87MJTIM

Engine speed sensor? Connector C224, Violet w/ trace (A) and White w/trace (B ). It is about the right location - injector harness, back by the firewall. His wire colors are diff, thou. (Although, I see in the background purple and white wires. Should those plug together?)

Does the cig lighter work? That is wired with the clock. If the lighter works, then the clock is bad. On my MJ, the clock display went out. Sometimes, I look at it and it's lit up...and it still keep correct time!

715-1367. That's the part. Thanks to everyone!

Auto or manual? If you are 2wd, you will need a 4wd trans and a matching tcase. You should get the front drive shaft from the donor vehicle. No matter what vehicle is the donor (MJ or XJ) the rear drive shaft will need to be adjusted for length. The trans/tcase/front drive shaft should all be obtained from the same donor. Also, it goes without saying, the front axle.

I am looking for the NAPA part number for the vacuum harness that connects all the vac lines. It's located in front of the manfold on the Renix 4.0. My cruise control line snapped at the harness and I cannot fix it. I will need to replace the passenger side harness. Some where on CC there was the part number at NAPA. Thanks.

All AX15s have 23 spine shafts. It was the BA10 that had 21 spines. A tcase that came off of a 89 1/2 MJ/XJ will fit all later model AX15s. (Jeep dropped the BA10 mid-year in 89.) MJs and pre-97 XJs are VIRTUALLY the same from the front seats forward.

The tcase should bolt up to the AX15. The bolt pattern did not change for the years mentioned. The flywheel should be for the 89 since it is RENIX. All the other year's Jeeps are HO.

Saw this on CL in Baltimore. http://baltimore.craigslist.org/pts/4963941126.html I think that price is reasonable.

What can us first gen Renix do for scanners?

Check out www.jeepforum.com they cover all models of Jeeps, from MBs upto XYZ or whatever letters jeep uses

www.jeepz.com Says its an 88 short bed, 4.0 5spd 4wd.

The AX15 could be stock, but 3.55 was not available with a 5spd. PO may have swapped the trans or axles. Check the VIN to determine what it came with.

What year is your MJ? Which engine? Did it come with factory AC or was it dealer installed? Inquiring Minds Want to Know.

I think the seller if wrong about the pilot shaft. The BA10 and early AX15s used the same bushing. It was the 94+ AX15s that changed the input shaft. Sounds like he swapped the bell housing for you already. I thing $250 is a great deal. You may want to take it to shop that specialized in manual trans and have them test it. Best to spend a little now before you install it a find out its a dud.

First guess: CPS. Try Cruiser's CPS test tip.

ballast resistor going bad? If it overheats it shuts of power to the fuel pump. Try by passing the BR.

My father in law bought an 88 new. Most parts were labeled AMC. But I remember there were some Chrysler stars on some parts.

Shelby - I thought the XJ front drive shaft will fit since the axle and the Tcase came from the same vehicle. True, the rear DS will need to be modified. Lowly - I thought you claimed to have an AX15 already. If so, you just need the BH from the Dakota. If the Dakota has the complete AX15/BH, get them and sell your other AX15.

You can. You will need to locate an elusive AX15 BH from a Dodge Dakota. I am not sure of the years or the engine it bolted to. Search on here for more info.

The AX4 is an AX5, just missing 5th gear.

The AX15 won't bolt up to a 2.5. You will need an AX5.

Somewhere on CC is the 88 Electric Service Manual in pdf. Page 82 of the manual shows what the C317 looks like from front on. It looks like one of your photos. The manual also gives the location: "right rear of rocker cover." Isn't this your location? Page 89 of the manual shows the wiring harness location in the engine bay. The c317 is depicted in the center of the engine bay. I don't know if yours has cruise. It could be part of the wiring harness. Download the manual and look through.

Cruise control ground? connector C317 Solid black wire?

To bleed the brakes, you star at the cylinder farthest away from the master cyl. first. So, you bleed right rear, left rear, right front, and left front. If your MJ still has the load sensing valve, then you need to perform additional steps to bleed those lines. Search on CC for those steps. (I believe it involves opening the RF bleeder, pumping the brakes. This causes the by-pass valve to open. Then you bleed the both rear brakes. Be sure to close the front bleeder when done.)

Before you go and replace the RMS, check other places first for oil leaks first. Check the back of the valve cover. Check the oil pressure sender. Check where the dizzy goes into the block. You may need to clean the engine off, run it for several minutes and check for leaks in these places. Remember, oil will run down to the lowest spot. This is where the oil pan and trans bell housing are. The 4.0 tilts up in the front, so all the oil will collect in the rear. If you eliminate these other locations, then get a FelPro rubber oil pan gasket and RMS. If you will do it yourself, plan for several DIRTY hours. It not too hard, just dirty.