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1998 Toyota RAV4 Question: No heat or A/c

 

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gbgoul, 2.0L 4 Cylinder, Eustis, FL, December 30, 2010, 11:55
 Rookie

I've already submitted a question concerning the RAV4 overheating - engine light comes on - thermostat was replaced - sensor replaced - gas cap is ok - still overheats. When the thermostat and sensor was replaced - car ran ok for about a week and then wham - engine light back and on and temp gauge shot through the roof - when the thermostat was changed - there was no A/C???? - don't know if it's all related HELP!!!

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  • Answer #1

    December 30, 2010, 12:40
    Profile_thumbnail
     Master

    Really need to get the check engine code, it may or may not be related to the over heating issue.
    Also, like I said in the first answer, make sure that your cooling fan is working and then do a chemical block test to ensure the head gasket is still sealing properly.

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    gbgoul, December 31, 2010, 06:01
     Rookie

    Will follow through - just got home from work - almost home -I work 54 miles away from my home. When I started my 04 Ford Focus (181k), I noticed that the engine sounded "rough" like it was knocking - I thought I better get that checked out. Made it to the McDonalds - .5 mile away from home - in the take out line and I felt all the power fading - car went dead - I tried to start it got a terrible screech and it wouldn't start again. Electrical ok - could I have thrown a rod - 2 guys help push me to the parking area and said Happy New Year. I thought now this and the RAV4???? Any help ?

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  • Answer #2

    tamaples from Tom's Auto Clinic, December 30, 2010, 12:47
     Technician

    When Engine Computer detects overheat condition it will disable AC System.

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    gbgoul, December 31, 2010, 06:01
     Rookie

    How does the system enable the AC system to come back on?

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  • Answer #3

    January 01, 2011, 18:46
     Master

    Hello gbgoul,
    I agree with dandd. First I'd retrieve the engine's trouble codes registered in the vehicle's computer to properly diagnose the problem that triggers the CEL. Inoperative cooling fan could cause a rapid engine overheat.

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    gbgoul, January 08, 2011, 08:33
     Rookie

    2 relays were changed - car ran fine for first day - 2nd day it ran hot again. I barle==ely made it home - had to run heat at max to get home now what - I'm stumped.

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