Discussion in 'E36 M3 (1991-1999) and E30 M3 (1986-1990)' started by azarallye, May 16, 2018.
Do not understand the question. There are only so many sources.
BMW obviously. Then there is Ebay and the likes or members on a forum like here.
You sure the solenoid itself is broken? These don't break down out of the blue. Check the soldering joints first.
Most likely the connections have broken
what have you done to test them?
Well I have tried bmw but they are obviously quite pricey,wasn’t sure if 2nd hand eBay ones were something to consider. I took it to eta motorsport as it is running rough on idle and he said it’s solinoids on the exhaust side
I think many of the second hand units that have lived in the vanos units are as just as likely to be knackered, there is no guarantees that your going to buy replacements that are better that what you already have.
It's very very rare for the actual solenoid to fail to be fair,
Most likely the connections
Pop them out it's not hard and check and see it with new seals
Where its common to be a dry joint on the PCB board, I wouldn't go as far as saying failure is "very very rare", its not always as simple as that, seeing as I've handled more of theses than most I'm in a firm place to say that they do very much fail and become crap at sealing.
I have a test bench for these and ones that seem to be good break down fairly quickly and fail to open when hot or close..
I actually have a vanos unit that runs with an electric motor as I tested them before I sell the replacements.