'84 240Ti idle varies

Oct 02, 2004 2 Replies

Hello,



I could not get my '84 240Ti to pass the emissions test today because it idles too fast - around 1400 RPM.



When cold, it idles around 850 RPM but once hot, it idles faster.



Does this sound like a bad part?



What part?



Or is there a home remedy, sorta like the screw I used to turn to adjust a carburater?



Thank you.



Allan '89 240 196K daily driver '84 240Ti project car from h*ll


First thing to do is clean out the idle speed regulator, it's a cylendrical thing near the intake manifold, has two rubber hoses coming out of one end and going to each side of the throttle body and a cable plugged into the back end. It's a motorized valve that allows air to bypass the throttle plate to regulate the idle speed.

If she's too much trouble I'll take that project off your hands, where can I pick'er up?

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