I have a 1998 Mark VIII that has a code 99 which says "Vehicle unable to detect raising or lowering one or more corners". The dealership suggested I replace the rear ride height sensor. No help. Eddie at American Air Suspension suggested I put a new compressor on. No help. I also installed a new compressor relay. No help. Also replaced all solenoids. No help. Now the crazy thing is the car works properly about twice a month or when the temperature is below 25 degrees. Two years ago when new tires were installed the check air ride message displayed. I jacked up each corner of the car starting with the right front and let them back down slowly and the message would go away. Each time the car was lifted I would get this message. The last time was about three months ago when I had the front end aligned. It's not been right since then. The above does not help anymore. Any help on this at all would be greatly appreciated.
Crazy Air Suspension
- Thread starter ofc98
- Start date
Roadboss
On Work Release
When the car was lifted did they turn off the switch in the trunk ? This fault will usually occur after a time out in either pump up or vent mode. It may be that one of your front sensors is intermittinent or the rear sensor.
"I jacked up each corner of the car starting with the right front and let them back down slowly and the message would go away."
I would double check these for the above reason, be sure wiring is ok to each sensor.
Could you take us thru the startup, drive, high speed, back to low speed, then park cycles. Does the Check light come on or is there something else?
"I jacked up each corner of the car starting with the right front and let them back down slowly and the message would go away."
I would double check these for the above reason, be sure wiring is ok to each sensor.
Could you take us thru the startup, drive, high speed, back to low speed, then park cycles. Does the Check light come on or is there something else?