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Glow plugs do not work . has 12 volts at the controller on a 06 duramax

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  • Jim Gordon
    Jim Gordon Dec 30, 2013

    dont know where the fuse or relay is as I dont have an owners manual

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  • Cars & Trucks Master
  • 40,764 Answers

Trace the wire back from the glo-plugs and you will come to the relay. Remove the glo-plugs and using short jump leads test across the battery terminals . Place one lead on the wire terminal and the body of the glo-plug on the negative terminal. If good it will heat up immediately . If burnt you will see it.

Posted on Dec 31, 2013

5 Suggested Answers

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Posted on Jan 02, 2017

  • 713 Answers

SOURCE: Which fuse controls the 12-volt outlets. I have

check the accessory fuse, might be labeled as a cigarette lighter or accessory.

Posted on Aug 24, 2009

  • 832 Answers

SOURCE: 1997 VW JETTA DIESEL GLOW PLUGS

You have to replace the defective glow plug. You can test the glow plug without the test light. Just put a wire on the bolted end of the glow plug and connect this to the battery (+) terminal. Then, put a wire around the body of the glow plug and connect this to the battery (-) negative terminal. Hold at this position for a minute or less. Good glow plug will heat up.

As far as the wiring schematics, I will just describe
it. Your ignition switch is connected to the positive
terminal of the battery by way of the fuse in the fuse
box. From the switch it goes to a timing relay before
going to the glow plug terminals. The glow plug body
is screw mounted to the engine block which serves
as the negative terminal. So, as you switch your
ignition, it heats up the glow plug enough to give a
combustion of the atomized fuel in the cylinder piston
of your car causing it to run.

Posted on Nov 21, 2009

  • 5471 Answers

SOURCE: my f250 2002 my stop,turn and 12 volt supply aren't working, fuses are all good, someone said theres a relay un der the hood that controls the trailer plug directionals, is thair any truth to that

Yes. Sign up on the Autozone.com site for free and you can get Powerbox layouts and wiring details. Also check your Relay number on the part. Ford often usues the same Relay for the horn and they can be switched to test the relay.

The turn stalk can also be a problem. All turn lights run to it. Sometimes if you have the Hazard on the column, just pressing the Hazard button will reset the points for the turns. They use a derailer system and sometimes the points do not return back to center.

I hope my solution is helpful.

Posted on Jun 25, 2012

skychief2001
  • 21873 Answers

SOURCE: i have 93 toyota pick up new ac system i put 12 volts to the compresser it works and blows cold but the compresser clutch wont work by itself no 12 volts from the plug in

Did you check the a/c relay and the fuse ? Low pressure switch ?

Posted on Aug 05, 2012

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1 Answer

What voltage do i require to use NGK Y103V glow plugs in my Kaboto 3 cyl engine and will a simple push button type switch be adequate .


glow plugs on a diesel should be the same voltage as the battery voltage that vehicle has , the glow plug relay takes this power and allows it to go to glow plugs for first few minutes of starting , some of them cycle the power on/off several times a minute to control the temp of glow plug but the voltage is allways the power of the battery , this may only not be true on large trucks and tractors (im talkin big !) they use 36 volts to start but then as soon as started cut back to 12 or 24 volts

Mar 04, 2017 | Cars & Trucks

1 Answer

I have 6.6 Duramax.can only afford 4 glow plugs, which cylinders should I install them in


What ever ones are not working...It is not common for all eight glow plugs to quit at the same time.

Jan 10, 2017 | Cars & Trucks

1 Answer

2006 chevy silverado duramax hd 4WD has codes u1016 /c0035/co201/po673/675/677 but runs great


DTC P0671: Cylinder #1 Glow Plug Control Circuit
DTC P0672: Cylinder #2 Glow Plug Control Circuit
DTC P0673: Cylinder #3 Glow Plug Control Circuit
DTC P0674: Cylinder #4 Glow Plug Control Circuit
DTC P0675: Cylinder #5 Glow Plug Control Circuit
DTC P0676: Cylinder #6 Glow Plug Control Circuit
DTC P0677: Cylinder #7 Glow Plug Control Circuit
DTC P0678: Cylinder #8 Glow Plug Control Circuit

Circuit/System Description
The glow plug controller has the ability to perform internal checks, an open or a short to ground on each of the glow plug circuits. If the glow plug controller senses a problem in a glow plug circuit, the glow plug on the affected cylinder will be disabled and the glow plug controller will send an error message to the engine control module (ECM). If this condition exists, the DTC will set.
Conditions for Setting the DTC
The glow plug controller detects that the glow plug control circuit is open, shorted to ground, or has more than 1 ohm of resistance.

