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Old 04-27-2011, 05:11 PM #1
toYOta22 toYOta22 is offline
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Check Engine Light Issue

1995 4Runner V6 3.0
Just had the engine rebuilt at 151,000 miles. The issue is that the engine runs like a beast for the first 15 minutes or so. Then when the check engine light kicks on, the power decreases dramatically (hills that I could normally drive 75 over, I am now doing 55 over). The computer says that issue could be an engine knock, but there isn't one. So my question is: can the check engine light have an effect on how the vehicle runs? If so, should I just disconnect the wires?

Feel free to ask for more information if you need it.

Thanks, Eric
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Old 04-27-2011, 05:20 PM #2
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I would be that it is either a bad knock sensor or faulty wiring to the sensor. If the ECU thinks there is a knock/ping it will re**** the timing to prevent pre detonation. This results in some pretty bad performance.\

EDIT: Disabling the check engine light will not fix any problems.
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Old 04-27-2011, 05:37 PM #3
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Thank you alot.

Eric
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Old 05-01-2011, 12:44 AM #4
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I've got the exact same problem man... they've already gon through and replaced the knock sensor, wires, and even the ecu... still trips the light and i lose a bunch of power. dumped soo much effin money into this i shouldn't have this prob. feel for ya breh. i'll post again if i figure it out
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