Honda CRX was built from Honda Civic platform and shared many components with the Civic. All Honda CRX models have a mechanical fuel pump that can be easily located within the engine bay, making fuel-pump replacement much easier than on some newer cars.?æ
If you go to this site, it will provide the service manuals for you 89 crx. You can find almost anything and everything that you will ever need to know. http://hondatech.info/downloads/Auto/Manuals/CRX/
its in the front by the hoses, its in the left hand of the engine (top of the radiater to the engine theres three bolts, take hose off then you can see it, u have to put the termostate in the right way or your crx wont run right
If you are talking about the coolant temperature switch that turns the fan on when the coolant reaches the right temperature, then mine it is located in the bottom of the radiator directly under the fan.