December 26, 20196 yr Hello everyone I am looking for advice and help as to fix my high idle issue and problems with my digital speedometer. As far as the high idle problem i will start the car and it will idle at 2000 rpms then when it’s warm it will fall to 1100 rpms and won’t go down from there I have checked for vacuum leaks and the air idle control but nothing sees to work I’d rather not take it to a shop and pay thousands of dollars for something that could be very simple Edited December 26, 20196 yr by Glfanboy9967
December 26, 20196 yr MPFI,but,what year? turbo? Adjust idle speed w/the large vertical brass screw on the throttle body
December 30, 20196 yr Author On 12/26/2019 at 3:33 PM, naru2 said: MPFI,but,what year? turbo? Adjust idle speed w/the large vertical brass screw on the throttle body Naru2 : it is a 1987 Turbo gl 10
January 30, 20206 yr Author Where exactly on the throttle body ? and reference point you could supply would be appreciated
January 30, 20206 yr 1 hour ago, Glfanboy9967 said: Where exactly on the throttle body ? and reference point you could supply would be appreciated I believe he is referring to the vertical brass screw illustrated here... Be sure to verify that your idle air solenoid is working properly, as well as your O2 sensor(s). These give feedback to the ecm to control air/fuel ratio, and you don't want to turn that adjustment screw unless you know that that there are no vacuum leaks or other issues affecting your idle first.
January 31, 20206 yr 1 hour ago, naru2 said: Not quite,but,it is nearby. Much better diagram. Is that adjustment screw capped? Seems like I recall it being covered, so you had to drill the cap and pull it off. I could be mistaken.
February 8, 20206 yr Author Thank you very much for the information got it fixed and the idle is perfect now turns out there was a lose vacuum line too but the idle was still high when I fixed that so I got it perfect at 700 rpms now does anyone know how to fix the digital cluster my speedometer doesn’t work nor does the lit to tell me my diff lock is working
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