HELP, trouble with DeVille
Nancy125
06-21-2004, 04:35 PM
I have a 1989 DeVille love it, but having a problem:
My computerized fuel gauge, and my heater gauge is showing a "c" then turns to a "d" and the heater blower is blowing, but it is set on Off.
the yellow service engine light is on. I disconnected the battery cable overnight is hopes to reset, but it didn't work.
Does anyone have any clue to what my problem is??
Thank you
Nancy
My computerized fuel gauge, and my heater gauge is showing a "c" then turns to a "d" and the heater blower is blowing, but it is set on Off.
the yellow service engine light is on. I disconnected the battery cable overnight is hopes to reset, but it didn't work.
Does anyone have any clue to what my problem is??
Thank you
Nancy
pcdoctor
06-22-2004, 10:42 AM
It may need to go in the garage. Battery cables may need to be cleaned, or it could be an alternator problem.
Nancy125
06-22-2004, 01:01 PM
thank you pcdoctor i'll let you know if this solves the problem. HOPE SO :)
MagicRat
06-24-2004, 08:46 PM
Have a garage scan for ECM trouble codes, for the 'check engine' light. As for the blower, many of the '80's electronic climate control units seem to develop a mind of their own. My Caddy does the same thing and it's tough to track down. You might have to swap the entire in-dash electronic unit with one from another car, from an auto diamantlers.
jasel
07-20-2004, 04:19 PM
I'm sure the 89 is not far from the 87 in this...
A really neat thing. The Environmental Control Module also acts as a diagnostic unit. It will tell you which error codes have happened and it can also tell you temperatures, output levels to solenoids and relays and many other things.
I purchased a repair manual for my DeVille off EBay and it tells the key-codes and how to do everything. I first found out by borrowing a manual from my local dealership. They don't work on too many 87s anymore, so they were willing to let me have it for a while and even copy pages (before I realized I should give up and just buy my own).
Maybe try this approach before you take it in for costly diagnostics?
Hope that helps some...
I have a 1989 DeVille love it, but having a problem:
My computerized fuel gauge, and my heater gauge is showing a "c" then turns to a "d" and the heater blower is blowing, but it is set on Off.
the yellow service engine light is on. I disconnected the battery cable overnight is hopes to reset, but it didn't work.
Does anyone have any clue to what my problem is??
Thank you
Nancy
A really neat thing. The Environmental Control Module also acts as a diagnostic unit. It will tell you which error codes have happened and it can also tell you temperatures, output levels to solenoids and relays and many other things.
I purchased a repair manual for my DeVille off EBay and it tells the key-codes and how to do everything. I first found out by borrowing a manual from my local dealership. They don't work on too many 87s anymore, so they were willing to let me have it for a while and even copy pages (before I realized I should give up and just buy my own).
Maybe try this approach before you take it in for costly diagnostics?
Hope that helps some...
I have a 1989 DeVille love it, but having a problem:
My computerized fuel gauge, and my heater gauge is showing a "c" then turns to a "d" and the heater blower is blowing, but it is set on Off.
the yellow service engine light is on. I disconnected the battery cable overnight is hopes to reset, but it didn't work.
Does anyone have any clue to what my problem is??
Thank you
Nancy
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