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2001 4Runner dying computer?

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Old 05-20-2013, 12:18 PM   #1
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Thumbs down 2001 4Runner dying computer?

I took my 4Runner over to my mechanic today because it has been randomly giving me problems with acceleration. When I push the pedal down from a stop light or turning sometimes it just sits there for 5-10 seconds before actually accelerating. The techs could not reproduce the issue (because it's so random) and told me it's most likely a dying computer, which would cost me $2,300 to have a new one installed. No CEL.

Has anyone here had this issue before? If so, are there other things to try before replacing the computer?

Thanks in advance,
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Old 05-20-2013, 05:50 PM   #2
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There's so much else that could cause hesitation. When was the last tune up? Is the throttle by wire system working properly ( I think 2001 and newer had it) You'd need to hook up a scanner or something like an ultra gauge to watch the throttle position, engine load, a/f read out, so much else
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Old 05-20-2013, 06:12 PM   #3
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i have a 2003 tacoma do that a couple of months ago. it was throttle by wire. the throttle body was bad. i highly douby your computer is bad and 2300 dollars is a rip off for a computer. i just bought a used computer for my 2000 tacoma for $100. they need to get it in condition with the scan tool hooked up and monitor the throttle position sensor when it happens even if they need to keep it for a day or two.
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Old 09-12-2013, 02:45 PM   #4
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After a few months of dicking around with everything from vacuum hoses to wiring harness connections the issue was too simple:

Clean the butterfly valve. Yeah... mine was a little dirty:


No more issues!

Last edited by roadrich; 09-12-2013 at 02:46 PM.
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Old 09-12-2013, 08:31 PM   #5
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HOLY BUILD UP BATMAN! well, that would do it.
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Old 09-14-2013, 12:23 AM   #6
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The ECM is covered under the toyotas customer support program. It went into effect 8\7\13 and ends 8\7\16. I had my throttle body replaced at no charge. Read my post about my p1126 cel. It covers the throttle body, ECM, TPS, and 2 other things I cant remember. Unlimited milage.
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Old 09-14-2013, 03:33 AM   #7
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things like this, its almost always something simple. glad to hear those a-holes didnt get their 2300$ for a ˟˟˟˟ty diagnosis. what a bunch of stupid pricks jumping to the worst case scenario like that.
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