Question about 2002 Toyota RAV4

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I have an engine idling issue. The engine is a 1AZFSE, GDI engine. It uses a throttle by wire system. The issue does not happen all the time, but lets say you are in traffic, & u watch the rpm gauge u will see the needle slightly moving up & down & u feel the feed back on the idling issue through the brake pedal as the engine idling up & down. I did a vacuum leak test but didn't find anything. All that i can think of is if it is electronic issue meaning a voltage problem or there might me a issue with the throttle body. What do you think?

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 1861 Answers

SOURCE: 2004 Toyota Tundra check engine light

Tell your dealer to replace the electronic throttle motor. This is your problem.

Posted on Sep 12, 2008

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localwonder
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SOURCE: 1985 Toyota Pick up- Hesitation/Sputtering at throttle

Sounds like a fluttering fuel pump maybe. that's an interesting problem you have there. water in the tank can do this as well. trash ect....

Posted on Jan 28, 2009

  • 1 Answer

SOURCE: Idle surges after warm up and when brake pedal is pressed

1990 22re same problem surge when pedal was depressed thought it was booster or check valve still didnt fix it i even put a brand new booster on it just to make sure still no fix it finnally went away on its own for about a month now it does it just sitting at an idle with out the brake pedal depressed traced all vaccum lines no problem there and still have no clue

Posted on Feb 21, 2009

  • 2976 Answers

SOURCE: engine wont idle unless you keep your foot on the gas pedal

First, try a new accelerator pump. They're less than $10 and easy to install. On the side of the carburator, near the linkage. It's simple a small rubber diaphragm.

Posted on Mar 15, 2009

  • 19 Answers

SOURCE: poor /no acceleration

THE GDI ENGINE SUFFERS FROM EXTREME "COKING" - DEPOSITS THAT STICK AROUND THE VALVES AND PREVENT PROPER OPERATION, RESULTING IN POWER LOSS. REPAIR CAN BE EXTENSIVE AND COSTLY ESPECIALY IF YOU START TO HEAR A RATTLE ON IDLE. THE FIRST STEP I WOULD SUGGEST IS, TRY USING FUEL ADDITIVES SUCH AS WURTH FUEL/GAS/VALVE TREATMENT THESE ADDITIVES ARE QUITE CAPABLE OF CLEARING OR CLEANING CONTAMINATED PARTS IN TIME.

Posted on Jan 26, 2010

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2005 ford five hundred replaced battery went into engine failsafe mode n will only idle no throttle response I replaced throttle body assembly just sits and idles


try using the scan tool to reset the ECM program
code p 2104 refers to throttle actuator control(TAC) system---forced idle mode ===causes ---wiring--TAC motor ---APP ensor--ECM
code p 2112 refers to throttle control actuatorTAC system---actuator stuck closed ===causes ---throttle body, throttle valve tight/ sticking
or TAC system--circuit malfunction===causes wiring short to positive ---short to ground ---throttle position sensor--- ECM

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the "Reduced Engine Power", problem causes the PCM to disable "Service Stability Control" and "Traction Control" turning on the warning lights to come on for those systems . The reduced engine power is because of a problem with the electronic throttle control system or as GM calls it TAC system . Reduced Engine Power Mode
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© 2017 General Motors Corporation. All rights reserved.



Drive by Wire training Your best bet , take it to a GM dealer

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1 Answer

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idle control valve. bad plug wires and bad plugs will all cause that as well as a air leak in the vacumn hose on galant

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I got code p2176 I changed out the tps still got same problem did not have this problem with other engine just changed engine out now cant seem to get this code off causing the car to rough idle and low...


P2176=Throttle Actuator Control System - Idle Position Not Learned
Did you use all you old sensors,or is some of them from the new engine,I would swap out the IAC sensor or check for wires not hooked up.
If it can't relearn to idle the Idle air control might be different then your old one,but its not registering with the computer

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What the voltage of the TPS and APS should be at


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Nov 16, 2009 | 2000 Mitsubishi Galant

1 Answer

Poor /no acceleration


THE GDI ENGINE SUFFERS FROM EXTREME "COKING" - DEPOSITS THAT STICK AROUND THE VALVES AND PREVENT PROPER OPERATION, RESULTING IN POWER LOSS. REPAIR CAN BE EXTENSIVE AND COSTLY ESPECIALY IF YOU START TO HEAR A RATTLE ON IDLE. THE FIRST STEP I WOULD SUGGEST IS, TRY USING FUEL ADDITIVES SUCH AS WURTH FUEL/GAS/VALVE TREATMENT THESE ADDITIVES ARE QUITE CAPABLE OF CLEARING OR CLEANING CONTAMINATED PARTS IN TIME.

Jan 28, 2009 | 2001 Volvo V40

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How to fix low idle speed


Here is the most common cause of surges and stalls low idle speed, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

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1 Answer

VOLVO S40 SE 2001RPM HIGH


YOU MAY HAVE A IDLE SPEED CONTROL VALVE PROBLEM, CLEAN IT FIRST, THEN DISCONNECT THE BATTERY, FOLLOW THE PROCEDURE I HAVE ATTACHED.

Here is the most common cause of this stall and idle speed issues, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Nov 07, 2008 | 2000 Volvo S40

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