Fan won't turn off !

[drjpb]

I have a 1988 Camry 3.5 V6. A couple of days ago I turned on the ignition and the main cooling fan turned on. I started the car and drove it thinking it would turn off. It stays on constantly. Is there a switch or sensor that I need to check or replace? Can someone tell me where it is and what it is called? Is it a factory part? Thanks.

[new echo owner]

88 Camry with a 3.5L V6? 2.5L V6 maybe?

The coolant fan switch, I think it is somewhere around the thermostat housing in front of the engine or on the radiator, either one of the two, can't remember for sure.

N.E.O.

[drjpb]

Oops, sorry 2.5 V6

[toyomoho]

Are one or two fans on and if so, left, right or both?

[atobe]

or a broken fan relay

[drjpb]

Standing in front of the car it would be the fan on the right, nearest the battery.

[drjpb]

Is there a way to check the relay before I go out and buy one?

[toyomoho]

Does the car have AC, this might be the AC fan. Is the AC on?

Typically the fans are connected to a coolant sensor on the radiator or coolant manifold coming out of the head. They are typically wired so that a disconnected wire will turn them on. Check the wiring, make sure a wiring plug has not come off.

The relays would be in a plastic box, engine compartment.

You can test each relay using an ohm meter, see link below:

http://www.autoshop101.com/forms/hweb2.pdf

The link below has the wiring diagram, click on Figure 25.

http://www.autozone.com/addVehicleId...00c152801cce2c

[Alex_K]

Right fan is extra one as i know. If its not a problem with wiring plug,maybe radiator is too old? =) by the way thermostat is weak place of cooling system.

[Mike Gerber]

Originally Posted by drjpb

Is there a way to check the relay before I go out and buy one?

See if there is another identical relay in the relay box for some non-esential item. If there is, swap the two as a test.

Mike

[drjpb]

Thanks for the comments. It was the fan relay. Works fine now !.