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XJ Ask the Question Thread
02-17-2013, 03:40 AM
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Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Get stock style spark plugs from the dealer. XJs can be picky about the plugs. It's either champion or ngk depending on your year range. The reason it makes a big deal is because with bad plugs and wire you'll get improper combustion and non efficient ones. And a lack of power. Plus a dirty exhaust system doesn't allow the gases to flow freely out after said combustion. And like this user said above me, yea also do the air filter too if you haven't done so lately. Dirty filter means less air being pulled into engine so less combustion. And seafoam for the gas tank to help clean injectors. Napa has a sale on seafoam right now for 6 and change a can.
02-17-2013, 03:46 AM
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Year: 1996
Model: Cherokee
Engine: 4.0
Get stock style spark plugs from the dealer. XJs can be picky about the plugs. It's either champion or ngk depending on your year range. The reason it makes a big deal is because with bad plugs and wire you'll get improper combustion and non efficient ones. And a lack of power. Plus a dirty exhaust system doesn't allow the gases to flow freely out after said combustion. And like this user said above me, yea also do the air filter too if you haven't done so lately. Dirty filter means less air being pulled into engine so less combustion. And seafoam for the gas tank to help clean injectors. Napa has a sale on seafoam right now for 6 and change a can.
Should I just put the Seafoam in the gas tank, or some in the brake booster? How much do I put in the tank and do I need to let it idle for a certain amount of time?
02-17-2013, 03:54 AM
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Yeah, I know about the cheapo spark plugs. I was going to get champion coppers. Fuel system cleaner = Seafoam, right?
Should I just put the Seafoam in the gas tank, or some in the brake booster? How much do I put in the tank and do I need to let it idle for a certain amount of time?
02-17-2013, 04:09 AM
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Year: 1996
Model: Cherokee
Engine: 4.0
02-17-2013, 06:10 AM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Here's how to test it:
CRUISER’S VACUUM TEST FOR EXHAUST RESTRICTION
Your vacuum gauge should come with an instruction booklet outlining the procedure. Hook the vacuum gauge up to a source on the intake manifold. Start the engine and note the vacuum reading. Usually 17 to 21 inches of vacuum. Throttle the engine up to 2,000 to 2,500 RPM for 20 seconds or so and the vacuum reading should stabilize to the same reading you got at idle. Let the throttle snap shut. The vacuum reading should shoot up about 5 inches of vacuum higher for a second and then come quickly down to the original reading. If the vacuum reading stays high and comes down slowly with jerky needle movements, you have an exhaust restriction.
02-17-2013, 06:43 AM
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Year: 1996
Model: Cherokee
Engine: 4.0
Here's how to test it:
CRUISER’S VACUUM TEST FOR EXHAUST RESTRICTION
Your vacuum gauge should come with an instruction booklet outlining the procedure. Hook the vacuum gauge up to a source on the intake manifold. Start the engine and note the vacuum reading. Usually 17 to 21 inches of vacuum. Throttle the engine up to 2,000 to 2,500 RPM for 20 seconds or so and the vacuum reading should stabilize to the same reading you got at idle. Let the throttle snap shut. The vacuum reading should shoot up about 5 inches of vacuum higher for a second and then come quickly down to the original reading. If the vacuum reading stays high and comes down slowly with jerky needle movements, you have an exhaust restriction.
CRUISER’S VACUUM TEST FOR EXHAUST RESTRICTION
Your vacuum gauge should come with an instruction booklet outlining the procedure. Hook the vacuum gauge up to a source on the intake manifold. Start the engine and note the vacuum reading. Usually 17 to 21 inches of vacuum. Throttle the engine up to 2,000 to 2,500 RPM for 20 seconds or so and the vacuum reading should stabilize to the same reading you got at idle. Let the throttle snap shut. The vacuum reading should shoot up about 5 inches of vacuum higher for a second and then come quickly down to the original reading. If the vacuum reading stays high and comes down slowly with jerky needle movements, you have an exhaust restriction.
02-17-2013, 06:44 AM
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Join Date: Aug 2011
Location: Prescott, Az
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
02-17-2013, 07:06 AM
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Year: 1998
Model: Cherokee
Engine: 4.0L i6
Does anyone have experience with front wheel/hub bearings that arent Timken? I want to replace both of mine however Im curious if theres a way around $180 for a pair of Timkens.
I know this is a random ebay company but they have good feedback - http://www.ebay.com/itm/170969811571...84.m1423.l2648
I know this is a random ebay company but they have good feedback - http://www.ebay.com/itm/170969811571...84.m1423.l2648
02-17-2013, 07:07 AM
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Year: 1998
Model: Cherokee
Engine: 4.0L i6
Now it will not start, no clicks just the beep when you turn the key and the lights come on. Will not jump either, same beep. I replaced the starter relay and the starter today but still no luck. Where should I go next? I read about the neutral safety switch being an issue, but would that cause it to not start at all even with a jump? !
02-17-2013, 07:35 AM
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Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Yeah, I know about the cheapo spark plugs. I was going to get champion coppers. Fuel system cleaner = Seafoam, right?
Should I just put the Seafoam in the gas tank, or some in the brake booster? How much do I put in the tank and do I need to let it idle for a certain amount of time?
02-17-2013, 07:36 AM
CF Veteran
Join Date: Sep 2010
Location: Mercer County, NJ
Posts: 12,692
Likes: 0
Received 4 Likes
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4 Posts
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Here's how to test it:
CRUISER’S VACUUM TEST FOR EXHAUST RESTRICTION
Your vacuum gauge should come with an instruction booklet outlining the procedure. Hook the vacuum gauge up to a source on the intake manifold. Start the engine and note the vacuum reading. Usually 17 to 21 inches of vacuum. Throttle the engine up to 2,000 to 2,500 RPM for 20 seconds or so and the vacuum reading should stabilize to the same reading you got at idle. Let the throttle snap shut. The vacuum reading should shoot up about 5 inches of vacuum higher for a second and then come quickly down to the original reading. If the vacuum reading stays high and comes down slowly with jerky needle movements, you have an exhaust restriction.
;p
02-17-2013, 11:12 AM
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Year: 1996
Model: Cherokee
Engine: 4.0
Can someone tell me how big the stock tranny cooler is if a jeep were to come with it? It just seems to me like i have 2 radiators or is the main radiator 2 parts? I highly doubt i have the stock tranny cooler because the part immediately in behind the grille is only a small portion smaller than the part behind it. Sorry if i'm just bein stupid, long night at work and i've never really stopped and looked at my radiator til now.
02-17-2013, 11:16 AM
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Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
Can someone tell me how big the stock tranny cooler is if a jeep were to come with it? It just seems to me like i have 2 radiators or is the main radiator 2 parts? I highly doubt i have the stock tranny cooler because the part immediately in behind the grille is only a small portion smaller than the part behind it. Sorry if i'm just bein stupid, long night at work and i've never really stopped and looked at my radiator til now.
Last edited by xj_maniac_newb; 02-17-2013 at 11:23 AM.