SL/R231: Electric air control valve in engine bay
10-21-2018, 01:47 PM
#1
Junior Member
Thread Starter
Electric air control valve in engine bay
There is an electric control valve on ht e drivers side by the strut tower than makes a clicking sound when the engine is running. My r129 does not make is quiet. What is the valve and what does it do? I believe it needs to be replaced due to the noise it makes.
10-23-2018, 07:45 AM
#3
Junior Member
Thread Starter
I was able to determain that the valve is fuel purge valve. I ordered a replacement, I do not know if the valve is suppose to make a constant clicking sound. At times it does stop clicking. Most of the time when the engine is running it constantly clicks on and off. It is noisy.
11-09-2018, 12:07 PM
#5
Senior Member
I don't know how far away your next nearest dealership is but I would at least give them a call and see what they have to say about it.
11-09-2018, 02:03 PM
#6
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AMG GTC Roadster, E63s Ed.1, M8 Comp. Coupe
The OP mentioned that he had a R129 SL. That would be a 1989-2002 SL. Different car.
That said, The ticking sound for a purge valve is normal behavior. Remember that from our older MB's. They tick for a little while and then stop...
That said, The ticking sound for a purge valve is normal behavior. Remember that from our older MB's. They tick for a little while and then stop...
11-10-2018, 08:30 AM
#7
Junior Member
Thread Starter
I own a R230 and a R129. I replaced the purge valve, the new one is not noisy like the old one. The old one you could hear from outside the car with the hood down.
