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Changed engine control mudule with a used one car trys to strat now but dont

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Depending on the car this can sometimes be mated to the bcm and/or require a relearning of the key related anti theft system. On a gm product this general requires you leave the key in the on position for up to 30 mins or until the "theft" system indicator stops flashing.

Posted on Oct 20, 2013


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Posted on Jan 02, 2017


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Why my alternator dont charge at normal engine idle thanks

You have rvc/regulated voltage control, that circuitry is in your pcm. I'm not saying the pcm is faulty, at the moment, I don't know? You also have a battery temp sensor in the battery tray housing, that might cause problems?
Check for applicable charging system trouble codes, if you haven't already.

Mar 30, 2017 | Jeep Cars & Trucks

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Hi when i start my 2004 toyota corolla 1.4i in early in morning its goes off if i dont reff it.i need to leave the car strat for atleast for ten or fifteen minutes when car is warm it sound very smooth but...

Look into the following:
Weak cylinder compression. (Check valve clearance)
Clean the throttle body and re-learn idle speed control system.
The abnormal engine noise is often called piston slap and it is heard at cold start when the ambient temperature is near to zero. This is absolutely harmless.

Oct 12, 2013 | Toyota Corolla Cars & Trucks

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Where is the ignition control mudule 1998 3500

Is it a one ton truck, or a Blazer with a V6 engine ??
The one ton truck with a 350 engine should have a coil and module mounted on the intake near the distributor.

Sep 21, 2012 | 1998 Chevrolet Blazer

1 Answer

1989 chevy cavalier z24 strats but stalls rapidly

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

Jul 26, 2012 | Cars & Trucks

1 Answer

Where is the transmission control module on a 1993 Mazda Protege DX?

powertrain control mudule is behind the radio another way you can get to it is inside the car as you sit down in the drivers seat look straight down on the right side up by the gas pedal there is a panel you have to remove its kind of hard to get off theres some screws holding the panel in place once you remove this panel you may gain access to the powertraincontrol mudule.

Aug 09, 2011 | 1993 Mazda Protege

1 Answer

I have an '84 Ford with a 351 windsor in it. The problem is its not starting. I've check the plugs, coil, distributor, and even the fuel pump. To me it acts like its not getting fuel but it is. Have good...

If you have points? Change the condensor. If no points? Change the ignition mudule . Exilerator pump diaphram on the carb might be bad. Change the Fuel FILTER. Yeah you will see fuel going into the carb at times but it might not be enough. Go for the easier stuff i have written you. Then if you have to? try them all. If all else fails? Do a compression check. Anything 15% difference you have an internal engine problem. The igniton mudule at times will be a big silver square box bolted on the firewall and sometimes the the right fender.
Good luck
Please leave me a great feedback on here.

Jan 08, 2011 | Ford F-150 Cars & Trucks

1 Answer

Engine runs very rough

if is runnig the PCM is not the problem,change the coil pack or the crancshaft position sensor.
the PCM is very expensive(500+) but they hardly go bad. PCM(power control mudule)

one more thing,have you tried the spark plug wires?

Sep 08, 2009 | Chrysler Voyager Cars & Trucks

1 Answer


Use this thorough testing procedure to troubleshoot this issue.

Check for broken wires or loose connectors around the fan circuit. Inspect connectors at the fan motor, relay, sensor or heat sensitive switch, and the Electronic Control Module (ECM)--your car’s computer control system. Also, make sure to check for a possible blown fan fuse. These are common and overlooked troublesome spots that may cause a fan to fail.
Run and bring the engine to warm temperature. With the engine running, use a voltage test light to check for power to the motor fan. Be extra careful and make sure to keep your hands and tools away from the belt, fan or any other engine moving parts. If voltage is reaching the fan motor, the test light should glow.
Turn off the engine after you see the light glow. Apply direct voltage to the fan motor from your car battery using a pair of spare wires. If the fan fails to operate, replace the fan motor. If the motor operates, your problem is in the motor connector.
Locate the heat-sensitive switch or heating sensor if the fan motor operates with direct voltage and the test light did not glow. You should find the sensor in the radiator, engine block, or thermostat housing.
Measure the resistance across the heating sensor with the multimeter. With the engine at cool temperature (engine off), it should register infinite resistance; with the engine at warm temperature (engine off), you should read low resistance. If both readings state infinite resistance install a new heating sensor, that’s the cause of your failing fan.
Check the action of the fan relay if the heating sensor is registering variable resistance. Your service manual should specify the power and ground wires according to color codes and the proper way to test it. If the fan relay fails the test replace it with a new one.
Check the connections going to the ECM after you determine the fan relay is working properly. If you find broken wires or loose connectors, make the necessary repairs. If you suspect a defective ECM take your vehicle to a service shop for a computer analysis. In most cases, the ECM is rare to be the cause of a failing fan. The above steps should take you to the root cause of your problem and help you fix the cooler fan.

Aug 27, 2009 | 2003 Mitsubishi Outlander

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