My 1990 Majestic has been my faithful DD for twelve years.

The time has come where age and use forces two restorations. Living in Florida I have worn out the AC blowers. I replaced the originals (Valeo) with a pair of used Valeo O/E blowers. I rebuilt the small circuit boards completely, replacing ALL components, replaced the relays and installed the rebuilt passenger side blower. The blower operated perfectly during the Florida summer. In September it began shutting down periodically and then crapped out completely. Any ideas on possible failure/s? I would like to replace the blower control circuit with updated/modern circuitry, 100%. Any recommendations?
My second restoration is minor leather repair, strip the original dye, repair and condition the leather and re-dye. Any suggestions for dye remover and dried out ancient leather conditioner?

Thank you, Roger

 

Sometimes blower issues can be caused by the fuse box having cracked solder joints, if the fuse box is OK you should have 12v power at the brown w/blue tracer wire at the blower plug. This should be live even with ignition on.

Another major issue with the system is the degradation of the insulating foam inside the evaporator housing that crumbles over time, blocking the drains. If the drains are not cleared from time to time, condensate will build up and spill into the blower housings. That can cause fan to slow and gurgle and eventually get into the control circuit and fry the transistor etc.
I live in the temperate PNW but run the A/C pretty much all the time (if not winter) and have to attend to the A/C drains at least once a year.

To drain the system, pull back the carpet at the side of the trans tunnel and locate the A/C drain tube. There's one either side. Remove the short clear tube and replace it with a length of tubing long enough to reach out of the door. Take a can of compressed air or an airline and send a blast up the tube.

This is usually enough to disturb the built up foam blocking the drain allowing the condenste to flow through. It's often way more than you would think.

You can also remove some of the detritus from the evaporator cavity by removing the large square-ish "hose" that connects the blower to the CCU and reaching in with a small flexible vacuum attachment.

Unfortunately, these are the maintenance routines that come with owning a 35 year old car with a not-so well designed climate system.

BTW, don't get me started on the door handles!

good luck

Larry

 

Thank you Larry! "Not so well, designed climate system" exactly why I would like to replace it...