Question about 2002 Ford Taurus

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2002Ford taurus 98,600mi engine light is on Read out codes P303 cylinder #3 misfires detected and code 1506 IAC valve over speed error how to repair? Car stumbles at start up very sluggish will not pick up speed at highway ramp, engine light begins flashing

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Did you ever do a tune up? If not you need to change the spark plugs pvc if you have one,some do and some dont anymore.also change the spark plug wires.This is where you have to start,even if your car was in a shop.Then you go from there if this does not fix your problem take to a good repair shop.

Posted on Jul 23, 2009

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Posted on Jan 02, 2017

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Car sputtering badly. Codes P303 n P102 show on diagnostics and have replaced both parts associated with these codes,PLUS, new fuel filter, engine still sputtering badly.


Hi,

I hope I can help with this. This could mean the engine spark plugs or plug is the issue. Also check the exhaust pipe. White smoke indicates a coolant issue. Check your coolant reservoir. Black smoke indicates a Fuel issue. Blue is an oil issue. Also, speaking of your spark plugs there very well could be a misfire.

the code P303 could be cylinder 3 misfire
P102 the mass air flow sensor which is on the air filter cover. It's an electrical part and is sensor. Please check these and let me know.

Jul 28, 2016 | Cars & Trucks

1 Answer

Check engine light code p2196,p2197, po300 ,304,305,306,p2 ,Im freeking out.


P0300 Random/Multiple Cylinder Misfire Detected P0301 Cylinder 1 Misfire Detected P0302 Cylinder 2 Misfire Detected P0303 Cylinder 3 Misfire Detected P0304 Cylinder 4 Misfire Detected P0305 Cylinder 5 Misfire Detected P0306 Cylinder 6 Misfire Detected P0307 Cylinder 7 Misfire Detected P0308 Cylinder 8 Misfire Detected P0309 Cylinder 9 Misfire Detected P0310 Cylinder 10 Misfire Detected P0311 Cylinder 11 Misfire Detected P0312 Cylinder 12 Misfire Detected P0313 Misfire Detected with Low Fuel P0314 Single Cylinder Misfire (Cylinder not Specified) P0315 Crankshaft Position System Variation Not Learned P0316 Misfire Detected On Startup (First 1000 Revolutions)

Read more at: http://www.obd-codes.com/trouble_codes/
Copyright © OBD-Codes.com
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P2195 O2 Sensor Signal Stuck Lean Bank1 Sensor 1 P2196 O2 Sensor Signal Stuck Rich Bank1 Sensor 1 P2197 O2 Sensor Signal Stuck Lean Bank2 Sensor 1 P2198 O2 Sensor Signal Stuck Rich Bank2 Sensor 1

Read more at: http://www.obd-codes.com/trouble_codes/
Copyright © OBD-Codes.com http://www.obd-codes.com/p0002

May 07, 2015 | 2006 Ford Taurus SEL

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

2 Answers

I installed a timing belt on my 03 kia sedona. a piece of the cover broke off and caused the cam to jump 6 teeth. i reset the timing am now getting code p300 p303 and p305. guess it is time to replace the...


yeah, it is time to replace your cylinder, because the P300 meansRandom/Multiple Cylinder Misfire Detected, the P303 means Cylinder 3 Misfire Detected, the P305 means Cylinder 5 Misfire Detected.
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Oct 29, 2012 | Kia Sedona Cars & Trucks

3 Answers

I have a 97 Ford Explorer AWD 8 cylinder. Check engine light comes on and I get code p303. Vehicle bucks at times, uses lots of gas. Believe it may be 02 censor, spark plugs and wires tested ok. Any Idea


code says #3 cylinder misfire, check the coil pack for this cylinder to see if its got spark, bad o2 sensor will spit another code, its most likely the coil

Mar 17, 2011 | 1997 Ford Explorer AWD

1 Answer

My ford taurus SE 1999 have 3 codes P1504, P1507 and P1131


DTC Description Possible Causes Diagnostic Aides P1504 - Idle Air Control (IAC) Circuit Malfunction This DTC is set when the PCM detects an electrical load failure on the IAC output circuit.
  • IAC circuit open
  • VPWR to IAC solenoid open
  • IAC circuit short to PWR
  • IAC circuit short to GND
  • Damaged IAC valve
  • Damaged PCM
  • The IAC solenoid resistance is from 6 to 13 ohms.
    • IAC valve stuck open
    • Vacuum leaks
    • Failed EVAP system
    • Damaged PCM
  • The IAC solenoid resistance is from 6 to 13 ohms.
P1507 - Idle Air Control (IAC) Underspeed Error This DTC is set when the PCM detects engine idle speed that is less than the desired rpm.
  • IAC circuit open
  • IAC circuit short to PWR
  • VPWR to IAC solenoid open
  • Air inlet is plugged
  • Damaged IAC solenoid
  • Damaged PCM
  • The IAC solenoid resistance is from 6 to 13 ohms
  • Disconnect IAC valve and look for no change in engine rpm as an indication of a stuck or damaged valve
P1131 - Lack of HO2S-11 Switch, Sensor Indicates Lean A HEGO sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.
  • Electrical:
    • Short to VPWR in harness or HO2S
    • Water in harness connector
    • Open/Shorted HO2S circuit
    • Corrosion or poor mating terminals and wiring
    • Damaged HO2S
    • Damaged PCM
  • Fuel System:
    • Excessive fuel pressure
    • Leaking/contaminated fuel injectors
    • Leaking fuel pressure regulator
    • Low fuel pressure or running out of fuel
    • Vapor recovery system
  • Induction System:
    • Air leaks after the MAF
    • Vacuum Leaks
    • PCV system
    • Improperly seated engine oil dipstick
  • EGR System:
    • Leaking gasket
    • Stuck EGR valve
    • Leaking diaphragm or EVR
  • Base Engine:
    • Oil overfill
    • Cam timing
    • Cylinder compression
    • Exhaust leaks before or near the HO2S(s)
A fuel control HO2S PID switching across 0.45 volt from 0.2 to 0.9 volt indicates a normal switching HO2S.

Mar 16, 2011 | 1999 Ford Taurus

2 Answers

After going over 40mph the check engine light goes on n it gives the code 440


How did you read that code on your car? A 92 Accord is supposed to give you pre-OBD honda codes, which are all below 100. Please check the code again and re-post it.

Jan 04, 2011 | 1992 Honda Accord

1 Answer

Engine light code P1507: ''manf cntrl veh spd idle speed control auxiliary inputs'' and P0306: ''cylinder 6 misfire detected''. this ranger resitates press gas. where do i start?


P1507 is "Idle Air Control System Underspeed Error". This code indicates a problem with the Idle Air Control (IAC) valve assembly, harness wiring for the IAC or the Powertrain Control Module. So checking the IAC next is the most logical step.

Oct 07, 2009 | 1998 Ford Ranger SuperCab

2 Answers

Check Engine light code 1506


Dear Sir,

P1506 error refers to Idle Air Control System Overspeed Detected.
So solution is check your Air control system wires,and check air control speed once again.
If this not solves your problem back with the result,leave a feedback we happy to help you.


Have a nice day

Good luck


Sep 16, 2009 | 1995 Mazda 626

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