Re: Rpms will sit at 1500!! - Saab 900 Bulletin Board - Saabnet.com
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Re: Rpms will sit at 1500!!
Posted by JohnK (more from JohnK) on Tue, 21 Sep 2004 11:34:47
In Reply to: Rpms will sit at 1500!!, Saab900man(Ryan), Mon, 20 Sep 2004 19:26:21
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I would check the temp sensor on the head. The resistance drops as the temp climbs. Do a search on temp sensor or NTC and you might find the resistance specs or take a look at townsendimports.com tech docs. I think that the resistance should be about 2k ohms when cold and drops to 300 ohms when hot, but I forget exact temp vs ohm scale.
If this sensor is bad high idle rpm when warm is typical. Clean the connector/plug to see if that helps.
TPS should click just off idle and you should have continuity between contact 1 and 2 at idle(center to one of the outside pins. Continuity between the center and other pin should be at full throttle.
posted by 208.208.152...
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