89 YJ Sahara 4.2 Engine missing parts - JeepForum.com
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Unread 05-07-2014, 08:21 PM   #1
Monohm
Registered User
1989 YJ Wrangler 
 
Join Date: Apr 2014
Location: Cartagena, Bolivar
Posts: 3
89 YJ Sahara 4.2 Engine missing parts

Hi, my name is Alberto, this is my first post here. Recently bought a Sahara Edition YJ 89. It has a 3 speed automatic transmission. I did a trip of about 700 Miles from the city that I bought it. At the beginning I was at 1700 meter over the sea level, went almost 3.000 meter over the sea level where I felt a total loss of power, even at full trothle it didn't raised more than 2.500 rpm. I'm at sea level right now... when going lower the engine was feeling too much powerful and now it seems to run like a dragster. The bad thing is that the fuel consumption is too high. During the trip the floor was getting really hot, under the rear seat on the right side the paint looks burned and the carpet a little melted, the RR wheel well is melted...

So after the trip I've been reading a lot about this engine and found that there are a lot of things that have been replaced and removed. I will like to have this engine working as it should and as stock as possible.

To start with, there are two hose connections under the air cleaner base, found those openings without hose or plugs, completely open to the atmosphere. Some Wires are hanging out, some vacuum hoses disconnected, don't know if the PCV valves are the right ones, the heater hoses are not in place, and at the thermostat housing it seems to be a plug sealing where one of those hoses should be connected. There is a Vacuum reservoir under the battery that only has one hose connected, the other one under the water reservoir seems to be with all the hoses connected.
Where the exhaust pipe is leaving the engine to the cat, there is a n opening at the side that is sealed.
The fuel filter is not the stock one, it only has one input and one output instead of 3 total, in addition is not on the right side close to the carb, but is down on the left side next to the fuel pump.
I have a plastic fuel tank, I think is 20 Gal maybe what worried me due to the overheating that the exhaust is experiencing.
Is the rear Axle upside down? or does the plug is right at that height?

I've checked oil level on both axles and seems to be a little low, the rear one is dark brow. I'm feeling a strange noise when I drive very slow, like human walking speed, there is a knock noise from the rear and I feel the car moving side way when it sound, suspecting that there is something wrong in the diff gears or the bearings.

Look at the pictures and please help me find out that are the things that I'm missing, if you thing that more detailed pictures are needed to identify something else I can take some more... Thanks in advance.

Regards from Cartagena, Colombia.

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Unread 05-07-2014, 08:25 PM   #2
Monohm
Registered User
1989 YJ Wrangler 
 
Join Date: Apr 2014
Location: Cartagena, Bolivar
Posts: 3
More pics
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image_15.jpg   image_16.jpg   image_17.jpg  
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Unread 05-08-2014, 08:18 AM   #3
Old4X
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1990 CJ7 
 
Join Date: Nov 2008
Location: Ga
Posts: 5,094
http://home.sprynet.com/~dale02/list.htm

The link above is for the late model CJs, your early YJ is all but identical under the hood.

Yours looks clean, just needs lots of TLC and attention to detail. Use the above link to identify the various components and hook them up properly.
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418 miles on 19 gallons of gas. Can't beat the BBD !
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Unread 05-08-2014, 08:23 AM   #4
Old4X
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1990 CJ7 
 
Join Date: Nov 2008
Location: Ga
Posts: 5,094
"Is the rear Axle upside down? or does the plug is right at that height?"

Height is correct
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418 miles on 19 gallons of gas. Can't beat the BBD !
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Unread 05-10-2014, 05:23 PM   #5
Monohm
Registered User
1989 YJ Wrangler 
 
Join Date: Apr 2014
Location: Cartagena, Bolivar
Posts: 3
Thank you all for the inputs. I will be posting my progress on this restoration... regards.
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