Strange repeating hissing noise.
Drove about 3k from cold. When I stopped there there was a hissing/gurgling noise that sounded like pressure being released coming from somewhere under the passenger's floor. It would go for about 4 seconds and stop, then do the same again about every 15 seconds. Kept it up in total for about 8 minutes. It didn't fade in or out, just started suddenly and stopped suddenly. It also continued for a while after the key was removed. There were no leaks underneath and no warning lights. Any suggestions please?
Drove about 3k from cold. When I stopped there there was a hissing/gurgling noise that sounded like pressure being released coming from somewhere under the passenger's floor. It would go for about 4 seconds and stop, then do the same again about every 15 seconds. Kept it up in total for about 8 minutes. It didn't fade in or out, just started suddenly and stopped suddenly. It also continued for a while after the key was removed. There were no leaks underneath and no warning lights. Any suggestions please?
