Question about 2004 Toyota RAV4

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I own a 2004 rav 4 chili edition, all of a sudden one day it started serging and nearly stalling, had to press really ******* the gas to make it move at all. Then it would take off like crazy. Its nev

I tried putting methyl hydrate in the fuel tank as thought it might be water in the gas, didn't help it a bit. Took it to my local dealer and they haven't figured it out as yet. They thought it might be the ECM and sent for another one, put it in Friday , nothing changed, and its costing a lot to try this and that ?

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  • kathy tallen
    kathy tallen Nov 06, 2012

    Thanks everyone for trying to help with my problem, it turned out the mechanic at my local shop figured it out and it was the circuit board that was giving me problems. He repaired that and I picked it up last night and it seems to be running fine now> :)

  • Jamie Alton
    Jamie Alton Nov 06, 2012

    May I enquire, which circuit board was faulty?

  • kathy tallen
    kathy tallen Nov 07, 2012

    The mechanic has in his comments repaired circuit to the ECU and I think he means the ECM , as he said it was directly under the ECM.

  • Jamie Alton
    Jamie Alton Nov 07, 2012

    I just did some research on that particular model and it does seem there is a common issue with the ECU/ECM (same unit on that model), so I stand corrected. There is a website here for your interest, which is a company which specializes in this repair. Anyway. I'm glad your mechanic found the issue for you. What a great guy!http://www.rav4ecm.net/default.files/Pag...

  • kathy tallen
    kathy tallen Nov 07, 2012

    OK thanks I'm going to check that website too for future use !!!

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  • Master
  • 2,101 Answers

Did they check the fuel pressure in the fuel rail. or the throttle position sensor. are there any codes,

Posted on Nov 06, 2012

  • kathy tallen
    kathy tallen Nov 06, 2012

    not sure if the mechanic checked those or not, thanks thought , turned out to be the circuit board, and he was able to repair that, not sure how? But it seems to be running fine now.

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  • Master
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The ECM is usually the last thing in the book to try after everything else. It's also pretty much the most reliable electrical component on that car.

Check spark plugs and high tension wires (spark plug leads).
Check condition of air filter.
Check and replace fuel filter.

After those..:

Check manifold air pressure sensor.
Check MAF sensor.
Check O2 sensor

And then report if none of those turned out to show any faults.
By the way, the MAF and MAP sensors may require an OBD 2 diagnostic computer to read properly.

Posted on Nov 06, 2012

  • kathy tallen
    kathy tallen Nov 06, 2012

    Thanks for the suggestions and glad I didn't have to check all those things although maybe my medhcnic did. It turned out to be the circuit board and he was able to fix it.

  • Jamie Alton
    Jamie Alton Nov 08, 2012

    It's great that you found your issue with little trouble. Well done!

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SOURCE: RAV 4 USer and Service Manual

You can register here and get access to the owners manuals (I would think the service guide/recommendations too): http://www.toyotaownersonline.com/Owners/reg.do

Posted on Oct 03, 2008

  • 1 Answer

SOURCE: 97 toyota rav 4 dies at accel.

Thanks, I remember doing what you said above a few times and it doesn't seem to work.

on a side note: if it was the fuel pump, wouldn't it be hard to cold-start it?

Posted on Nov 27, 2008

co7196
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SOURCE: help opening fuel cap for toyota highlander

turn it to the right and it just clicks? Turn it to the left and it won't turn, right? Well put some muscle into it and make it turn too the left, your dad undoubtedly turned it abot 5 clicks past stop and it's just tight. It will turn, Good luck.

Posted on Jun 03, 2009

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