Quote:
Originally Posted by slfan1
Hello everybody,
I am new to this forum and found the "write-up" on this thread amazing. Thank you for sharing this information with the rest of us.
I have a situation that has begun to concern me. The self-leveling suspension on my 1991 Euro 190E 2.5 16V works perfectly and does not go down at all (even when leaving the car parked for 3 weeks) or leak. However, with the engine running this valve (PN: 123 328 0531) produces a "thump" noise every 3-10 seconds (frequency varies). I would like to know if anybody has experienced this condition/situation and if this is any sign of "imminent failure" of this part. Any words of wisdom would be appreciated.
Best regards,
Slfan1
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That part is the SLS valve. It's responsible for maintaining the level of the rear. I've never heard of the SLS valve making a thumping noise. Are you checking this while under the car with the engine running? If not I'd do that so verify that is it that valve itself and not something else. Does it do it while while sitting or when lifting or raising? If it is the valve I'd suspect that it is a sign that it's failing. Make sure the system is full of fluid. Unfortunately there isn't much you can go with those valves. A new one or a good used one is the only option if it is failing.