>>Hey, I got it fixed thanks to a suggestion from Gary (checksix3). Somehow the idle speed thermistor got unplugged.<< Uh gee, how bout that. Thanx for the plug Walt. I remind you that the thermistor connecter is supposed to have a spring lock to keep it in place. I'd also remind you to strain relief anything thats hard to get at, including the wiring in your doors and everything under your intake manifold. Always think along these lines when you have something opened up unless you want to do the job twice...cable ties and lock washers are cheaper than your labor. (well, maybe not Walt's ;) The warm idle thermistor has a negative temperature coefficent and a fairly linear range from about 40k to 400 ohms from -10C to 100C respectively. As far as the ECU goes, anything less than about 14k ohms (including a short) is ignored and results in an target idle of 775. Anything above appx 200K ohms (including an open of course) is ignored and results in a target idle of appx 2200. The thermistor circuit is always active and is part of the target idle setpoint generated by the ECU. *Any* funkiness in resistance caused by bad connections, etc, presented across terminals 9 and 11 of the ECU will result in idle speed changes. This makes for a very convienent test method in determining proper operation of the idle speed ECU, in additon to the procedure outlined in the service manual. If anyone wants a chart showing idle rpms versus resistance they're welcome to contact me. Yahoo! Groups Sponsor ADVERTISEMENT <http://rd.yahoo.com/M=251812.3856299.5103760.1261774/D=egroupweb/S=170512 6215:HM/A=1754451/R=0/SIG=11tkldm5d/*http://www.netflix.com/Default?mqso=6 0178323&partid=3856299> click here <http://us.adserver.yahoo.com/l?M=251812.3856299.5103760.1261774/D=egroupm ail/S=:HM/A=1754451/rand=623715318> To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .
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