i changed the sprak plugs wires on my 1990 300e and when i put the car on Drive it vibrates strongly. i kept checking that each wire is in the right place and on. do i need to restart the brain or reprogram the car ?
Sounds like you still have a wire crossed somewhere. Just for the future Change one wire at a time. Hope this helps good luck!
No, no reprogramming is required when wires are replaced. Did this just happen after the wires were replaced? It only happens while in gear, not in park or neutral? It could be the incorrect wires with too much resistance in them but that would more likely also show up while idling. I would more likely suspect that this is just coincidence and something else is wrong.
Sounds like if you are sure the wires are in the right place, you might have spiked the coil assy. I would buy a $7.00 spark tested and make sure all wires are sending spark to the plugs.
