Question about 2007 Mazda B2300

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What to do with Engine codes P1295, PO507 & PO511 Idle is to high, intermited, Would you change out the IAC or the TPS

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Please check up this for a possible solution.

Posted on Nov 10, 2010

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I would look for a vacuum leak before changing the iac valve.

Posted on Nov 10, 2010

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3 Answers

COULD THE GAS PEDAL CABLE CAUSE THIS CODED PO507 to be high


Extracted from Engine-Codes.com

Code P0507

Possible causes

- Dirty throttle body

- Electric throttle control actuator misadjusted or damaged

- Faulty Electric throttle control actuator

- Intake air leak

- Poor electrical connection to the Intake Air Control (IAC) valve


help.jpg What does this mean?

Tech notes

If there are no intake leaks, clean throttle body, adjust engine idle and erase engine code. If the code comes back you may have to replaced the Electric Throttle Control Actuator (Motor) to repair the problem.



There is a factory service bulletin for the following Chevrolet models:



2006-2008 Chevrolet Trail Blazer

2007-2008 Chevrolet Avalanche

2007-2008 Chevrolet Express

2007-2008 Chevrolet Silverado

2007-2008 Chevrolet Suburban

2007-2008 Chevrolet Tahoe

Chevrolet Factory Service Bulletin OBDII Code P0507


What does this mean?

When is the code detected?

Thi P0507 code sets when the Powertrain Control Module (PCM) detects an engine speed outside of the Idle Air Control (IAC) valve range of control.

Possible symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

- Engine hard to start

- Rough or erratic idle speed

P0507 Chevrolet Description

The Idle Air Control (IAC) valve is a Powertrain Control Module (PCM) controlled stepper motor located on the throttle body. The stepper motor drives a valve pintle which protrudes into a passage that bypasses the throttle plates. The PCM commands the IAC valve pintle to extend to decrease the idle speed. The bypass air flow is reduced and the idle speed decreases as the pintle approaches its seat. The PCM retracts the IAC valve pintle away from its seat to increase the idle speed. The retracting of the IAC valve pintle allows more air to bypass the throttle plates. One of the PCMs uses for the IAC system is to maintain a desired idle speed. This DTC sets when the PCM detects an engine speed outside of the IAC\'s range of control.





Read more: http://engine-codes.com/p0507_chevrolet.html#ixzz3ObdI2chF

Jan 11, 2015 | 2001 Chevrolet Blazer

1 Answer

Idle rpms to high


it is all the throttle position sensors. look for disconnected wires, anything that you forgot to put back on, reconnect, etc. maybe unclick them and reclick them to make sure they are connected properly. I don't know what kind of oil change you did but don't do it again, lol!!! could be unrelated failure of TPS as well.

Feb 27, 2014 | 2004 Nissan Quest

1 Answer

High idle o n a 1996 chrysler concorde. have change the tps and the idle air control valve. i think its a vacum line but i dont know which one. which one s effect the idle


High idle is usually caused by a vacume leak. First place to check is the cold air intake manifold. All hoses, throttle body, and sensors. Throttle Position(TPS), Mass Airflow(MAS), Idle Air Control Motor (valve) IAC. Controls Idle speed

A malfunctioning throttle system can cause both a high idle as well as an engine stall.

A dirty air intake or cracked air intake tube is often the culprit.

How to Fix an Engine High Idle in Under 15 Minutes

Oct 16, 2011 | 1996 Chrysler Concorde

1 Answer

I have a 2004 Jeep grand cherokee straight six. I replaced the TPS sensor & IAC sensor. recently experienced high idle while in park, lack of power, and engine light came on with a code of P0121? ...


Depending on the system, P0121 is Throttle/pedal position sensor/switch A circuit range/ performance problem.

Did the TPS have slotted mounting holes? If so it may need to be adjusted.

Sep 04, 2011 | 1996 Jeep Grand Cherokee

1 Answer

I changed my IAC valve on my 2004 ford taurus dohc, and now the rpms sit between 2000 and 2500. I checked it with a scanner and it gave me the code p0511....How can i fix this?


CODE PO511 - IDLE AIR CONTROL VALVE CIRCUIT MALFUNCTION. TAKE VECHICLE TO FORD DEALERSHIP LET THEM RELEARN THE IDLE AIR CONTROL VALVE TO THE PCM. ITS GOING TO COST $35.00 TO RESET.BUT CAR NOT GOING TO IDLE CORRECT UNTIL NEW PART REPROGRAM TO THE PCM

Jul 27, 2011 | Ford Taurus Cars & Trucks

3 Answers

I changed the intake manifold on my 1997 gmc safari van that has the 4.3L engine because of a coolant leak. Now the check engine light comes on. it puts out 3 codes ( PO102 ) ( PO300 ) and ( PO507). What...


you may have broke a gasket 0n the manifold and you now have a vacuum leak explaining the high idle. also check the iac sensor it may be stock partly open or sticking

Sep 25, 2009 | 1997 GMC Safari

1 Answer

Engine iddle speed need adjusting


You cant adjust it. Your car has a tps sensor " throttle position sensor " and a iac idle air control. these are both on the throttle body. is the check engine light on? The best way to check them is on a scanner at places like auto zone they will let you use one for free. and will help you do it. first check the codes if any then look at live data scroll down till you see tps and look at its values rev the motor up and it should change values are 0% to 100% no throttle to full throttle. at idle it should be 18 to 26 or so. if it doesnt change or its at a high number and no gas is being given then its bad. also look at the iac and see if it changes as well. you can also google the resistence values for each and ohm them out. It does sound like a bad tps. try that first , and the tps is easy to change

May 25, 2009 | 2003 Toyota Avalon

1 Answer

Fault codes, p0102,p0122,po507


po102--maf sensor, could be a bad air cleaner and not letting air into engine, po122--tps pedal position sensor low, replace or adjust tps sensor,or wiring,po507--idle control system high input. for this you can take off idle air control, and clean out carbon from were it mounts on engine. it is just before throttle body at end of air intake hose, it is black. do not push on pintle on end of valve when cleaning, use a old toothbrush to clean carbon off of valve, use carb cleaner but do not soak valve in liquid of any kind. good luck!!

Mar 20, 2009 | 1999 Chevrolet Malibu

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