I did a search but did not come up with an answer because my problems are similar but not exactly like the others.

I need help. My 86' 300E is idling wierd "bouncing" between 500-600rpm when in gear (while stopped). The ingition system seems O.K. (it's not misfiring). The car will continue to run and has NOT stalled on me.

When I'm in drive, reverse, L2, or L1, the idle is rough and oscillates between 500-600rpm. When I put the car in park or neutral the idle is fine. The car also runs fine when I'm pressing on the gas pedal. This happens whether the car is cold or warm...there is no preference to the running temperature. If I'm on the freeway and take my foot off the gas pedal the car will run fine. It only occurs when I'm stopped.

Anyone got any ideas what's wrong with my car?

Thanks in advance for any advice/opinions.

Sincerely,

jrmd01@yahoo.com

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JR
1986 Gold 300E 4Dr automatic