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Unread 03-05-2004, 02:40 PM   #1
Dembones
Registered User
1994 YJ Wrangler 
 
Join Date: Jan 2003
Location: Twin Falls, Idaho
Posts: 689
Big trouble in the little Jeep (also in YJ section)

It all started sometime in december when I went out for some muddin' and I found this innocent-looking stretch of ice. I've run through it before but it was shallower and only water. This time I floored it to get a good start and made it about 1/3 of the way without breaking through. When it did I was too suprized to watch the tach, but my friend said it reached 7500 Well I knew that was the time to stop so I backed up and let it sit for a minute running. It's been doing fine ever since but when I turn it off I hear a tickticktick that slowly dies away, which I think may be a mis-seated valve releasing compression.
*the problem*
Just yesterday the check engine light came on. It's done this before so I opened the hood, checked everything real good and went on my merry little way. Just today I was going uphill in 5th gear pulling about 2.6K revs when the engine sputtered big time. I put it in 4th and the same thing happened . I quickly turned off the highway and took it slow all the way home. Nothing happened until I just pulled onto my street. I heard a loud knocking when I slowed down to turn which continued until I put it into reverse. The whole Jeep shook and it knocked REAL loud so I turned it off and coasted into my spot . This was 15 minutes ago and I'm still too scared to try to start it and diagnose further.

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Blue '94 Wrangler, 2.5L: Under monsterization
37" Claws/teralow/HPD44/Trussed HI9/5:38s/detroits/SOA, shackle reversal on rebuilt waggy and XJ springs.
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Unread 03-06-2004, 09:50 AM   #2
Dembones
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1994 YJ Wrangler 
 
Join Date: Jan 2003
Location: Twin Falls, Idaho
Posts: 689
Found the problem: siezed water pump
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Blue '94 Wrangler, 2.5L: Under monsterization
37" Claws/teralow/HPD44/Trussed HI9/5:38s/detroits/SOA, shackle reversal on rebuilt waggy and XJ springs.
Blue Jeep Club member 2
Much more info here
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Unread 03-10-2004, 04:01 AM   #3
Scrambler82
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1982 CJ8 
 
Join Date: Jun 2002
Location: Boston Area
Posts: 3,594


Hey,

Was it the Waterpump ?
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Unread 03-10-2004, 07:12 AM   #4
Dembones
Registered User
1994 YJ Wrangler 
 
Join Date: Jan 2003
Location: Twin Falls, Idaho
Posts: 689
There's alot more info about it in the YJ section. The water pump is in the center at the front of the engine at the base of the cylinders. It runs off the S-belt and pumps coolant through the the outside of the clinder walls in a cavity within the block. If you look right behind your fan you'll see a pulley. Behind the pulley is the water pump, which is run off that pulley. The bering between the pump and the pulley fried which apparently was enough to sieze my puny 4-banger, and the pulley dug into the pump which caused the horrible knocking/grinding noises I heard.
__________________
Blue '94 Wrangler, 2.5L: Under monsterization
37" Claws/teralow/HPD44/Trussed HI9/5:38s/detroits/SOA, shackle reversal on rebuilt waggy and XJ springs.
Blue Jeep Club member 2
Much more info here
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