I would suggest you invest in a repair manual. It cost around $12 at most auto parts stores, and will contain the info you need to complete this repair and many others. It will pay for itself with this one repair
First, remove the thermostat housing. Then grab the thermostat by hand and remove it.
Replacing a thermostat on a 1999 Oldsmobile Cutlass is very easy to do. First you will find the thermostat by following the upper radiator hose. It is under the exhaust crossover. The thermostat has two 13 mm bolts holding it in place. Take the bolts off to remove the thermostat and replace with a new one.
The thermostat is located where the hose leaves the engine to go to the top of the radiator. You unscrew the bolts holding the hose mounting to the engine. There you find the thermostat.
remove old thermostat and replace with new thermostat and gasket
The oxygen sensor on the 1999 Oldsmobile Cutlass Sierra is located on the lower exhaust. If you need to replace it, they are available for about $20 online.
you can't you have to replace it!
can i reset it or replace it ,where is it on the car
It is quite easy to change the thermostat in your 1990 Cutlass. Remove the thermostat housing retaining bolts. Remove the thermostat from the housing. Reverse the process to install the new thermostat.
Yes, you do.
how do you replace the headlight switch on a 1993 cutlas ceria*
maybe this will help,,, i just replaced the water pump,heater core,thermostat,battery,alternater on my Oldsmobile and found this site to be very helpful even has pictures AutoMedia.com maybe you can find your answer there good luck
The piston or spring on the thermostat could be stuck.