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Date: Mon, 9 Dec 2002 18:48:30 +0100
From: "Per Laursen" <per.laursennopsamSPAMil.dk>
Subject: Re: 95 9K CSE ACC temp drift ?


Hmm - tried this in the weekend (twice) - no change (except for freezingly cold air during the recal sequence :). Also, the recal doesn't always seem to execute properly (no 'climbing sequence' on the LED's to the right) Switching to Off or redirecting to the 'foot heating' position sometimes helps for a while. Guess I'll have to remove and inspect the sensor (seems so easy when you look in Haynes - except that they haven't taken the radio into account). regards Per "Pidgeonpost" <timhnopsamhries45.freeserve.co.uk> skrev i en meddelelse news:asj6t9$umi$1nopsamg3.svr.pol.co.uk... > Interesting! Did a fast run back from Birmingham (England, not Alabama) on > Sunday, and suddenly after an hour or so at 70-80mph the dash vents are > blowing cool air. ACC was set 21C, and upward adjustment to 25C helped a > bit, but then it happened again. Recalibrating the ACC seems to have fixed > it....for now, at least.... > > "Per Laursen" <per.laursennopsamSPAMil.dk> wrote in message > news:3decf7f9$0$71681$edfadb0fnopsamd11.news.tele.dk... > > Thanks - I'll try a little disassembly and check the sensor. Getting a > > similar NTC would probably not be a problem. > > > > I don't suspect the heater core (yet) - no leaks, and it is able to > produce > > nice, hot air (within the first hour :) - also, the thermometer indicates > no > > problems, it has never been above center. > > > > regards > > Per > > > > "Andy Hookins" <andrew.hookinsnopsamamnopsamodata.co.uk> skrev i en > meddelelse > > news:uump9as85vtm2anopsam.supernews.com... > > > I had the same problem but now it seems a lot better: > > > Have you taken the temp sensor out of the dashboard > > > and blown out all the dust that collects in there? To get > > > to it, you have to remove the radio or ACC unit, it pulls > > > out from behind. If you're handy with a soldering iron, > > > you may want to replace the temp sensor. It looks like > > > a diode in a small glass package, but it is actually a NTC > > > thermister, specs are 10Kohm <per.laursennopsamSPAMil.dk> wrote in message > > > news:3dea6d86$0$71652$edfadb0fnopsamd11.news.tele.dk... > > > > I have experienced several times that after running at highway speeds > > > > (140km/h - about 90 mph) for an hour or so, the ACC tends to let too > > cold > > > > air into tha cabin - it gets rather chilly. My theory is that the > indoor > > > > sensor gets heated inintentionally by something. First guess of a > source > > > was > > > > the Radio/CD, which is mounted close to the sensor inlet - but that > > didn't > > > > seem to be it after all (switched radio off for an hour after problem > > > > appears - still too cold). > > > > > > > > Oddly enough - adjusting the temp setpoint a degree or two upwards > gives > > a > > > > few minutes of warmer air, but then we're back to the chilly stuff... > > > > > > > > Problem exists both in summer (25 centigrade) and winter (+1 > centigrade) > > > > outdoor temps. Problem exists both in auto and economy settings > > (winter - > > > > didn't try economy in summer). > > > > > > > > Anybody experienced this ? Anyone know a fix (auxillary CPU fan behind > > the > > > > sensor, maybe ?) I'd hate to have to slow down just because of this :) > > > > > > > > regards > > > > Per Laursen > > > > > > > > (1995 9000 CSE 170hp - really nice car!) > > > > > > > > > > > > > > > > > > > >

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