Just bought an 88 have a few mysteries to solve. - JeepForum.com
 
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post #1 of 10 Old 03-24-2013, 07:32 PM Thread Starter
joey48442
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1997 TJ Wrangler 
 
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Just bought an 88 have a few mysteries to solve.

I just bought my first comanche. Had a 1990 xj a few months ago.

This is a 1988, has had a ax15 swapped in, and rear disc brake conversion. Runs really strong.
But, it was rolled over, a long time ago. Body is crap:

But it does drive really well.
On to the mysteries.
What's the deal with my front axle? It has no vacuum disconnect. But, all the vacuum lines are there?

Is my rear axle stock? (Other than the awesome custom paint job). It does have rear disc brakes.

Mystery plug #1: Near the throttle body.

Mystery plug #2: Near the oil filter

It's also losing a ton of oil out the front. I think it needs a new oil pan gasket.
And lastly, the brake lights don't work. But the tail lamps, blinkers, and hazards all do.
Oh, and does anyone have an OEM air box for sale?

Thanks!
Joey

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post #2 of 10 Old 03-24-2013, 07:47 PM
ftpiercecracker
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1990 MJ Comanche 
 
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Previous owner swapped front and rear axles for a NON disconnect D30 (front) and a chrysler 8.25 (rear). Good stuff

Mystery plug number one is for an auto equiped MJ, yours has a manual, hence why it is not plugged in. On an MJ with an auto the Throttle Position Sensor (TPS) has two pig tails coming out of it, manuals only have one.

Mystery plug number two, i actually dont know.



As for your brake lights there is a ground you need to check inside the tail light housings that can get corroded/worn out. Drivers side IIRC.
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post #3 of 10 Old 03-24-2013, 07:53 PM Thread Starter
joey48442
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Quote:
Originally Posted by ftpiercecracker View Post
Previous owner swapped front and rear axles for a NON disconnect D30 (front) and a chrysler 8.25 (rear). Good stuff

Mystery plug number one is for an auto equiped MJ, yours has a manual, hence why it is not plugged in. On an MJ with an auto the Throttle Position Sensor (TPS) has two pig tails coming out of it, manuals only have one.

Mystery plug number two, i actually dont know.
Thanks! So the axles are desirable? They stronger than stocks?


Joey
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post #4 of 10 Old 03-24-2013, 08:07 PM
ftpiercecracker
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Well the non disco D30 is still a D30, just without the vacuum crap and intermediate shafts. There is a possiblity that they put in the later model High Pinion D30 which has larger u-joints and such, but i dont know a whole lot about that and as for the rear axle the 8.25 is a definate upgrade to the stock D35. Even an axle made out of wood is an upgrade from the D35.

To put it plainly, yes they are stronger than stock and desireable.
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post #5 of 10 Old 03-25-2013, 09:05 AM Thread Starter
joey48442
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Thanks for all the info!


Joey
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post #6 of 10 Old 03-25-2013, 10:09 PM
cruiser54
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Ditch that Fram filter for a Wix, Napa Gold, or Mopar.

If you own a Renix Jeep, you'll want to check this out.

An index to over 30 write-ups can be found in the link below

www.cruiser54.com

My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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post #7 of 10 Old 03-26-2013, 05:23 PM
ftpiercecracker
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Fram oil filter =
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post #8 of 10 Old 03-26-2013, 05:54 PM
JeepComanche89
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Yeah the tailiight/fuelpump ground is behind the drivers side taillight. I could check on mystery plug #2 tomorrow if i remember.
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post #9 of 10 Old 03-26-2013, 06:42 PM Thread Starter
joey48442
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Join Date: Mar 2009
Location: holly
Posts: 419
I cleaned that ground up. Come to find out the problem was under the dashboard. The wire from the brake light switch goes into a plug attached to the steering column. When I disconnected and reconnected that plug they started working. Must have been a bit of corrosion.

Thanks, and if you remember to check on that plug I appreciate it!


Joey
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post #10 of 10 Old 03-26-2013, 06:54 PM
JeepComanche89
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It looks sort of familiar yet i dont know what its for. Ill take a look tomorrow for you
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