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Jeep Cherokee

2526 messages,  Last post on Nov 03, 2009 at 7:50 AM

You are in the Jeep Cherokee and Jeep Grand Cherokee Forum. Your Hosts are steve_ & tidester

What is this discussion about? Jeep Cherokee, SUV


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#2461 of 2526
Re: 2000 Jeep Cherokee Classic [land_shark] by paule
Mar 26, 2009 (6:27 pm)
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Replying to: land_shark (Mar 26, 2009 5:22 pm)

The coolant issue sounds like a blown head gasket to me. I believe you are burning coolant which is why you could smell it. It could also be a coolant leak like you said where the coolant is dropping onto the exhaust and burning off.
 
I believe you would get the oil pressure symptoms prior to your oil pump failing. The only way to properly diagnose it is to put a gauge on it.
#2462 of 2526
re by land_shark
Mar 27, 2009 (7:47 am)
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I thought at first that I had a head gasket issue as well, but after putting the radiator seal in the smell has gone and it doesn't take any coolant at all, anymore so it must have been the rad, unless the sealant was able to seal the break in the head gasket? It did claim to be able to do that, so I suppose it's possible.
It just seems wierd that as soon as that problem was solved, the other oil pressure issue immediately cropped up.
I'll put a gauge on it to see what the real pressure is, for sure.
#2463 of 2526
1996 Jeep Sport "pcm , ecm" (computer) by mguy
Mar 27, 2009 (1:30 pm)
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I own a 96 Jeep cherokee sport 4(L) 4x4. I recently had to change out the computer. I found a cheap (free) one from a junk 2000. Put it in and the jeep started right up and runs fine, Only the engine light and generator light stay on. It won't pass e-check that way so I am in need of the right computer. I cant afford to buy a new one and junk yards dont have them. Help......
#2464 of 2526
Re: re [land_shark] by land_shark
Mar 27, 2009 (2:19 pm)
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Replying to: land_shark (Mar 27, 2009 7:47 am)

Checked my pressure with a 0-100psi gauge today, started up cold at just over 40psi; once it warmed up it will drop at idle down to 8-10psi, if I rev it up it will rise right away to about 35-40psi, the higher I rev the higher the pressure until I let off and then it drops instantly to 8-10psi. Is this indicative of my oil pump starting to fail or am I looking at some other issue? Thanks in advance!
Edit: my Haynes manual says the oil pressure at idle should be 13 psi and over 1600 rpm should be 37 to 75psi; I'm actually not far off of that, should I even be worried?
#2465 of 2526
what is this and why is it seeping oil / gas?!?! by salinity
Mar 29, 2009 (6:50 am)
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Hi all - new problem I'm having with my 1995 4-cyl (I know, I know) Cherokee. There's some sort of electrical connection which has a wire from the battery (?) and clicks into a "fitting" (sort of like a plug) which looks like it goes into the engine block. It's located just in front of the distributor cap on the passengers side. It came to my attention, because there's what appears to be a mixture of gas and oil seeping up thru it. What is this and what would cause this seepage (I can start it up with this thing "unplugged")? Still starts and runs (although I've had trouble starting as of late). Is she nearing the end?...
#2466 of 2526
Re: what is this and why is it seeping oil / gas?!?! [salinity] by salinity
Mar 29, 2009 (10:28 am)
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Replying to: salinity (Mar 29, 2009 6:50 am)

OK - so after some looking and posting, it appears as if this is my oil pressure sensor:
 oil pressure sensor
 
(the elec tape is there to prevent the white part on top from popping off).
 
So, is it likely that some sort of diaphragm within the sensor unit is compromised and that's causing seepage into the top connector? If I were to replace this, apart from draining the oil, is there a way to prevent oil from pouring out when I remove the old sensor unit (if it would even pour out)? Any other advice pertaining to replacing this is appreciated.
#2467 of 2526
Re: what is this and why is it seeping oil / gas?!?! [salinity] by paule
Mar 29, 2009 (5:31 pm)
Reply

Replying to: salinity (Mar 29, 2009 10:28 am)

I would go down to your local Jeep dealer and look at their "drawings" to find out exactly what it is and purchase one.
If it is the oil sensor and it is in the side of the engine block, you won't even need to drain the oil. All of the oil will be in the pan when the engine is not running.
Just pull it out and install the new one. Put a little bit of oil on the O-ring if it has one and reconnect the electrical connection.
Good luck!
#2468 of 2526
Re: re [land_shark] by paule
Mar 29, 2009 (5:36 pm)
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Replying to: land_shark (Mar 27, 2009 2:19 pm)

I'd be a little nervous if my gauge was reading that low.
 
I would change the oil pump just for peace of mind. You may have a bit of junk in the oil pan and it may be blocking the oil pickup a little bit. If it blocks it enough,...........
 
It's a bit of a pain to get the oil pan off but if it was me, I'd change it. Make sure you have a torque wrench to reinstall the oil pan.
#2470 of 2526
1989 Jeep Cherokee 4x4 auto with the 4.0 straight 6 by mataus
Apr 16, 2009 (7:50 pm)
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I really hope someone can help me with this problem I'm having...
 
I started to get this wobbling vibration in the rear of my Jeep at about 40 to 50 Mph. It wobbles so hard that it almost feels like the rear end is going to fall off the truck. Problem solving the issue, I first thought was that maybe the drive shaft was out of balance. In thinking that was the problem, I went ahead and pulled the drive shaft off. After doing so, I went ahead and took the Jeep out for a spin in 4 hi. Again, when I got to about 40 to 50 Mph, the wobbling vibration still occurred. So than I went ahead and lifted the front end of the truck up and spun up the tires. I wasn’t getting any kind of vibration at all. In doing so, I realized that it had to be coming from the rear end of the jeep.
 
So my question is this, what would cause the vibration? I tried out different tires but it still occurs. The one thing I haven't done was to change out the shocks in back. Do you think that this would be the problem?
 
If there is anyone who can help, it would be greatly appreciated..
 
Tracy

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