Running without a thermostat valve

[youngrider]

Sori double post again. Browser error na naman.

[jaguarpw]

thanks youngrider. I appreciate ur reply.

By the way last night, I wanted to check if my fans (there are 2 of them) work properly. Upon starting the engine from cold standby, neither fan started. THis is normal since the engine is stil warming up. I turned on the A/C and one fan started rotating. I let the engine idle for several minutes with the A/C on because i wanted to see that the 2nd fan will operate. The temp gauge reached 35%. I drove around the block, but still only one fan was running.

So my questions are: when is the time when both fans will be running? How does each fan function, or how do you call each fan? Aux fan ba ang tawag sa 2nd fan? Because I'm suspecting na isa lang fan ang umandar at that time na nagfail ang radiator ko, or worse, nung pinatay ko ang A/C, patay din ang fan... so all the while, baka nga walang fan talaga kya nag overheat

[DonT]

thanks youngrider. I appreciate ur reply.

By the way last night, I wanted to check if my fans (there are 2 of them) work properly. Upon starting the engine from cold standby, neither fan started. THis is normal since the engine is stil warming up. I turned on the A/C and one fan started rotating. I let the engine idle for several minutes with the A/C on because i wanted to see that the 2nd fan will operate. The temp gauge reached 35%. I drove around the block, but still only one fan was running.

So my questions are: when is the time when both fans will be running? How does each fan function, or how do you call each fan? Aux fan ba ang tawag sa 2nd fan? Because I'm suspecting na isa lang fan ang umandar at that time na nagfail ang radiator ko, or worse, nung pinatay ko ang A/C, patay din ang fan... so all the while, baka nga walang fan talaga kya nag overheat

Yup..looks like the Radiator fan is the culprit. Have it checked. Maybe the carbon brush..maybe electrical..Normally within 3to 5 mins..the fan should kick in.

[mbeige]

Check first if the power cord for the second fan is connected. The cord is just right there usually near the radiator crossmember.

I believe the other fan will only turn on when the engine temperature reaches a certain degree well above normal, close to overheating but just early enough to prevent it. At least that's how I understand them.

[jaguarpw]

Check first if the power cord for the second fan is connected. The cord is just right there usually near the radiator crossmember.

I believe the other fan will only turn on when the engine temperature reaches a certain degree well above normal, close to overheating but just early enough to prevent it. At least that's how I understand them.

The power cord for the 2nd fan is okay. Because when the technician installed the new radiator, he tested it to get the correct wiring connections and correct direction of rotation. So during the installation, I saw the 2 fans running at the same time.

Perhaps ur right about the 2nd fan starting at a predetermined higher temperature. Only now, I have no idea of testing if indeed it does work.. assuming that under normal driving conditions, I could never reach that kind of temperature.

[youngrider]

The Main Cooling Fan is connected to the Thermostatic Switch which is usually connected sa radiator. This switch will close (switch on)the circuit if the coolant temp reaches a certain degree and will be off again pag medyo malamig na uli yung coolant.

Usually past half the temp gauge pa bago kick on ang Thermostatic Switch. Sa isa kong kotse just before the Red Line yung isa naman mas mababa ang setting.

Dapat meron thermostatic switch for automatic Main fan control, but you can manually switch it on and off lagyan mo lang ng bagong circuit at manual switch.

Di ko pa kabisado yung control ng low at high speed setting ng Main Fan ko pero palagay ko gamit ito resistor somewhere in the circuit. Mahirap pakialaman computerized kasi.