Question about 1985 Nissan 300ZX

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Can the ecm cause you to get no spark - 1985 Nissan 300ZX

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Yes but check first your distribuitor

Posted on May 07, 2013

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Posted on Jan 02, 2017

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Error Code P0351 for a 2005 Toyota Avalon


Possible causes
Faulty Ignition Coil 1
Ignition Coil 1 harness is open or shorted
Ignition Coil 1 circuit poor electrical connection
Faulty Engine Control Module (ECM)

What does this mean? When is the code detected? Each ignition circuit is continuously monitored by the Engine Control Module (ECM). The test fails when the ECM does not receive a valid pulse signal from the ignition coil. Possible symptoms Engine Light ON (or Service Engine Soon Warning Light) Lack/Loss of Power Engine may be harder to start Engine hesitation Rough engine idle P0351 TOYOTA Description: The ignition system on the vehicle uses individual ignition coils for each cylinder. The Engine Control Module (ECM) controls each ignition coil operation. The ECM sends a ON/OFF signal to energize the ignition coil to create a spark at the spark plug when a spark is required at the cylinder.

May 29, 2017 | Toyota Cars & Trucks

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Can the crankshaft position senor cause high idle on a ford ranger


no --The purpose of the crank position sensor is to notify the ECM when the piston is in the correct position to create a spark for the cylinder.
regardless of the rpms of the engine, it sends a signal to the ECM and in the program of the CPU in the ECM and the ECM decodes to advance or adjust the spark after TDC ( the spark in relation to the ignition timing.)
High idle is cause by the idle speed sensor, MAP,MAV and VAF sensors . have the fault codes read a nd look for such a sensor fault.

Nov 28, 2014 | Ford Cars & Trucks

1 Answer

Jeep troubleshooting free


You need to get some kind of scan tool that can read the data ouput of the efi system while driving on the hills that give you problems.The efi system probably has a spark knock sensor.Reading the data off of the sensor while driving will tell if the sensor is telling the engine ecm to adjust itself for low quality fuel.The engine ecm is programmed to dial back power if it detects spark knock.Running poor quality fuel will cost you many dollars more in the long run.A lean running condition (low fuel pressure,partialy plugged injectors,plugged fuel filter) will cause spark knock under load.Carbon deposits on the pistons(internal engine problems) will cause spark knock.The knock is caused by fuel igniting before the spark plug ignites it-The piston is trying to go back wards.Sometimes there will be a factory reflash for the ecm if many of the engines had the same problem.Try reading on some Jeep forums online.This is a problem for a good auto tech-not your average flat rate parts swaper.If the jeep has had many miles since some maintenance(filters & spark plugs) you might start there before laying out $ for diag.

Aug 29, 2014 | 2007 Jeep Commander 4.7

1 Answer

NO POWER TO SPARK PLUG toyota noah 2003 showing error code p0105, p0110, p0115. some one help me plz.


code p0105 refers to manifold absolute pressure (MAP) sensor/ barometric pressure (BARO) sensor--circuit malfunction===causes --wiring---MAP sensor--BARO sensor--ECM
code p0110 refers to intake air temperature (IAT) sensor--circuit malfunction===causes---wiring ---IAT sensor--ECM
code po115 refers to engine coolant temperature (ECT) sensor--circuit malfunction===causes---wiring--ECT sensor---ECM

Dec 25, 2013 | Cars & Trucks

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Car turns over but wont start also the ecm will not give any information the fuel pump is working but no spark


your ECM may be shot. go to your local Nissan dealer and have them run your VIN number for any campaigns. Your model sentra had a ECM foam campaign where the ECM foam inside of the ECM box gets removed, because of the adhesive that Nissan used to adhere the foam inside of the ECM box. The glue that nissan used is toxic and eats the ECM from the inside. That mey be causing your issues. have the VIN number checked to see if the campaign has been performed/foam removed.

Sep 09, 2011 | 2001 Nissan Sentra

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Trac off light came on and off then stayed on while driving, p0203p0204 p0300 codes when scanned with little machine better read open circuts in both injectors loss of power


P0203 - Injector Circuit Malfunction Cylinder 3

Powertrain Control Module (PCM) or Electronic Control Module (ECM) checks the injectors circuit resistance and monitors the voltage drop during normal operation. The PCM/ECM will trigger the P0203 code when the resistance or voltage drop at the injector #3 is out of specifications.

Causes:
- Open or shorted wiring harness to the injector #3
- Bad injector #3
- Bad PCM/ECM

Solutions:
- If damage, repair injector wire harness or connector
- Replace injector
- Replace PCM or ECM


P0204 - Injector Circuit Malfunction Cylinder 4

Same info as the P0203 DTC


P0300 - Random/Multiple Cylinder Misfire Detected

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crankshaft position (CKP) sensor (POS) signal to vary, Powertrain Control Module (PCM) or Electronic Control Module (ECM) can determine that a misfire is occurring.

Causes:
- Improper spark plug
- Insufficient compression
- Incorrect fuel pressure
- The injector circuit is open or shorted
- Fuel injectors may be faulty
- Intake air leak
- The ignition signal circuit is open or shorted

Solutions:
- Perform Injector Service
- Replace Spark Plugs
- Replace Injectors
- Replace Ignition Coils

Feb 03, 2011 | 2001 Pontiac Sunfire

1 Answer

I have a 1992 gmc sonoma 2 wd 4.3L throtle body i am getting the service engine soon light and I checked the codes and I get number 42- Electronic spark timing bypass circuit or EST circuit is grounded...


CODE 42 Trouble Code 42 indicates that there may be a malfunction in the Electronic Spark Timing (EST) system.
During cranking, the timing is controlled by the ignition module while the ECM monitors the engine speed. When the engine speed exceeds 400 RPM, the ECM sends a BYPASS signal to the ignition module which switches the timing to ECM control. The ECM calculates what the timing should be then "tells" the ignition module via the EST circuit.
An open or ground in the EST circuit will stall the engine and set a Code 42. The engine can be re-started but it will run on ignition module timing.
The conditions for setting this code are:
  • System in BYPASS mode but the ignition module is still controlling timing
    - or -
  • Engine speed > 600 RPM with no EST pulses (ECM controlled timing) going to the ignition module for 200 msec.


Typical causes for this code include:
1) BYPASS line is open or grounded
2) EST line is open or grounded
3) PROM or CALPACK not seated properly in the ECM
4) Poor connections between ignition module and ECM
5) Poor routing of EST harness and/or poor quality ignition wires (EMI induced electrical noise)
6) Faulty or incorrect ignition module
7) Faulty ECM


Thank you for using fixya and keep us posted

Oct 10, 2010 | 1992 GMC Sonoma

1 Answer

I have a Chevy Beretta 1992 that won't start. It has power to the ECM, but no power to the crankshaft sensor or the coil packs. Is the problem in the ECM?


Check for spark,and check for fuel pressure,and check for injector pulse,I hope you are using a digital volt meter,if not,you can blow the ecm,If there is no spark,or no injector pulse,then the crankshaft sensor is the most likely cause for the problem.If there is no fuel pressure,then the fuel pump in the fuel tank is bad.

Feb 27, 2010 | 1992 Chevrolet Beretta

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