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ICQ>
Just a follow-up to my continuing saga of my throttle body cleaning adventure. Yesterday I disasembled the throttle body and cleaned it. I was surprised that it was not as "crudy" as I thought it would be given the car has nearly 140,000 miles on it (1968 245DL). I completely cleaned all parts (soaking them in carb cleaner), dried them, then replaced all the seals and re-assembled; also while I was at it I replaced the flame trap and related hoses. I then carefully put everything back together, checking the linkages of the throttle and made sure the throttle switch "clicked" as the plate moved. Then the PROBLEM! When I started the car it ran up to 1,500 rpm. Even grounding the throttle switch didn't change the idle speed (the idle control knob was fully bottomed out). Grounding the throttle switch (blue/white wire behind the battery) didn't make any difference in idle speed.
One other ("unrelated") problem is that when I took off the air ducting between the AMM and the throttle, I must have shaken the AAM just enough that it died. I confirmed the dead AMM by swapping it with the exact some one from my son's car (same year, model, and AMM part number). This has turned out to be a far more expensive preventative maintenance project than I expected. Any suggestions on how I can get the idle speed back to specifications?
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