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P0351 code have 99 ford escort ignition coil showed to be bad changed and still shows code po351 loses power and jumps some clear code runs fine for 20 mins or so then right back something what to look at for now ?

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Codes for ignition coils are not always accurate

You can get many codes for many cylinders & have one or more
bad coils

I would do a cylinder leak down test, to eliminate a mechanical
valve sealing issue

Then if all valves seal-- smoke the intake for vacuum leaks

PO301,PO351 or Coil A -- are all the same-- cylinder #1

Posted on Mar 25, 2014

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Posted on Jan 02, 2017

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P0351 code loss of power 2.3L08ford ranger,it warms slow and really need to eliminate1~voltage regulator is where?) & 2~ ground through PCM) 3~knowing limits&threashholds{sensorsIGNcircuit}?Ty 0$


P0351 loss of power ? That's not what this code is about . P0351 - Ignition Coil A Primary/Secondary Circuit ,you have a bad coil and possibly a bad coil driver inside the PCM . Do yourself a favor an take your vehicle to a qualified repair shop !
P0351 - Ignition Coil A Primary/Secondary Circuit Description: See the description for DTC P0350. Possible Causes: See the possible causes for DTC P0350. Diagnostic Aids: See the diagnostic aids for DTC P0350. Application Key On Engine Off Key On Engine Running Continuous Memory Coil-on-plug (COP) ignition testing - GO to Pinpoint Test JF . GO to Pinpoint Test JF . Coil pack ignition testing - GO to Pinpoint Test JE . GO to Pinpoint Test JE .
P0350 - Ignition Coil Primary/Secondary Circuit Description: Each ignition primary circuit is continuously monitored. The test fails when the powertrain control module (PCM) does not receive a valid ignition diagnostic monitor (IDM) pulse signal from the ignition module (integrated in the PCM). Possible Causes:
  • Open or short in the ignition START/RUN circuit
  • Open coil driver circuit
  • Coil driver circuit short to ground
  • Damaged coil
  • Coil driver circuit short to VPWR
Diagnostic Aids: Use the 12-volt non-powered test lamp to verify START/RUN voltage at the ignition coil harness connector.
Check the coil driver circuit for open, short to VPWR, or short to ground. Application Key On Engine Off Key On Engine Running Continuous Memory All GO to Pinpoint Test JE .

Feb 18, 2017 | 2008 Ford Ranger

1 Answer

What would cause the check engine light to come on intermittently and constantly flash when it's on? We've changed the coils because it pulled a po351 engine code. very lost. please help. Thanks


A flashing check engine light indicates a misfire. Code p0351 is for the ignition coil primary circuit A problem. Need to know year/make/model for me t help more

Apr 05, 2015 | Cars & Trucks

2 Answers

Still having problems will not run good. 1997 ford 2.0 escort;new plugs&wires coil;fuel pump still codes 0351;


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
  • Ignition coil(s) replaced when cause of the malfunction was a vacuum leak
  • Spark Plugs replaced when cause of the malfunction was a vacuum leak

Dec 21, 2014 | Ford Cars & Trucks

2 Answers

NO POWER REVS UP REAL SLOW SHOWS CODES P0301 P0138 P1687 P0355 PO351


Hi, do you have the 4.7 liter engine with coils on every cylinder? 351 and 355 indicate bad coils on cylinders 1 and 5. You can try moving the coils to see if the problem is the coils themselves or the wiring. If the codes change after moving the coils, replace the coils. These misfires could be the cause of the other codes.


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Feb 23, 2011 | 2000 Dodge Durango

1 Answer

Part po351


p0351
Ignition coil A primary or secondary circuit malfunction

check the spark plugs. see if one is bad. if they are good replace coil pack with a good one and see if it works maybe just one , coil is bad

Sep 16, 2010 | 1997 Ford Expedition

1 Answer

My Lincoln LS 2004 has the Check engine light on and the scan shows 3 problems: P0306, P0351 and P316, do you think these problems can be solved with a mayor tune up?


There is no such thing as a major tune-up

PO306--could be COP Ignition Coil #6 misfiring

PO316--is a misfire on first 1000 revolutions.
You always get that,disregard

PO351--doesn't apply to the LS,disregard also

Aug 11, 2010 | 2004 Lincoln LS

1 Answer

I have a p0351 pending code


P0351 - ignition coil section A-primary or secondary circuit malfunction.Change ignition coil.

Jan 13, 2010 | 1999 Ford Escort

3 Answers

Po351 jeep


p0351 is ignition coil primary circuit this USUALLY means a bad ignition coil use only a name brand coil ,but it could be a bad computer but not very common

Sep 21, 2009 | 1996 Jeep Grand Cherokee

2 Answers

Engine codes


hi !the three codes po353,351 and355 refer to the ignition coil po455 refers to evap emission control leak [LARGE} HOPE THIS HELPS

Jun 14, 2008 | 2000 Dodge Durango

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