Idles rough at stop light??????????

[graystarr]

Hey all,

I just purchased a 1985 190E. I was told that someone tried to jump the car but reversed the positive and negative. Well the car runs good, and idles fine in park however, when i put it in drive, it idles really rough and sometimes dies.

Any suggestions?

Thanks!

graystarr

[mctwin2kman]

Probably blown OVP relay fuse.

[graystarr]

seeing as I just got this car last night, I have no clue even where to look for that? Any diagrams out there or can you point me in the right direction?

[JEdwards]

the OVP is located behind the battery, possibly behind a "false" firewall made of plastic, and its a tall relay w/ a fuse on the top. There are only three relays back there, and two look the same, so it should be the odd man out.

However, the idle can also be a vacuum leak, or any number of other issues (there are a myriad of things that impact idle - still haven't figured out what mine is), including motor mounts.

[graystarr]

Thanks! I was told by the previous owner that the motor mounts have just been changed