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OBD II code P0351 replaced coil still getting code, still stalling

Van is cutting off at deceleration or while in gear and stopped. Replaced Idle Air Control Valve. Pulled OBD II code of 351- coil circuit malfunction. Replaced coil but problem persists. Also replaced Cap, Rotor, Plugs, and Wires. What else could be the problem?

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  • jim0264
    jim0264 Jan 12, 2013

    Replaced coil and code is gone but still have a stall issue after engine warms. Will spend the day checking the EGR valve, TPS, and for any vacuum leaks. Wii check EGR valve because it only stalls AFTER it is warmed up.Am not a mech but am ASE certified Parts Specialist(14 years) and I believe at least one vacuum leak exists. Can sometimes feel a skip while it's running.

  • jim0264
    jim0264 Jan 12, 2013

    Also noticed yesterday that when heater is running it will only blow air from the Defrost and bottom vents. Will not switch vents to dash.

  • jim0264
    jim0264 Jan 13, 2013

    Found vacuum leak at throttle body- purge cannister return line. Fixed it but van still stalls some. Noticed butterflies in the throttle body never opened even after van was idling at normal run temperature. If it was a carburator I would think the choke thermostat needed replacing but am not as familiar with throttle body. Should butterflies always remain closed?

  • jim0264
    jim0264 Jan 13, 2013

    Only stalls at idle RPM while in gear. Feels like it's flooding out almost but will restart allthough takes a minute sometimes.

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6 Suggested Answers

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Posted on Jan 02, 2017

  • 99 Answers

SOURCE: Check engine light comes on. p0171 and p0351 codes found

From Lusty Kid:

I know the economy is bad, but change all of the plugs. Check your PCV Valve hose, 150 rottens them out allowing air to be sucked in, thus all kinds of codes.

Depending on mileage. Dismount the EGR valve and clean passages. If you are really good dismount the throtle position sensor body and clean out passages with Choke Cleaner., dismount where the EGR valves connects to the engine, clean out passages. Also check the hose thats behind this mounting to ensure is not clogged. If clogged clean it out. If not replace it. Is about 1.5 ft. long, connects to the PCV Valve Hose.

When is the last time you change your harness. Can't remember??? Replace it. Good Luck

Posted on Dec 26, 2008

  • 1861 Answers

SOURCE: diagram for replacing distributor, cap, rotor...

Replace the coil. It is shorted out. I have changed quite a few coils for the exact same symptom.

The graciousness of a FixYa rating for my assistance would be appreciated.

Thanks for choosing FixYa for assistance.

Posted on Jan 21, 2009

stevehinrich
  • 61 Answers

SOURCE: Vehicle is stalling and back firing

P0108 is MAP sensor
P0351 is ignition coil A cicuit malfunction

Posted on Mar 03, 2009

daves944
  • 1050 Answers

SOURCE: 1991 honda accord "no spark"

There is a relay mounted way up under the dash on the driver side. It is about 1"x1"x2" and it says Mitsuba on it. This is the PGMFI relay, sometimes called the main relay or fuel injection relay. It is very likely the problem. You can buy another one, or there was a bulletin on how to repair it. You need to take it out, pop the cover off, and resolder the cracked solder joints on the pc board that the relays are mounted on. Really not that hard if you have a little soldering experience. If not, just buy another one, about 50 bucks.cb28323.jpg

Posted on Mar 26, 2009

Molson02536
  • 3854 Answers

SOURCE: 95 Chevy C-1500 runs rough at idle and during accelleration

Check the vacuum line to the fuel pressure regulator and check to see if the fuel pressure regulator has gone bad. Give the throttle body a good cleaning and the injectors too. Do not use carb cleaner, it's to corrosive for the gaskets used in the throttle body. The other thing too that would cause this is a stuck or bad EGR valve, Try cleaning the EGR valve too since your cleaning the throttle body. Good luck and keep me posted.

Posted on Jun 11, 2009

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Why does my 88 ford bronco ii hiss when it decelerates from a rev up?


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From a reputable repair website:


P0351 - OBD-II Trouble Code

Auto Systems and Repair

Ignition Coil "A" Circuit Primary/Secondary Malfunction Our emissions expert has put together the following information about the P0351 fault code. We have also included diagnostic procedures you can take to your repair shop if the mechanic is having difficulty analyzing the code.
OBD II Fault Code
  • OBD II P0351 Ignition Coil "A" Circuit Primary/Secondary Malfunction
What does this mean? The ignition coil or coils are responsible for igniting the air/fuel mixture inside the combustion chambers. Without reliable performance from the ignition coil(s) the vehicle will stumble and misfire.
Code P0351 indicates there's an electrical problem in either the primary ( the computer side ) or the secondary ( the spark plug side ) of the Ignition Coil "A" Circuit.
Symptoms
  • Check Engine Light will illuminate
  • Engine idles rough
  • Engine misfires on acceleration
  • In rare cases, the engine may not exhibit noticeable symptoms
Common Problems That Trigger the P0351 Code
  • Defective Ignition Coil(s)
  • Defective Spark Plug(s)
  • Intake Manifold Vacuum leaks
  • Carbon buildup in the Throttle Body air passages
  • Defective Idle Air Control Valve or Electronic Body
Common Misdiagnosis
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  • Spark Plugs replaced when cause of the malfunction was a vacuum leak

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When airconditioner is turned on, engine will not idle up, engine shakes violently and stalls. Gas consumption is bad. Is it due to electronic fuel injection , alternator or computer box? Throttle body has...


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I think that if it stalls there's a problem with the iacv (idle air control valve) or equivalent. Look for codes stored in the obd-II computer using an obd-II scanner to retrieve codes and meanings.

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B1391 - Oil Level Switch Circuit Failure
C1391 - Not a valid obd code.
U1391 - Not a valid obd code.
Its possible you may have misread this code. If it is B1391 that would be the only code with 1391 for your vehicle.

P0351 - Ignition Coil A Primary / Secondary Circuit Malfunction. The ignition signal from the Powertrain Control Module or Electronic Control Module is sent to and amplified by the power transistor. The power transistor turns ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil secondary circuit.

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P0352 - Ignition Coil B Primary / Secondary Circuit Malfunction.
Same repair info as P0351.

P0353 - Ignition Coil C Primary / Secondary Circuit Malfunction.
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http://www.obd-codes.com/p0440
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