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XJ Ask the Question Thread
11-20-2014, 10:26 PM
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
so, just got home from work. made a quick stop about 2 min away from the house and when I came back out saw steam coming from under the hood. checked and got a whiff of antifreeze. looked in reservoir, almost empty. I noticed that fluid was leaking right about at the firewall underneath vehicle. nothing inside cab and no smell.
had coolant in the back so filled to proper level and came straight home. checked level in reservoir, stayed exactly where I filled to. no leak once I got home. ran it for a bit and gauge stayed steady right in the middle. any thoughts?
did a search but haven't found anything that addresses this kind of issue. hoping its just a heater hose, but has this ever happened to any of you folks and what was the cause? i'll do some noggin pokin' tomorrow but any help is greatly appreciated.
had coolant in the back so filled to proper level and came straight home. checked level in reservoir, stayed exactly where I filled to. no leak once I got home. ran it for a bit and gauge stayed steady right in the middle. any thoughts?
did a search but haven't found anything that addresses this kind of issue. hoping its just a heater hose, but has this ever happened to any of you folks and what was the cause? i'll do some noggin pokin' tomorrow but any help is greatly appreciated.
11-20-2014, 10:28 PM
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Year: 1999
Model: Cherokee
Engine: 4.0 I6
Sounds like it could be a hose or your Heater Control Valve. Check the area to the rear of the engine bay on the passenger side and try to determine exactly where the leak came from. Coolant leaks are very rarely a one-and-done deal, and you'll want to nip this problem early.
11-20-2014, 10:31 PM
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Year: 1999
Model: Cherokee
Engine: 4.0 I6
did 99's have HCV's. I thought I read somewhere that those were deleted. prob wrong on that. if they did have an HCV, will that involve a dash teardown. please no........
11-20-2014, 10:33 PM
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
You're covered. The HCV would be in the engine bay, but your '99 doesn't have one. I'd start with the coolant lines where they meet the firewall. They may be splitting, or you may be missing a hose clamp.
11-20-2014, 10:52 PM
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Year: 1999
Model: Cherokee
Engine: 4.0 I6
Might was well do that system flush I've been meaning to do while I'm at it.
11-20-2014, 10:56 PM
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
No problem, bud. And now would definitely be a good time. Consider replacing your heater core while you're tearing into the system. It may not be necessary, but it may be worth it for winter depending on your budget and climate
11-21-2014, 07:12 AM
Seasoned Member
Couldn't find help anywhere...
I need to replace my starter, but I'm having a dilemma with cost. Autozone and other related stores want $139-159 yet I can go to JCWhit and get one for $80. What's the difference and is there a brand or store that I should stay away from? Thanks!
I need to replace my starter, but I'm having a dilemma with cost. Autozone and other related stores want $139-159 yet I can go to JCWhit and get one for $80. What's the difference and is there a brand or store that I should stay away from? Thanks!
Now, if you broke it off with a rock, you may need a new one. I'd try the Whitney first.
11-21-2014, 07:41 AM
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Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
11-21-2014, 07:45 AM
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Year: 1993 YJ Wrangler
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11-21-2014, 07:57 AM
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Year: 1999
Model: Cherokee
Engine: Inline 6 4.0
Well to give an update, my wife's uncle repairs starters so I'm taking it off Saturday and taking it to him to look at. Depending in the damage it's gonna cost, I'll get it repaired or replaced with a new one.
11-21-2014, 05:02 PM
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Year: 1994
Model: Cherokee
Engine: 4.0
I always rebuild my own starters, unless it's one that is really fried or tore up, which is a trip to the auto parts place. I do aircraft starters anyway, so the auto stuff just fits in...
11-21-2014, 10:18 PM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
4.0L performance Mods.....and Stats..
4.0L Engine revisions *********
'87-'90: 177hp at 4500rpm, 224lbft at 2400rpm, redline 5000rpm
The '87-'90 engines had Renix electronic multipoint fuel injection, electronic ignition, a 52mm throttle body, and an inefficient "low port" cylinder head similar to the old 4.2L/258. They have a water temp port in the back of the head. (Use a '91-'95 HO head for a head swap to replace these most easily.)
'91-'95: 190hp at 4750rpm, 225lbft at 3950rpm, redline 5250rpm
In 1991 engines received Chrysler sequential MPFI, a larger 60mm throttle body, revised intake and exhaust manifolds, and a more efficient high port cylinder head. As a result, these engines produced 13hp more than their predecessors and gained the "High Output" designation.
