Ticking sound?
03-30-06, 03:31 PM
#1
Ticking sound?
My car makes a funky ticking sound but only when revving down from 2500 rpm to 1000 rpm. The frequency of the tick is proportional to the RPM, but not nearly as fast. It sounds like a 10 speed bike freewheeling or maybe the reel of a fishing line spooling out. It's coming from the area of the turbos, but I can't isolate it. It's pretty loud. Does not happen under acceleration, crusing, boost, etc. Only when I'm slowing down to stop or free revving the motor. The sound occurs with or without the clutch in, in and out of gears. The frequency is too low to be from a turbo wheel, I was thinking a vacuum leak but it's really unusual sounding for that. Any ideas? Thanks!
03-30-06, 04:31 PM
#3
Originally Posted by MrRx
unplug the connectior for the airpump, see if the noise persists.
if it goes away, more than likely your airpump is shot.
if it goes away, more than likely your airpump is shot.
03-31-06, 02:48 PM
#5
silver ghost
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It could be a sensor failing. Maybe the ISC solenoid? Have someone rev the car in the proper rpm and try to pinpoint the sound. I know this sounds funny but a long tube (piece of pvc) and stick it up to year ear and move it around the engine bay. See if you can isolate the location of the noise. It works. G
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