Circuit/System Verification
Verify that DTC P064C is not set.
If DTC P064C is set, refer to DTC P064C.
Ignition ON, engine OFF, observe the scan tool Glow Plug 1-Glow Plug 8 parameters. All 8 Glow Plug parameters should closely match each other.
Refer to Testing for Intermittent Conditions and Poor Connections if you cannot duplicate the conditions.
Engine running, observe the DTC information with a scan tool. DTCs P0671-P0678 should not set.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

DTC C0035 Left Front Wheel Speed Sensor Circuit
DTC C0201 Antilock Brake System (ABS) Enable Relay Contact Circuit
The system relay, located within the electronic brake control module (EBCM), supplies battery voltage to all of the valve solenoids and to the ABS pump motor. When the relay contacts close, the EBCM monitors the voltage supplied to the valve solenoids and compares this voltage to monitored ignition voltage.

Jul 30, 2016 | Cars & Trucks

1 Answer

Truck wont start, but only if you hear a click


I copied this from my GM service manual for 1982 6.2 diesel.

1. If the glow plug relay is not clicking on and off then turn the ignition to the RUN position and connect a 12V test light to ground and touch the pink/black wire in the glow plug relay connector.

2. If the light is off repair the open cicuit in the pink/black wire to the splice.If the light is on then touch the light blue at the glow plug relay connector.

3. If the light is off replace the glow plug relay. If the light is on, disconnect the connection at the thermal controller and touch the black wire in the connector.

4. If the light is off, repair the open circuit in the light blue wire from the thermal controller to the glow plug relay. If the light is on repair open circuit in black wire back to a splice. If no trouble is found replace the controller.



You should also get your hands on this Haynes book. Diesel Engine Repair Manual, part # 10330. Excellent coverage on the 6.2 and 6.5. In it, they say that early 82\'s have a hole at the number 2 hole on the pin connector of the wire harness for the thermal controller. this allows dirt in there and corrodes the pins. Remove the connector and clean thoroughly the pin area on the connection and controller. Seal the hole with some silicone. If things are still acting up, replace the wire harness connector.



Hope some of this helps.

Jan 19, 2014 | 1983 GMC C1500

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Need to know firing sequence of glow plugs on a 2006 chevy 2500 hd duramax diesel engine


I am told the glow plugs heat up in "firing" order, also the Duramax uses a intake air heater to warm the air on cold starts.

Jan 08, 2011 | Chevrolet Silverado 2500HD Cars & Trucks

1 Answer

How many votls are the glow plugs in a 2006 doge sprinter


they are 12 volts. the system is all 12 volts,

Dec 07, 2010 | 2006 Dodge Sprinter

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Ignition switch is broken, need to start truck using a button on the steering column...previous owner said he needed to use starting fluid after ignition switch broke...i assume glow plugs are not getting...


you certainly have a problem, checking th glow plugs is easy, 12 volts at the harness to each plug and resistance for the for the plugs, if they are bad it will read open circuit, as for toggling the circuit, bad idea, the original circuit cuts out when the plugs are glowing, without it you willl be constantly burning glow plugs,

Nov 29, 2010 | 1988 Ford F 250

1 Answer

Will not start in morning. Have to use starting fluid. Will not start when key is in start position. Had to install push button direct to starter to turn engine over. Is this a glow plug problem and how...


MOST TIME GLOW PLUG CONTROLLER ON THE REAR OF INTAKE MANIFOLD CAUSES GLOW PLUG PROBLEMS.YOU HAVE TO USE 12 VOLTS TEST LIGHT TO SEE IF POWER GOING TO GLOW PLUG CONTROLLER.IF NOT YOU HAVE BLOWN FUSE OR FUSE LINK.IF POWER GOING TO GLOW PLUG CONTROLLER.THE CONTROLLER IS FAULTY OR THE ENGINE TEMPERATURE SWITCH IS BAD.

Oct 07, 2010 | 1990 Ford F350

1 Answer

Tried to start 2004 f250 with out glowplugs now it wont start. checked fuse still wont start


glow plug light and glow plug are not on same system
check at gow plug conection (top of valve cover both side
follow from relay front valve vover right side silver box)
power 12 volts on all 4 wires in both conector left and right
if not replace relay if 12 volts relay ok (test light clip on ground)
then check glow plug (test light clip on positive ) touch wires going
to glow plug should light up if ok (quick test ) if any fail replaced
if all seems ok look at the oil injection system most common
problem with these motors I have yet to replaced a glow plug or relay

Sep 30, 2010 | 2004 Ford F350

1 Answer

Auxiliary battery use


The extra battery is there because of the glow plugs and intake heater of the duramax. During cold weather both of these systems draw high amperage from the batteries. A single battery will function, but not as well as a pair.

Apr 08, 2009 | 2005 GMC Sierra 2500HD 4WD

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