Stalling on steep inclines...idle speed?

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Author Message   brian friend Posted on Monday, February 18, 2002 - 11:33 pm:    I've been stalling on steep inclines. Could it be my idle speed adjustment? Brian Friend   Eric Brodis (Broder) Posted on Monday, February 18, 2002 - 11:48 pm:    Mine too. It does it when I've been going down a steep hill(>35 deg). However, after a few min. it idles fine. Not sure what what the problem is any there is. 95 disco 84k miles   brian friend Posted on Wednesday, February 20, 2002 - 10:40 am:    97 disco se7 97k miles here   brian friend Posted on Wednesday, February 20, 2002 - 11:33 am:    Hey all, I turned my idle adjustment screw open about a 1/4 turn to see if that would aleviate my stalling problem. On steep inclines under heavy load the truck lurches and the rpm slutter between 1,2 and 3k rpm untill it dies. Any ideas? Brian Friend 97 se7 97k miles   muskyman Posted on Wednesday, February 20, 2002 - 12:08 pm:    does it do it on a full tank ?   brian friend Posted on Wednesday, February 20, 2002 - 03:02 pm:    Yup.. Full Tank. Very frustrating.   Randall Smith Posted on Wednesday, February 20, 2002 - 06:17 pm:    When the engine is stalling you should check for any possible vacuum leaks (hoses etc which are downstream of the throttle). And you should check the base idle speed, base timing and the stepper motor. A good test for the stepper motor is to turn the A/C on and off, and there should be no significant change in idle rpms. Now to speculate about why you're stalling on a steep incline: Perhaps there is some dirt or water in your gas tank which is causing no harm until you drive over the side of a cliff, which stirs it into the fuel line. You may also want to check all the major electrical connection points, which may be corroded or loose. A sudden shift in the weight could cause an electrical failure. Not likely but possible on iffy connections. Randall   brian friend Posted on Wednesday, February 20, 2002 - 09:14 pm:    Randall, Where is the stepper motor located? That sounds like it might be the problem. brian friend   Moe Posted on Wednesday, February 20, 2002 - 09:36 pm:    Brian, look in the tech section. You could clean and reinstall and then see if there is some improvement http://www.discoweb.org/faq/stepper.htm   Anonymous Posted on Wednesday, February 20, 2002 - 10:37 pm:    Ah hah--- Moe..that section sounds like it could be my problem. Thank you for the link. I will try it and let you all know if that solved the problem. brian friend   brian friend Posted on Friday, February 22, 2002 - 12:34 am:    Hey all....the stepper motor was the problem. Removed it..cleaned it with carb cleaner and reinstalled. Works like a charm now. I apreciate al the help. Brian Friend 97 se7 colo springs