i have a 1993 z28 camero lt1 motor and 6speed trans. got car last summer. and ever since then my fans dont come on unless i turn my a/c on. thats not normal operation so if anyone has any advise it would help big time! thanks..... jake z28[sm=nxsmile.gif]

[IMG]local://upfiles/12409/7FCC7D0927F24798A1394F1DAD0AD9D9.jpg[/IMG]

 

Check the engine coolant temp sensor (ECT) & wiring from sensor to PCM, including connectors.
http://shbox.com/1/temp_sensor1.jpg
For a quick test, pull the connector from the sensor & strap a 70 to 100 Ohm resistor across the leads. Turn on engine, if fans go on the ECT is bad; if fans do not go on then the wiring is bad.

 

i'll give that a try and get back at you pete, thanks for the info..... jake z28[sm=nxsmile.gif]

[IMG]local://upfiles/12409/C282097296A54E4A86A4E9923CDEC043.jpg[/IMG]

 

hey pete just wanted to let you know that test worked like a charm. i put a 100ohm resister acrossed leads thenpowered motor fans came right on. now i just got to get a new ECT sensor, thanks again...... jake z28 hit me back keep in touch[sm=nxsmile.gif]

[IMG]local://upfiles/12409/F1778062A18B47E49A06FA623782D66A.jpg[/IMG]

 

whats up pete i put ECTsensor in today and i'll be a son of a bit@# the fans still acting the same as before i put the new one in. the fans only come on when i turn the a/c on still. I dont get it when i put the resistor in the fans come on, then i put new ECTsensor in now they dont work unless i turn on the a/c any advise please hit me back...... jake z28[sm=nxsmile.gif]

 

they dont turn on well if you have a code they will stay on. idk sorry good luck