Date: Tue, 3 Dec 2002 21:15:25 -0000 From: "Pidgeonpost" <timhnopsamhries45.freeserve.co.uk> Subject: Re: 95 9K CSE ACC temp drift ?
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!) > > > > > > > > > > > >
