90qttro

ok, first post here...need some help on my heater. i've got a 1991 90 20v with some heater problems. doesn't seem like my engine temps are getting hot enough. my oil temp gauge is reading under 100f after the car has been running for 20 mins. my coolant level looks normal. thermostat? if so, which temp thermostat should i replace it with? please help, need heat! heated seats are great, but....

MikTip

Is the radiator fan running?

90qttro

yup! the fan does turn on after a little while...

MikTip

Start the car, leave it in park, let it run until the rad fan comes on.

Then go touch the top of the radiator with your hand, is it warm? Hot?

90qttro

i just tried this and the fan never turned on! the top of the radiator did get hot after 20 mins. of idling... thermostat?

90qttro

also, my temp gauges never really go up. my water temp gauge on my dash doesn't really move and the oil temp gauge doesn't really go up past the 60 degree celcius mark....

Merkin

change thermostat

90qttro

thanks. one other question, do you know which temp thermostat i should go with? should i just go with what is desgnated for my car? or should i go lower? higher? not sure if there is any benefit from going either higher or lower...

Merkin

when in doubt change both, or get the lower temp one.