Date: Sat, 20 Feb 1999 17:34:46 -0500 From: "Trollhattan Auto Parts, Inc." <bobnopsamrtroll.com> Subject: Re: Gas Caps & Idle
Hip82; Hip82 wrote: > Today, I flunked NJ emissions for the gas cap. Not wanting to disgrace my > '87 900T with a rejected sticker, I ran to Walmart and picked up a Stant gas > cap. I passed the test, but... > > Now it idles sometimes at 1200, sometimes at 1000, and sometimes at 800. It > doesn't surge, it just picks one of those values and stays there. Then at > the next time to idle (i.e., next stoplight), it will idle at a different > one of the 3 values, but constantly. > > Obviously, the gas cap has something to do with it, so I'll replace it with > a Saab OEM, or whatever's recommended. I don't believe the cap is at fault, however, I would always recommend OEM parts. More than likely the old cap was not sealing properly and this was hiding the fact that your charcoal can is restricted and is causing an over pressurization of the fuel tank... > > > But I'm curious why this happened. Does it have something to do with the > pressurized gas tank and the AIC? Yes... Although you could just have a coincidental problem with the AIC valve. Try removing the cap and seeing if the problem goes away, if so Charcoal Can is most likely the culprit... > > > Could it be a symptom of some other component needing replacement or > adjustment? Yes see above... If you need -any- parts pricing, please do not hesitate to call on us either bobnopsamrtroll.com, or visit us on the web directnopsamrtroll.com ONLINE ORDER FORM: http://www.cybertroll.com/saabfrm.htm ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^