1983 240DL Idle problem / throttle Problem
 

I have a 1983 240DL with a 4cyl w/167000 miles on it. it was running great with no problems then one day i was on the freeway and the car kept accerating out of control i put the car in neutral and it rev up really high so i shut it off and costed to the side i was right by my home so i had AAA tow it to my home. It starts and runs great but it revs like you have you foot on the floor. I have replaced The ECU, all vacume lines, cap, wires, it has a new battery i have owned the car for years and have had no problems with it at all, Except for the light switch breaking and i just replaced it. Does anyone have any suggestions What could be the problem?

RE: 1983 240DL Idle problem / throttle Problem
 

I also replaced the fuel injectors with in the last 500 miles.

RE: 1983 240DL Idle problem / throttle Problem
 

throttle position sensor?

RE: 1983 240DL Idle problem / throttle Problem
 

sticking throttle linkage or throttle plate...clean them out really well and make sure the throttle cable isnt sticking

RE: 1983 240DL Idle problem / throttle Problem
 

Check the see if the wire on the idle air motor is loose. Mine did the exact same thing and it was just a loose wire. As soon as I pluged it in the engine ran normally.