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Gary
Gary, ASE Certified Technician
Category: Oldsmobile
Satisfied Customers: 17035
Experience:  over 25 years as a GM master tech
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Olds alero: I HAVE A 2002 ALERO WITH A 2.2L ECOTEC ALL FUSES

Customer Question

I HAVE A 2002 ALERO WITH A 2.2L ECOTEC ALL FUSES GOOD EXCEPT #55 HAS NO POWER OR GROUND,RELAYS GOOD REPLACE COOLANT TEMP SENSOR CHECKS FANS BOTH GOOD.CHECK PLUGS TO FANS GET GROUND ONLY ON PASSENGER SIDE FAN BLACK WIRE,NOTHING ON DRIVER SIDE FAN CHECK HIGH PRESSURE SWITCH GET GROUND ON BLACK, 5.1V ON GRAY AND 0.0 ON RED WITH BLACK STRIPE WHAT IS LEFT TO CHECK ALSO FANS DO NOT COME ON WHEN A/C ON
Submitted: 2 years ago.
Category: Oldsmobile
Expert:  Gary replied 2 years ago.
I am sorry for the long waitfuse # ***** is only used for the V6 enginesis your problem neither fan will come on when the coolant temp reaches @ 225 ish ?or the fans will just not come on when the AC is turned on ?
Customer: replied 2 years ago.
Fans do not come on period.
Customer: replied 2 years ago.
Are you reading my question correctly?
Expert:  Gary replied 2 years ago.
yes i am reading it correctly i just wanted to be clear if we had NO fan operation at all at any timedo you have any access to a scan tool to view live computer data and also be able to command on low or high speed fan operation with the scan tool ?
Customer: replied 2 years ago.
No I can only read temperature and codes is there a Manual way to check fan operation
Expert:  Gary replied 2 years ago.
pull out the relay called cool fan 1 if you jump terminal 30 to 87 in the box that relay plugs into will one of the fans run ?
Customer: replied 2 years ago.
Not with car right now will let you know later, do you have a wiring diagram on this system
Expert:  Gary replied 2 years ago.
here you goyou can always get me back through this post with any follow up for free with this question even after you rate us here at Justanswer !