 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / February 20054.6L Lincoln TC noise when engine is OFF
I have a '99 Town Car, 4.6L. Periodically when the engine HAS BEEN OFF for a while, there will be what sounds like a whirring or buzzing sound that lasts 5-10 seconds. By chance I was able to approximate where it was coming from one day when the hood was up... sound was coming from a compartment between the air filter box and driver's side headlight. What the heck is this and what does it mean? > I have a '99 Town Car, 4.6L. Periodically when the engine HAS BEEN OFF > for a while, there will be what sounds like a whirring or buzzing sound > that lasts 5-10 seconds. By chance I was able to approximate where it > was coming from one day when the hood was up... sound was coming from a > compartment between the air filter box and driver's side headlight. > What the heck is this and what does it mean? Level ride compressor. s >>I have a '99 Town Car, 4.6L. Periodically when the engine HAS BEEN OFF >>for a while, there will be what sounds like a whirring or buzzing sound [quoted text clipped - 4 lines] > > Level ride compressor. s Which should not run when the ignition is OFF. >>>I have a '99 Town Car, 4.6L. Periodically when the engine HAS BEEN OFF >>>for a while, there will be what sounds like a whirring or buzzing sound [quoted text clipped - 6 lines] >> > Which should not run when the ignition is OFF. The suspension stays active for something like 30 minutes after the key is turned off. It sounds like normal operation to me. Bob the Lincoln I have does the same thing. > >>I have a '99 Town Car, 4.6L. Periodically when the engine HAS BEEN OFF > >>for a while, there will be what sounds like a whirring or buzzing sound [quoted text clipped - 6 lines] > > > Which should not run when the ignition is OFF. I think that if you investigate further, you'll find that it DOES run when ignition is off. We (3 of us) sell ~1500 cars a year, many of them have level ride, and many of them do run with ign. off. What used to scare me more so than those compressors--literally--was when I first experienced cars whose electric fans, after the car had been switched off and locked up for the nite, suddenly started running. Some things, I agree, just seem to defy our common sense/everyday expectations. s > I have a '99 Town Car, 4.6L. Periodically when the engine HAS BEEN OFF > for a while, there will be what sounds like a whirring or buzzing sound > that lasts 5-10 seconds. By chance I was able to approximate where it > was coming from one day when the hood was up... sound was coming from a > compartment between the air filter box and driver's side headlight. > What the heck is this and what does it mean? Chiming in late... Yes, it is your rear suspension pump assembly doing its job. It is located under the hood. They do operate with the key off - its leveling the car after you get out of it. It takes about 10 seconds to decide that the ride level has changed long enough to require compensation. Be thankful that yours works, because they have a pretty high failure rate. Toyota MDT in MO |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.