Date registered: Dec 2010
Vehicle: 2002 Mercedes C240 Elegance
Location: Toronto, Canada
Mentioned: 0 Post(s)
Quoted: 13 Post(s)
1991 SL500 - Issues with idle, cold starting, rough running
My friend has a 1991 SL500 with under 200k, well maintained that has recently been having some issues. He noticed that there is no voltage going to the idle control valve at all. Also we've performed the diagnostic test at the X11 port (pin's 3 and 2) and get .1v.. which is VERY odd... as BobTerry's post say it should be fluctuating and near half the battery voltage. Can a bad OVP relay cause this? Let me know the next steps I should perform and thanks in advance.
Last edited by marco455; 07-08-2019 at 10:01 PM.