temp gauge not working, not sure about fan
 

Hi all,
My son just bought a 1990 civic hatch as a first car.
It had the motor replaced some time ago (used)
I searched the engine number D15B2 and it seems to be the right engine for that time piriod.
But the temp gauge is not working, so we have no idea what temp the engine is running at.
Also I am not sure if the fan is working, we unpluged it and ran power from battery and fan did not come on. Didn't ground though.
Any Help would be Greatly appreciated Thanks dan

Re: temp gauge not working, not sure about fan
 

Depends what do you mean ground - if you placed both battery poles against the right connectors, it should have come on.
Do you hear anything or feel loss of power? DID YOU DRIVE IT without knowing how the temperature is?

Re: temp gauge not working, not sure about fan
 

You have to add power and ground to the fan. The fan is controlled by a grounding relay. check the fan by hooking up power and ground to it. If it does not work. replace with a hayden slimline fan from any autoparts store (youll thank me...they are great and an easy instal). If it works then move to replacing the temperature sensor. if still no fan then you have to change the fan switch sensor aswell.

Re: temp gauge not working, not sure about fan
 

woops... true