Question about 1993 Toyota Pickup

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93 toyota pickup DTC CODE 24,25,31

So i ran a diagnostic on my truck and got dtc code 24,25 and 31.. I know whats they mean but i cant figure out how to fix it.. i dont know alot about cars but i am trying to learn.. My truck every now and then when i am in a intersection or parked, the rpm will go back and forth between 1 and 2.. I am trying to get my truck fix. Please help. DTC 24- Intake air temp. sensor signal DTC 25- Air-fuel ratio Lean DTC 31- Air flow meter signal (Vacuum sensor signal)

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  • Omar Ibarra Feb 18, 2013

    i replaced the mass airflowmeter and truck drives alot better but engine light still poped up, aftera whole dayof beingoff ... pleass help i want to fix this truck

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Dont clean your throttle body yet..........Theres an idle air control valve{ black round top about the size of a 50cent piece} on the back of the throttle body, cleaners will ruin it. It mounts with 2 screws facing the back of the motor. This is what controls your idle.........

Posted on Jan 01, 2013

  • Dave Jan 01, 2013

    Dont clean your throttle body yet..........Theres an idle air control valve{ black round top about the size of a 50cent piece} on the back of the throttle body, cleaners will ruin it. It mounts with 2 screws facing the back of the motor. This is what controls your idle.........

  • Omar Ibarra Feb 07, 2013

    I changed 02 sensor and now it doesnt go back and forth anymore.. Soo that took care of that problem

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Posted on Jan 02, 2017

SOURCE: Hi, I've sent my toyota

To have so many different codes at the same time indicates that the first place to start looking is the wiring harness itself. Locate the MAP (manifold air pressure sensor - code 31) and IAT (inlet air temperature sensor - code 24) connections. Disconnect and reconnect each sensor a few times and check that the connecting socket and pins are clean and free of corrosion - the codes indicate intermittent breaks. Check all fuses are clean and well mounted. Examine wiring harness for chafing, abrasion and signs of wear. Any intervening connections between the wiring harness and electronic control unit (ECU) need to be checked over and should be free of oily grime.

Posted on Nov 17, 2010

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SOURCE: 99 4runner misfire

make cranshaft gear has not spun under timing cover ive seen it happen before

Posted on Dec 31, 2008

  • 1 Answer

SOURCE: 93 TOYOTA HILUX ( 22RE ) STARTS THEN STALLS AFTER 1-2 MINUTES

Try cleaning the throttle body.Check the air-gap for the pick-up coil inside the distributor assembly(use a brass feeler gauge)
Check valve clearances if needed(possible tight intake valve adj.)
Check base timing(follow instr. via under hood label)
Hope this helps.

Posted on Mar 17, 2009

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8_14_2012_6_35_17_pm.gif

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