get the same MPG as my 21 year old Jeep. why? Because my Jeep actually have some power so i wouldn't be flooring it constantly to stay with traffic.
Old Jan 27, 2013 | 11:46 PM
  #22151  
DESERTXJ206's Avatar
CF Veteran
 
Joined: May 2011
Posts: 1,458
Likes: 2
From: Glendale,Az
Year: 1990
Model: Cherokee
Engine: 4.0l 6Cyl
Default

Best jeep parts websites.

Please list a few if you have them. Im mainly looking for stock parts to mild aftermarket. Looking for stock suspension and bushing stuff, replacement parts ect. I know you all have so small sites that google doesnt normal put up right away.
Old Jan 27, 2013 | 11:50 PM
  #22152  
xj_maniac_newb's Avatar
CF Veteran
 
Joined: Sep 2009
Posts: 6,322
Likes: 6
From: Summerville, Ga
Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
Default

Originally Posted by 1976Mustang
Pff, Raider does 21mpg. that's actually 5 more than my moms '10 3.7 GC
I get 25 mpg out of my xj.. consistantly

Last edited by xj_maniac_newb; Jan 28, 2013 at 12:26 AM.
Old Jan 28, 2013 | 12:10 AM
  #22153  
DESERTXJ206's Avatar
CF Veteran
 
Joined: May 2011
Posts: 1,458
Likes: 2
From: Glendale,Az
Year: 1990
Model: Cherokee
Engine: 4.0l 6Cyl
Default

Anybody have any info for the best brake pads on rockauto?

For my 88 4.0 Aw4 4dr xj


I see many options and prices. I was looking at the powerstop brand they look heavy duty. Any reviews or info?

Also some say front full size and mid size. What do they mean by that?
Old Jan 28, 2013 | 12:37 AM
  #22154  
salad's Avatar
Herp Derp Jerp
Premium Member
 
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Default

Originally Posted by xj_maniac_newb
Do the RPM's jump up when you turn? Or does the engine bog down some? Ifthe wires on your pressure sensor on the PS are broken it'll bog down.. Ask me how i know
Just for reference only the 2.5L XJ PCMs have a power steering pressure switch to bump up RPM. On 4.0 units the function is used for the extended idle switch.

Originally Posted by jake92
The meaning of DD:
Life - Daily Driver
Internet - Daily Douche

Suit yourself, if someone says to be "double-D" in real life I ain't thinkin' about cars...

Originally Posted by jake92
So has anyone seen or even tried on their XJ a hydrogen fuel addon system? I've seen quite a few trucks with them and I'm told that MPG gains are approximately 20 - 30% which may not sound like a whole lot but would probably be enough to be worth the $1,000 or so for the kit
Originally Posted by jeeperscreepers92
but wouldnt that put more wear on the engine? and what about power? Would you atleast break even on torque and horsepower?
One of the problems with introducing hydrogen to an internal combustion engine (hell, even the damn fuel tank) is that the hydrogen itself breaks things: http://en.wikipedia.org/wiki/Hydrogen_embrittlement

In a 100% hydrogen fuel internal combustion you see a huge hit in fuel economy. I remember just before it started to be a fad BMW was making dual-fuel cars. Hydrogen V12 made the same sort of power as a V8 running high octane lol.

Originally Posted by NewKindOfClown
They've said in interviews that over the seasons, the goal has shifted away from accuracy and conclusiveness, and toward entertainment and children. They say they feel like they have an opportunity to inspire kids, and they want to encourage to go try the things they're wondering about.
Well that sounds well and good taken out of context from the show, but one of the other changes throughout the seasons is "make it go boom". Seriously. After each "myth" is "tested" (both terms used VERY loosely) everything they blow up, shoot, or burn now. Don't try that **** at home, kids.

Originally Posted by NewKindOfClown
This is why, depending where you live, electric cars can be worse for the environment than gas. That electricity has to come from somewhere, and much of the country is still burning coal.
Ehhh not so fast there. It's a nice thought (coal power seriously needs to go away), but large-scale power generation is generally waaaaay more efficient than a few million little power plants puttering around. Like 98% vs. 20%. Maybe less for the 4.0 lol. Another factor with regard to electric vehicles in a commuter environment is that they're ideally charged at night off-peak, taking advantage of otherwise wasted juice.
Old Jan 28, 2013 | 12:59 AM
  #22155  
jeepsurfer1's Avatar
CF Veteran
 
Joined: May 2011
Posts: 2,516
Likes: 4
From: va
Year: 1996
Model: Cherokee
Engine: i-6 4.0
Default

Originally Posted by salad

Just for reference only the 2.5L XJ PCMs have a power steering pressure switch to bump up RPM. On 4.0 units the function is used for the extended idle switch.
On all years? JW



All times are GMT -5. The time now is 10:49 AM.