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98 Mark 8 AC problems

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Posted by: wnapstead

My 98 Mark 8 LSC has 90,000 miles. The AC was working fine when I bought it. I don't drive it much but sometimes the blower won't work, then the blower works but I can only get heat out of it, after its been working for a few minutes. I would appreciate any ideas from anyone.

Wnapstead

Posted by: MonsterMark

I believe those are symptoms of the dreaded 'blend door problem.

http://www.lincolnvscadillac.com/sho...ighlight=blend

Posted by: Frat-man-du

Blend door is not a fun fix, but cheap if you do it yourself.

Posted by: wnapstead

Sounds reasonable but what about the blower that works sometimes and sometimes not.

Posted by: MonsterMark

Usually a loose wire behind the glove box to the motor. I think there is a write up on that also.

Posted by: wnapstead

I guess you have to remove the glove box to get to it. Is that a big ordeal or something simple? Once in there how do you identify the culprit, connection to the motor. I'm no rocket scientist when it comes to these things.

Thanks!

Posted by: MonsterMark

Quote:

Originally Posted by wnapstead

I guess you have to remove the glove box to get to it.

Intermittent blower motor repair

Posted by: wnapstead

I did the blower motor repair thing, it doesn't seem to be that. I've checked all the fuses. A guy on ebay selling main control units for these(dash unit), says it's common for these to fail. He's got a used one for $137. This sure seems like a crap shoot to me. The last several times I've run it, the blower doesn't run. It almost seems to have given up completely. What would you suggest I try next?
Incidentally, when I dropped the glove box door, It didn't look like the picture in the tech article. Must be from an earlier unit.

Thanks again guys!

Posted by: Brozly

You could try a little "cleaner" on the contacts, (WD40 should work) you clould check them with an Ohm meter at the conector as well...
Seems like anybody selling anything on Ebay has a common faliure item

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