View Full Version : Strange Hissing Noise
ledzilla
06-22-2016, 08:27 AM
When I got to work this morning, I heard a hissing noise coming from the front left. I thought it was the tire, but it wasn't, the sound was coming from under the hood. It was louder after opening the hood, still coming from front left. Sounded like something was sizzling on the exhaust. And then it became increasingly intermittent, like something really was dripping onto the exhaust and boiling off. But I saw nothing. Thwre was nothing on the exhaust, nothing dripping onto the ground. After a few minutes it stopped. I'm rather baffled by this.
Turbov6Bryan
06-22-2016, 08:35 AM
Possible water trapped and your air pumps running too much, or its hissing cause it's leaking???
The air ride pump is directly under your air filter
ledzilla
06-22-2016, 08:39 AM
Possible water trapped and your air pumps running too much, or its hissing cause it's leaking???
The air ride pump is directly under your air filter
If you're referring to the air ride suspension, not sure that's the cause. I have it on a manual bypass switch, so it doesn't operate automatically. But now that you mention it, I'm thinking maybe it's the air bag solenoids, or related. The rear end was low the other day, so I fired up the compressor, and it already looks like it may have dropped. I'll take a closer look when I get back outside.
fastblackmerc
06-22-2016, 08:44 AM
"front left" as your looking at the front of the car or the drivers side "front left"?
ledzilla
06-22-2016, 08:55 AM
"front left" as your looking at the front of the car or the drivers side "front left"?
Sorry... Front driver side.
ledzilla
06-22-2016, 10:36 AM
Did a quick check. The sound made by air being released from the air suspension is significantly different and much more quiet than what I heard after parking the car.
ledzilla
06-24-2016, 09:34 AM
I haven't heard the sound again. Don't know if it was a one-time thing or not.
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