Date: Sat, 11 Aug 2001 13:15:43 -0400 From: Via Regia <hereslookinnopsamcom> Subject: Re: eratic Idle at Start Up
On Sat, 11 Aug 2001 16:27:04 +0200, "VIKINGMAN" <saabnopsamlixnet._nospam_dk> wrote: >"ciphfer" <ciphfernopsam.net> skrev i en meddelelse >news:Pu9d7.7687$xW7.1926269019nopsamsvr15.news.prodigy.com... >> Hi Guys, >> >> Any help on this would be of great assistance. I have a 1987 Saab 9000 >> turbo. I am constantly being raped by the dealership and I refuse to go >> back. When I start the car after a long rest the Idle goes up and down and >> on some occasions, the engine just stalls. When the car warms up the >problem >> seems to be less noticeable. I am figuring it must be a fuel system >problem. >> I have changed the fuel filter and tested the fuel pump as directed by a >> Saab site but still no luck. I am guessing it may be the 02 sensor, but >> before I attempt to change it I would like some advice. I thank all of you >> all for your help. > >I'm 99% sure that it is your IAC-valve. I believe a cleaning will help a >lot. Also, clean the throttlehousing. The IAC-valve is located under the >inlet manifold - hard case!!! Also, check the tubes going to/from the valve, >as you'll see this symptom, if you have an airleak in them... > >Cheers! > I agree, could also be a vacuum leak. Check for loose or cracked vacuum hoses. If they are original, they may be dry and brittle and need to be replaced. You can buy fancy silicone hoses (more durable) in bulk lenghts on the web for less than 40 bucks and it takes no time to change them. Just do one at a time so nothing gets cross-wired. Heck, you can even buy these hoses in an array of spiffy colors. I believe that http://hosetechniques.com is one supplier on the web. If I am not mistaken, you will need 3.5 millimier width, and 25 feet or so should suffice to do the whole car.
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