glow plug controller
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Senior User
Joined: Dec 2003
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From: central california
Thanks Dave
I got lucky the cheap meter prevailed all the plugs showed between .5 to .9 I will not get to finish the job until tuesday or wed. so hopefully I can report then that everything is working right.
I got lucky the cheap meter prevailed all the plugs showed between .5 to .9 I will not get to finish the job until tuesday or wed. so hopefully I can report then that everything is working right.
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From: central california
well I got it put back together I had another detour the nut on the fuel line that goes from the filter to the IP was stripped so I had to make up a new fuel line. My glow relay is still not cycling right. all the glowplugs checked out ok I replaced the glowplug harness and I replaced the the solenoid on the glowplug relay. I did have a bad conection where the two hot wires come off the fuse box to the glowplug relay the wires got very hot . I respliced the wires together and it fixed that problem. maybe I got another bad relay. I turn the key on the wait to start light comes on for about 8 to 10 seconds then goes off the relay will not cycle if I start the truck it goes off right away if I wait the glowplugs will continue to heat for about another 10 seconds give or take. if I disconect just 1 glowplug the relay will cycle. I dont know what else to do!
Lead Driver
Joined: Jan 2005
Posts: 7,782
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From: Huntington Indiana
The controler is temperature sensitive both the external and internal temps. The colder the outside tmep the longer it should stay on. It doesn't run a certain amount of time just the internal temp of the cylinders is what controls it. Once the temp of the cylinder is correct then the controler shuts off the power. If you ran the engine for a few minutes then the controler will not turn on until the internal temp has gone down.
New User
Joined: Nov 2007
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From: Otatwa On Canada
Paul Tie again
I read all these and No one seeme to say HOW the TIMER Works .
Is there a Time delay relay with R and C ?
OR does it depend on the Parallel resistance of the Glow Plugs that there is a Bi metalic strip that heats up?
OR
What is it ?
before I take the whole thing off\ and replace the wjole thing with a Starter Solenoid and a PUSH BUTTON and count to 10 YEA???
Thanks
paul Tie
I read all these and No one seeme to say HOW the TIMER Works .
Is there a Time delay relay with R and C ?
OR does it depend on the Parallel resistance of the Glow Plugs that there is a Bi metalic strip that heats up?
OR
What is it ?
before I take the whole thing off\ and replace the wjole thing with a Starter Solenoid and a PUSH BUTTON and count to 10 YEA???
Thanks
paul Tie
Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
Originally Posted by Paul Tie
Paul Tie again
I read all these and No one seeme to say HOW the TIMER Works .
Is there a Time delay relay with R and C ?
OR does it depend on the Parallel resistance of the Glow Plugs that there is a Bi metalic strip that heats up?
OR
What is it ?
before I take the whole thing off\ and replace the wjole thing with a Starter Solenoid and a PUSH BUTTON and count to 10 YEA???
Thanks
paul Tie
I read all these and No one seeme to say HOW the TIMER Works .
Is there a Time delay relay with R and C ?
OR does it depend on the Parallel resistance of the Glow Plugs that there is a Bi metalic strip that heats up?
OR
What is it ?
before I take the whole thing off\ and replace the wjole thing with a Starter Solenoid and a PUSH BUTTON and count to 10 YEA???
Thanks
paul Tie
Normally I only press the switch for seven seconds, although in ottawa, it might get a little colder than the south coast of BC, so 10 seconds is safe on a cold start. For a warn start, you will find that you really don't need it if the engine is even luke warm.
Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
No need to take the relay out you have in there now.
Remove the white wire from it's terminal.
Attach a wire to that terminal and run it inside the cab.
Mount a momentary switch at a convenient location and attach the wire from the relay to one terminal.
Attach a wire to the other terminal of the momentary switch and run it to a good electrical ground.
Installation is complete.
To operate, turn the key to ON.
Push the switch for 10 seconds.
Start the engine.
As an after thought, there is a connector near the oil dip stick where the engine harness plugs into the chassis harness.
On one end of the connector there are two large guage wires (glow plug circuit power supply wires), yellow I think is the color.
Look at the connector very close for signs of overheating.
Unplug it and check for corrosion inside the connection.
Corrosion in that connection will drop the voltage to the glow plug relay/controller and make the glow plug cycle do funny things.
Remove the white wire from it's terminal.
Attach a wire to that terminal and run it inside the cab.
Mount a momentary switch at a convenient location and attach the wire from the relay to one terminal.
Attach a wire to the other terminal of the momentary switch and run it to a good electrical ground.
Installation is complete.
To operate, turn the key to ON.
Push the switch for 10 seconds.
