cygnusx1 Posted August 24, 2003 Share Posted August 24, 2003 The 83 Turbo motor that I just finished installing in my 76 Z idles at 1000 to 1100rpm. This seems a bit high. I have the timing set to factory spec. The motor and ECCS is totally '83 stock. It shows about 19-20 in-vac. The motor was out of an automatic and is now with a 5-speed. What should it idle at and how can this be adjusted? I cant seem to find any vacuum leaks anywhere. When I open the oil cap the motor stumbles which seems to be a good sign of an air-tight motor. Thanks. Dave C. http://www.hvmp.com/dc Quote Link to comment Share on other sites More sharing options...
Guest szlash280z Posted August 24, 2003 Share Posted August 24, 2003 are you using the 83 intake manifold and all the goodies that go with it? try adjusting the throttle stop screw underneath the throttle body. That is what I use to adjust my idle. I don't have the computer controlled idle stuff on mine though. Quote Link to comment Share on other sites More sharing options...
Guest bastaad525 Posted August 26, 2003 Share Posted August 26, 2003 Yep throttle stop screw, but szlash makes a good point, if you have all your '83 idle control stuff hooked up on the manifold, the ECCS may thwart any attempts you make to adjust the idle yourself. Or, it may not, but if you adjust it and find it keeps adjust itself, you will know why. Another problem I had, was that the stop screw kept shaking itself loose, and very oddly, kept working it's way UP, causing my idle to increase... I would think it would have shook down/out, not up... on my TB it's nearly impossible to tighten the lock nut that is on the stop screw, the screw head diameter is larger than the lock nut, meaning you cant get a socket over it, and it's very hard to get to with a regular wrench. I just pulled the screw completely out and put some blue loctite on it, threaded it back in, and now my idle stays put Oh by the way all the vacuum hoses that hook up to my idle control stuff on the manifold are disconnected. Quote Link to comment Share on other sites More sharing options...
Guest szlash280z Posted August 26, 2003 Share Posted August 26, 2003 my screw was very difficult to turn, my lock nut wouldn't turn, so luckily my idle stays put. Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted September 7, 2003 Author Share Posted September 7, 2003 Yup little throttle stopper screw was too high. I turned it down a bit and locktite keeps it there. It idles nicely now. Duh, I figured out why it idled high....the motor was from an automatic! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.