Auto Trans Control Valve making noise - PeachParts Mercedes-Benz Forum

graysilm · #1 02-19-2009, 04:47 PM

I noticed earlier that a part under my hood was making a slight hissing/air suction sound after I shut my engine off. The part number stamped on the part is 000 545 04 27 which I have identified as the Automatic Transmission Control Valve. I have never noticed this noise before, but that dosent mean it hasn't been making it. Is it normal for this part to make noise?

TMAllison · #2 02-19-2009, 04:59 PM

Is it located next to the ABS and Windsheild washer bottle or over by the turbo?

turbobenz · #3 02-19-2009, 06:03 PM

Its on the injection pump. Yes, they make weird noises. Mine farts whenever I pull the throttle linkage.

TMAllison · #4 02-19-2009, 06:05 PM

606.962 is electronic.

oldsinner111 · #5 02-19-2009, 07:05 PM

Swap some gasket maker over the top,make sure your top vac line is tight.I dip mine in caulk.

graysilm · #6 02-20-2009, 11:05 AM

Quote:

Originally Posted by oldsinner111

Swap some gasket maker over the top,make sure your top vac line is tight.I dip mine in caulk.

Is this necessary? Is it a problem if I can hear air leaking?

TMAllison · #7 02-21-2009, 12:00 PM

The 606.962 IP is electronic; there are no moving parts attached to it (linkage) and it doesn't have any vacuum lines.

Grayslim - Is the noise you hear comming from the left or right firewall? Lil putt, putt, putt noise? Goes away after 2-3 minutes?

*edit*I found your part number and as I suspected you are indeed referring to one of the two vacuum transducers attached to L/R fender wells. The proper name of the part is Pressure Converter. One contols the wastegate and the other the EGR valve. What you are hearing is them venting vacuum. Perfectly normal.