'96-'99: 190hp at 4600rpm, 225lbft at 3000rpm, redline 5300rpm
In 1996 engines received noise, vibration, and harshness fixes. The blocks were stiffened with extra ribbing, a main bearing brace was added, and lighter cast aluminium pistons were introduced to improve efficiency and reduce cold start piston slap. Engines also received revised camshaft timing for more low rev torque. Heads are similar except that they have no water temp port. (The OBD II system drives the guages and, only requires one port, these can be drilled and tapped for the sender used in earlier models if you're doing a head swap.)
'99.5-'01: 193hp at 4600rpm, 231lbft at 3000rpm, redline 5300rpm
In 2000 a distributorless coil-on-plug ignition system was installed, intake and exhaust manifolds were revised, and a more efficient water pump was included. These heads are quite different. They have smaller exhaust ports and, mounting bosses for the coil pack used with the distributorless ignition. There are different accessory mounting hole locations on these as well.
4.0L Engine revisions *********
'87-'90: 177hp at 4500rpm, 224lbft at 2400rpm, redline 5000rpm
The '87-'90 engines had Renix electronic multipoint fuel injection, electronic ignition, a 52mm throttle body, and an inefficient "low port" cylinder head similar to the old 4.2L/258. They have a water temp port in the back of the head. (Use a '91-'95 HO head for a head swap to replace these most easily.)
'91-'95: 190hp at 4750rpm, 225lbft at 3950rpm, redline 5250rpm
In 1991 engines received Chrysler sequential MPFI, a larger 60mm throttle body, revised intake and exhaust manifolds, and a more efficient high port cylinder head. As a result, these engines produced 13hp more than their predecessors and gained the "High Output" designation.
'96-'99: 190hp at 4600rpm, 225lbft at 3000rpm, redline 5300rpm
In 1996 engines received noise, vibration, and harshness fixes. The blocks were stiffened with extra ribbing, a main bearing brace was added, and lighter cast aluminium pistons were introduced to improve efficiency and reduce cold start piston slap. Engines also received revised camshaft timing for more low rev torque. Heads are similar except that they have no water temp port. (The OBD II system drives the guages and, only requires one port, these can be drilled and tapped for the sender used in earlier models if you're doing a head swap.)
'99.5-'01: 193hp at 4600rpm, 231lbft at 3000rpm, redline 5300rpm
In 2000 a distributorless coil-on-plug ignition system was installed, intake and exhaust manifolds were revised, and a more efficient water pump was included. These heads are quite different. They have smaller exhaust ports and, mounting bosses for the coil pack used with the distributorless ignition. There are different accessory mounting hole locations on these as well.
11-21-2014, 10:22 PM
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Year: 1999
Engine: 4.0
4.0L performance Mods.....and Stats.. 4.0L Engine revisions ********* '87-'90: 177hp at 4500rpm, 224lbft at 2400rpm, redline 5000rpm The '87-'90 engines had Renix electronic multipoint fuel injection, electronic ignition, a 52mm throttle body, and an inefficient "low port" cylinder head similar to the old 4.2L/258. They have a water temp port in the back of the head. (Use a '91-'95 HO head for a head swap to replace these most easily.) '91-'95: 190hp at 4750rpm, 225lbft at 3950rpm, redline 5250rpm In 1991 engines received Chrysler sequential MPFI, a larger 60mm throttle body, revised intake and exhaust manifolds, and a more efficient high port cylinder head. As a result, these engines produced 13hp more than their predecessors and gained the "High Output" designation. '96-'99: 190hp at 4600rpm, 225lbft at 3000rpm, redline 5300rpm In 1996 engines received noise, vibration, and harshness fixes. The blocks were stiffened with extra ribbing, a main bearing brace was added, and lighter cast aluminium pistons were introduced to improve efficiency and reduce cold start piston slap. Engines also received revised camshaft timing for more low rev torque. Heads are similar except that they have no water temp port. (The OBD II system drives the guages and, only requires one port, these can be drilled and tapped for the sender used in earlier models if you're doing a head swap.) '99.5-'01: 193hp at 4600rpm, 231lbft at 3000rpm, redline 5300rpm In 2000 a distributorless coil-on-plug ignition system was installed, intake and exhaust manifolds were revised, and a more efficient water pump was included. These heads are quite different. They have smaller exhaust ports and, mounting bosses for the coil pack used with the distributorless ignition. There are different accessory mounting hole locations on these as well.