Date: Tue, 19 Jun 2007 04:12:10 GMT From: "bozo" <bozonospam.net> Subject: Re: 97 9000T temperature gauge stays low
It is slightly possible that your temperature sensor is expiring - although when mine went (1995 Aero), it was fine one day and the next day the gauge needle simply stayed down at the 'off' position - the sensor I'm referring to is on the transmission end of the cylinder head, and (from memory) somewhat below and behind the connector for the D.I. cassette but in front of the throttle body. There are a few other temperature sensors scattered around the block and head, but this one is the one that, via the trionic ecu, feeds the dashboard temperature gauge - in other words, if it's the sensor, your engine might be hotter than you think and I believe that the fan control may start becoming screwey also. Stupid question, but you do have enough coolant, yes? Assuming your car is a 5 speed and not an automatic, you could do a reboot on the ecu - get up to speed, step on the clutch and, without removing the key, switch off the engine for 10 seconds or so, switch it back on and let out the clutch to restart - that has seemed to reset and solve some peculiar issues with both my previous '91 9kT and also my current '95 Aero. Rick <Echo088880nospaml.com> wrote in message news:1182211889.635591.184640nospam000hsf.googlegroups.com... > On Jun 18, 6:39 pm, "Richard" <rootnospamlhost> wrote: >> <Echo088...nospaml.com> wrote in message >> >> news:1182205366.509271.31400nospam000hse.googlegroups.com... >> >> > Driving my 97 9000T today, on this 80 degree day. I'm noticing my >> > temperature needle sitting about a quarter inch above the blue when >> > I'm going up a hill and expect the needle to be climbing a little. So >> > I continue to watch the needle and it stays about the same. I stop the >> > car and idle to build up some heat -- and the needle still doesn't >> > move (well, maybe a fraction of a millimeter). I shut off the ignition >> > and all the needles fall as usual. Start-up and the needle rises to >> > the same quarter inch above blue. >> >> > I have an 82 deg. thermostat, that I'm wondering if it's stuck and >> > making the fan come on more than usual, or exactly what's going on. >> > Any thoughts on this? >> >> Hi! >> Does the needle indicate a "cold" engine when you first start it? >> Do you have a thermometer to check the real temp of the engine? >> >> Richard > > > Yes, starts off in the blue and moves up to about 1/4 inch above as > the engine warms up (as expected) and seems to stay right there (7-o- > clock) while driving. Sometimes it goes lower, but since I've noticed > this, I can't get above that 1/4 mark no matter what I do, even > letting it idle after driving. > > I usually don't notice how often the fans come on, (my perception > being they always came on as the temperature rises (higher than 1/4 > inch above blue). But when I checked this from outside the car (where > I could hear clearly), they seem to be almost constantly cycling on > and off -- when I'm idling with the gauge reading 7-o-clock, the fan > is on 90% of the time. And it doesn't seem to run once I've shut the > ignition off. That doesn't seem normal to my recollection. Is it? >
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