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To the best of my knowledge you get the o-ring when you purchase a new IAC motor. My motor is fine and I just cleaned it and the complete throttle body. I prefer to replace the o-ring but it may also be a proprietary size. Does anyone here know the dimensions of this o-ring?

I accidentally broke the threaded segment of the shock mounting stud off one of my C8.25 shock mounts. My primary concern is how to ensure the D35 brackets are properly located before welding them on the C8.25 tube. I am going out to take measurements now and remove the D35 brackets. My guess...

I accidentally severed the threads from the rear axle shoulder bolt the shock mounts to when removing the nut/washer recently. My first thought was to saw of the remains of the shoulder bolt on the front side of the axle bracket, mark the center and drill out rest of the bolt then grind off...

I forgot and need someone to remind me! If I have one leaf pack that is slightly taller/stronger it should be placed on a specific side of the vehicle. This is the same idea with leaf packs from a lift kit being marked "+" and "-". I was told this some time ago and have since forgotten. I...

Mine is currently working but, is in a very old vehicle. The OEM part number is 33002298. I find them on ebay for $70 and Amazon for $90. Surprisingly, I could not find one on Rock Auto. What are people doing when this solenoid acts up and needs to be replaced?

I still have the OEM closed system. I am replacing everything today as a result of a leak from the upper hose at the heater core. I examine the heater core fitting carefully and it is know to be fine. The only hoses available locally are Dayco with the one exception of the reservoir to the...

The Xj has been demanding in March: Early March: 1 - New high output alternator - winter storage killed the previous one 2 - New East Penn Intimidator AGM battery 3 - Replace fuel pump fusible link with fusible link wire 4 - Cut off ignition spade terminal (at starter relay) and patch with new...

I installed a new high capacity alternator (~ 100A) last Sunday and drove the '88Xj to work all week. I drove in the garage Friday afternoon and no accessories were left on. I tried to start the car early this afternoon and no response; not even the slightest sound. I put my DMM across the...

The fan controller comanche91 used in his conversion to twin Xj E-Fans https://naxja.org/forum/showthread.php?t=983427 is no longer available (Spal). I see a few that might be useful but, need some level of end-user confirmation regarding quality and durability before purchase. Can anyone...

I considered removing the mechanical engine driven cooling fan years ago and now it looks like I can do just that. Thanks must be given to comanche91 and Brendan_91XJ for this solution. See here: https://www.naxja.org/forum/showthread.php?t=983427 However, this is only part of my current...

I have been in arrears in performing diagnostic work on my Xj. A new IAC has helped reduce my engine start rpm flare and I found the TPS output signal (i.e., terminal C in the connector) to only provide a millivolt level signal yet, this is supposed to be a volts level signal. Renix vintage Xj...

It appears I no longer have vacuum (at least at the manifold on the back of the HVAC control unit in the dash) according to this reference thread http://naxja.org/forum/showthread.php?t=1143023 Unfortunately, I have been unable to locate the leak so, I need to remove the radio (above the HVAC...

These just failed while my Xj was down for master clutch cylinder replacement. I have been unable to identify much in the way of useful information regarding which of the two subsystems involved is the more likely culprit so, I thought it would be useful for me to begin this thread. What is...

First, my Xj is a 1988 model year. However, when I converted it to the AX-15 I also installed the external slave clutch cover from the 1994 vintage Xj. My clutch master just failed and I was unable to obtain the complete hydraulic system (i.e., master, line, slave) from any local parts store...

The segment of the antenna cable behind the dash broke and I need to buy parts to patch it. Does anyone know the type of coaxial cable that is used?

Issue #1 I have had difficulty getting my HVAC fan to work in the recent months but, this has degraded further this week and I am not observing airflow from dash vents or defrost (note A/C does not work - AC clutch stooped working ~2 years ago???). I think I have low airflow sometimes but...

I just installed new tires, 32x11.5R15 and the power steering felt weak when moving the Xj at slow speeds. I needed and added a few ounces of fluid a few days ago and it does feel improved. However, I have never flushed this system and I can see stains on the end of the gear near the passenger...

I found a vacuum leak the hard way...the line broke. This example occurred in one of the HVAC hard plastic lines in the engine compartment - I think it is the small diameter white tube. This is one of the lines that connects to the HVAC control on the dash. I was able to patch this using...

Late season rust prevention occurring... Is this as simple as removing every fastener I see? I need to remove them both to get at some rust at the mating surface between the wheel and the front door and do not know if body caulk or some other seam sealer will prevent easy removal. Let me know.

My rear floor pan has begun to rust along the seam between the front and rear factory floor pan sections. This is a difficult repair job in view of the location involved, the sheet metal above the front leaf spring mounts. I decided to purchase the Synergy 8240 leaf spring mounting bracket kit...