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What causes no power to coil on a 98Blazer4.3Vortec

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  • Cars & Trucks Master
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Usually a fuse. PCM A or PCM B fuses should be checked. These also control power to injectors, o2 sensors, tps sensors etc. Is the check engine light on when the key is on? You may have a broken/corroded wiring to coil as well

Posted on Apr 07, 2015

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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

James what can I do to check coils on ,2003 accord lx 2.4


Not James, but maybe I can help: Under the dash in the fuse/relay box is the ignition coil relay. This sends battery voltage on the black/white wire to all four coils. With key in on, all 4 coils should have power to them on this black/white wire. If no power, check fuse #2, a 15 amp fuse which sends power to the ignition coil relay, and on to the coils when the relay is energized by the ecu/pcm. Only thing else to cause spark is when the ecu/pcm sends a signal to the coil's Ignition Control Module (housed inside each coil assembly), which controls the primary circuit (the black/white wire), and causes high voltage to the spark plugs.

So check the black/white wire to the coils. If power there with key in on, check for spark at a spark plug when cranking the engine over. If power to coils but no spark, possibly a crankshaft position sensor or cam position sensor giving a bad signal to the ecu/pcm. Good luck.

Sep 01, 2015 | Cars & Trucks

4 Answers

How do I determine what is causing power loss when it can be multiple issues?


U need a new coil. They wear out from heat and age. Also bad plugs put strain on it cause they draw to much currant

Dec 06, 2014 | 2002 Ford Expedition

1 Answer

What would cause me too not get fire from coil through coil wire


No power to the coil from switch or a bad coil. Check power to coil with a test light and with switch on.

Jun 28, 2014 | 1975 AMC Pacer

2 Answers

Ford Escape 3.0 no power to #4 coil


Need to change the coil. Is likely the problem. Sometimes that means replacing the whole coil pack.

Apr 10, 2014 | 2005 Ford Escape

2 Answers

What causes a 2006 F-150 5.4 Triton to misfire?


If it has `coil on plug' ignition,it's probably a coil.If it has coil packs, it's probably a coil pack. don-ohio (:^)

Apr 04, 2014 | 2006 Ford F-150

2 Answers

No spark from ignition coil to start the engine of suzuki vitara16v EFI engine. what is the cause of it


what year? what country? sounds like suzuki G16b engine. is it? or 2.0L?
The reasons are the same basically for G16 or the 2.0L
Both engines have ECU.
Both need good fuses to power ECU and coils.
Both engines need working CMP.
my guess is this is a distributor engien G16b (YOU SAND COIL NOT COILS.)
1: fuses, test the fuses relate to ECM/PCM (3 fuses)
CEL LAMP MUST BE ON KEY ON OR ECU HAS NO POWER.
2: g16B( CRANK FOR 5 seconds), with scan tool connected.
A $50 tool that is indispensable.
P0355 or P340 DTC , bingo, no spark.
or while cranking RPM is dead at 0 RPM.
if all that passes, then check the coil signals. (@ minus term)
The coil has an ignitor in the dizzy and both can go bad.
recap.
power 12v to ECU
CMP working
ECu sees CMP and sends spark to dizzy ignitor.
Ignitor , drives coil, coil makes spark ,engine runs.
nut shell

Mar 09, 2013 | Suzuki Vitara Cars & Trucks

1 Answer

Cranks but won't start



Trouble Code: P0300

Multiple Cylinder Misfire Detected
Possible Causes:


Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects two or more cylinders Erratic or interrupted CKP or CMP Sensor signals Fuel delivery component fault that affects two or more cylinders (i.e., a contaminated, dirty or sticking fuel injector)


Trouble Code: P0302

Cylinder 1-10 Misfire Detected
Possible Causes:


Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector)


Trouble Code: P0305

Cylinder 1-10 Misfire Detected
Possible Causes:


Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector)


Trouble Code: P0351

Ignition Coil No. 1, 2 or 3 Primary Circuit
Possible Causes:


ASD relay power circuit to the ignition coil is open Ignition Coil No. 1, 2 or 3 primary "driver" circuit open or grounded Ignition Coil No. 1, 2 or 3 is damaged or it has failed


Trouble Code: P0352

Ignition Coil No. 1-8 Primary Circuit
Possible Causes:


ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded


Trouble Code: P0353

Ignition Coil No. 1-8 Primary Circuit
Possible Causes:


ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Ignition coil is damaged or it has failed PCM has failedPCM has failed Ignition system problem (coil or plug) in only one cylinder Ignition system problem (coil or plug) in only one cylinder Ignition system problem (coil or plug) in two or more cylinders Vehicle driven with low fuel pressure or while very low on fuel

Jun 06, 2012 | 2001 Jeep Wrangler

1 Answer

2.5 cranks ,has no spark


Check the fuse and relay in the fuse panel for a blown fuse. Then unplug the power wire to coil and test for power to coil. If you are getting power to coil then it will be the coil causing the problem. Use an inline tester to connect between the coil tower and sparkplug wire to correctly see if the coil is putting out fire. Could be bad sparkplug wires or plugs. Hope this will help you.

May 31, 2010 | 1994 Dodge Dakota Club Cab

1 Answer

I have no power coming out of my coil. Is it the


Might be.

Coil is controlled by ground, not power, so you are describing a normal condition.

The crank sensor is a common cause of a "no spark" condition on these vehicles. Other things can cause the same problem though.

Sep 27, 2009 | 1988 Jeep Cherokee

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