Start the engine.
As an after thought, there is a connector near the oil dip stick where the engine harness plugs into the chassis harness.
On one end of the connector there are two large guage wires (glow plug circuit power supply wires), yellow I think is the color.
Look at the connector very close for signs of overheating.
Unplug it and check for corrosion inside the connection.
Corrosion in that connection will drop the voltage to the glow plug relay/controller and make the glow plug cycle do funny things.
New User
Joined: Nov 2007
Posts: 6
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From: Otatwa On Canada
Many thanks That is exactly what I wanted to know as I did not fancy all that REACHING OVER the dirty engine and not knowing what I al looking for .
many thanks
but the way Original replaced the OLD DUAL MASS 10inch clutch flywheel with a LUK single flywheel and I have an extra one which I can sell for say 600$ Canadisn + Shipping this would include the Flywheel + 12in PPlate and disc .
just in case you know oe some one who need it .
Thanks again
paul
many thanks
but the way Original replaced the OLD DUAL MASS 10inch clutch flywheel with a LUK single flywheel and I have an extra one which I can sell for say 600$ Canadisn + Shipping this would include the Flywheel + 12in PPlate and disc .
just in case you know oe some one who need it .
Thanks again
paul
Thread Starter
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From: central california
Bigredtruckmi I think where Im getting hung up is not the time that the glow plugs heat. ever since I had this truck after I start it the glow plug relay would cycle on and off for a sort time and now it will not do this. unless I disconect 1 glow plug it does not matter which 1.
Thank you for your service to our country
Thank you for your service to our country
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Thread Starter
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Senior User
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From: central california
Thanks Dave I may end up going that rout but I would like to get it right if I can.
The two big yellow wires did get very hot but it was not at the relay it was where the harnnes plugs in by the fusebox just over the drivers side wheel well it actually melted the plug I removed those two wires from the plug and spliced them back together so they are now separet from the plug heat problem gone. there is however signs of heat on the side of the relay that goes to the GP that big S shap piece of metal that goes from the solenoid to the glow plug wires.
The two big yellow wires did get very hot but it was not at the relay it was where the harnnes plugs in by the fusebox just over the drivers side wheel well it actually melted the plug I removed those two wires from the plug and spliced them back together so they are now separet from the plug heat problem gone. there is however signs of heat on the side of the relay that goes to the GP that big S shap piece of metal that goes from the solenoid to the glow plug wires.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
I would loosen the nuts on the metal strip and check for corrosion at those connections as well.
Resistance is what times the glow plug cycle.
Any corrosion or loose connections alter the resistance.
Resistance is what times the glow plug cycle.
Any corrosion or loose connections alter the resistance.
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Senior User
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From: central california
I cleaned up the metal strip and it made no differance. I think Im going to give it a rest for a while then in the next month or two I will replays the whole relay.
Thanks to all for there input. when I finally replace the relay I will post my resaults.
Thanks to all for there input. when I finally replace the relay I will post my resaults.
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Joined: Nov 2007
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From: Otatwa On Canada
I believe it should be 10 secs if so that is OK if it does not start perhaps its the Plugs ,
By the way 10 seconds is a long time use a stop watch you will be surprised.how long it is
Most timers seem to be 2 to 3 seconds when they fail on the older timers
By the way 10 seconds is a long time use a stop watch you will be surprised.how long it is
Most timers seem to be 2 to 3 seconds when they fail on the older timers
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Joined: Nov 2007
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From: Otatwa On Canada
Hi Gabu Ski
That strip I believe is a Stainless steel resistor which drops the voltage fro 12 to about 9 when all the g plugs are on.
From what I am told IF what you want is to increase teh ON time for the plugs .
You have to runa hot wire form 12 voltsa to the relay coil through apush button and thenyou can keep it on for 10 seconds
That strip I believe is a Stainless steel resistor which drops the voltage fro 12 to about 9 when all the g plugs are on.
From what I am told IF what you want is to increase teh ON time for the plugs .
You have to runa hot wire form 12 voltsa to the relay coil through apush button and thenyou can keep it on for 10 seconds
New User
Joined: Nov 2007
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From: Otatwa On Canada
Hi DAve Sponagle
Your info was right on and I can now start my 7.3 OK bUt many of the dash lights do funny things with the if key on and off and I wondered if by passing the timere and going to the yellow wire which is what I did will do some othe harm
Thanks for you info very good
Paul
Your info was right on and I can now start my 7.3 OK bUt many of the dash lights do funny things with the if key on and off and I wondered if by passing the timere and going to the yellow wire which is what I did will do some othe harm
Thanks for you info very good
Paul