Date: Tue, 19 Jun 2007 11:22:51 -0000 From: tobyfieldnospaml.com Subject: Re: 97 9000T temperature gauge stays low
On your car the temperature guage is controlled by the ECU unlike the earlier 9000's where it is a real representation of the engine temperature. The guage will normally sit at the 8 o'clock position when warmed up and will not go higher unless there is a problem. On 19 Jun, 05:12, "bozo" <b...nospam.net> wrote: > 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 > > <Echo088...nospaml.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?
