Question about 1999 Toyota RAV4
Thermostat and anti-freeze has been changed. ran the motor for 5 minutes and neither fan came on. the temp gauge was still at normal temp but im pretty sure at least one fan would come on within 3 minutes of starting the engine. the car began overheating on my daughter and immediately pulled over and called me. to get it home, i topped off the fluid, bypassed the sensors and ran one fan directly off the battery. she said a friend said the thermostat was bad a few months earlier so i changed it. but i dont think he realized the fans werent working. my daughter travels only very short distances so it never really gave her problems.
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Posted on Jan 02, 2017
Yes if it hydraulically operated it could be because the pump for the fan is bad. If I am not mistaken the fan is run off of the power steering pump correct. check and make sure the pump is working correctly. I have not seen a hydraulic motor on a car I know they put them on a lot of diesel trucks like humvees and some Chevy diesels but not on a car. Most are usually electrical. I know on humvees with a hydraulic fan they have a fan controller check this and make sure it is working right you can unplug the controller and the fan should stay ingaged and turn faster.
Posted on Oct 05, 2009
Hello, jimmy_grant1 and thank you for asking your question on Fixya!
Here is a simple process that will walk you through a few steps that will pinpoint the overheating problem on your 1994 Toyota 4Runner, without even using any tools. It has helped millions of people, and I am certain that it will help you, because I wrote it for people in your exact situation.
How to diagnose an overheating 1994 Toyota 4Runner
Pay attention to the block test part of the instructions.
Get more tips and tricks from a professional about your vehicle from: twitter.com/acoates23234
Thanks for the vote, and good luck!
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Posted on Jan 13, 2011
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