Still no Spark after new OVP relay
 

1990 300e
No Spark at plugs.
replaced the
Dist Cap Roto botton and the OVP relay with new one.
Enging will crank and fuel pump will sound.
Started and drove home Labor Day weekend has not started again. Did smell something hot on the way home.
Dis is turning and all wires are testing good with DMM.
All lights are comming on at the dash (ABS,Check Engine)
Where should we check from here. :behead:

OVP has no effect on the ignition system. Need to check wiring for the ignition control module, the TDC sensor, and of course the coil could be bad.
Gilly

Evaluating Electronic Engine Controls by Steve Brotherton
 

I suggest you read this before going any further.

MercedesShopWiki : EngineControls

Mercedes-Benz Driveability
Evaluating Electronic Engine Controls
by Steve Brotherton, Import Specialist
Published in: ImportCar∞, February 2001
http://www.peachparts.com/Wikka/EngineControls




Have a great day.