ovysimac
Registered
Hello All:
A few days ago, after making a sharp evasive move on my 93 M8 at hard acceleration (at about 45-55 mph):
-The dash lights went out for a few sec, then came back on. They never went off since.
- The climate control goes off and comes on by itself, as if the power is cut off. When it comes on, first it initializes (illuminates)ALL the possible displays on the screen (not just the temp and auto or vent as when you turn the ignition on). It momentarily does this when is off and even with the fuse (no. 16 in the OM) removed!! When "off" is pushed, the whole display goes blank.
- Sometimes the air bag light fhashes on/off for a few times, sometimes longer.
- The Antilock light sometimes comes on for a few secs, and sometimes longer
- Sometimes the "Check charge system" comes on for a few secs, goes off, and then it may come on or not.
- Revving the engine in neutral brightens the headlights and every light in the dash.
- Even my rear solenoids may not vent sometimes when parked (not that often though).
Suspecting an alt overcharge I checked (as the manual said) the base voltage (12.5V); the no load voltage (15.6!!). Being more than 2.5V over the base voltage I think that I definitely have an overcharge. I will need to perform one more generator test to see if it is the regulator going bad (short?) or the problem is in what the repair manual calls "circuit A".
Questions:
1.Would an overcharge cause all the above described malfunctions?
2. Could it be only the battery going bad and not the regulator? The top of the batt is sometimes wet.
3.Anybody has any experience or info on this kind of behavior? All suggestions greatly appreciated.
Thank you and apologies for such a long post.
A few days ago, after making a sharp evasive move on my 93 M8 at hard acceleration (at about 45-55 mph):
-The dash lights went out for a few sec, then came back on. They never went off since.
- The climate control goes off and comes on by itself, as if the power is cut off. When it comes on, first it initializes (illuminates)ALL the possible displays on the screen (not just the temp and auto or vent as when you turn the ignition on). It momentarily does this when is off and even with the fuse (no. 16 in the OM) removed!! When "off" is pushed, the whole display goes blank.
- Sometimes the air bag light fhashes on/off for a few times, sometimes longer.
- The Antilock light sometimes comes on for a few secs, and sometimes longer
- Sometimes the "Check charge system" comes on for a few secs, goes off, and then it may come on or not.
- Revving the engine in neutral brightens the headlights and every light in the dash.
- Even my rear solenoids may not vent sometimes when parked (not that often though).
Suspecting an alt overcharge I checked (as the manual said) the base voltage (12.5V); the no load voltage (15.6!!). Being more than 2.5V over the base voltage I think that I definitely have an overcharge. I will need to perform one more generator test to see if it is the regulator going bad (short?) or the problem is in what the repair manual calls "circuit A".
Questions:
1.Would an overcharge cause all the above described malfunctions?
2. Could it be only the battery going bad and not the regulator? The top of the batt is sometimes wet.
3.Anybody has any experience or info on this kind of behavior? All suggestions greatly appreciated.
Thank you and apologies for such a long post.
