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Glow Plug Relay Update????
by
Kneale Brownson
on 30 May, 2008 05:41
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#1
by
Possum79
on 30 May, 2008 14:04
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I read somewhere that usually you can tell by the color of the text on the relay. I think they said white text was fast. Slow is some other color. Also by the nuts on the glowplugs themselves. Something about aluminum or brass nuts. I'm trying to figure out where I read that at.
Don't quote me on any of that untill I find where I saw it.
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#2
by
Possum79
on 30 May, 2008 14:23
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Red letters is fast system and plugs will have a brass nut. White lettering is slow system with aluminum nut on the plugs
http://vincewaldon.com/images/documents/protraining_diesel_77-83.pdfPage 37 of the pdf file.
Courtesy of vincewaldon.com
Check out other stuff on that site for excellent vw how-to.
Of course I would recommend getting the part number from your relay and cross referencing it to fast systems.
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#3
by
Kneale Brownson
on 01 Jun, 2008 03:47
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Vince's book says the slow system powers the glow plugs for 90 seconds, while the fast system lasts just 15.
My car's glow plugs do not have brass nuts, but the power to the plugs goes off within 15 seconds after turning on the key.
Mine also fail to light up a test light if I disconnect the wiring to the plugs and put the light between the battery positive terminal and the plugs.
So maybe I have slow plugs on a fast relay??? And they've died???
Sure is a PITA to get to the plugs. Do you ordinarily have to pull all the plumbing to the injectors in order to change the glow plugs?
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#4
by
Possum79
on 01 Jun, 2008 16:28
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Ive yet to change mine so i do not know how difficult it is. Supposedly you can do them with out removing stuff but its tuff. The hard part is the two behind the injection pump. I would take you relay out and get the number from it. Someone can probably look it up to see if its fast or slow. I would assume if there was a cross problem in the fast to slow it would be a fast plug with slow relay. cheaper to change.
I plan on buying the Bosch kit from autohaus to do mine. 80 bucks for relay and plugs if its not on backorder.
are all the plugs not lighting the test light? you have to completely disconnect the bus bar and wires to it in order to test. Also make sure your light actually works. :wink:
edit: I can also say i know my system is on a slow relay but my light only stays on for 15-20 seconds. I read that the fast is 7 seconds while the slow is up to 60 seconds. It all depends on the temp sensor and things. It is wired to the relay to prove if it needs the plugs or not.
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#5
by
Kneale Brownson
on 02 Jun, 2008 18:01
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Well, I pulled the relay (PITA) to find it has the white lettering, which Vince's booklet says means it's the "normal" slower relay system.
Where can I get the slower glow plugs?
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#6
by
Vincent Waldon
on 02 Jun, 2008 18:52
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Bosch Duraterms are compatible with both systems.
Actually, the "fast" system is so named because you can start "faster", but the plugs stay on for quite a bit longer (3 minutes or more) to improve driveability with a cold engine.
Pretty sure the entire "slow" system is NLA from VW anyways... get the Duraterms and away you go.
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#7
by
burn_your_money
on 02 Jun, 2008 18:53
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Duraterms are the way to go. They are self monitoring so you can't burn them out from them being on too long.
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#8
by
Possum79
on 02 Jun, 2008 19:13
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Pretty sure the entire "slow" system is NLA from VW anyways... get the Duraterms and away you go.
Actually the slow relay is avaliable which is stupid to me, just the plugs are not avaliable.
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#9
by
Kneale Brownson
on 03 Jun, 2008 05:47
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Sources for the Duraterms?
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#10
by
burn_your_money
on 03 Jun, 2008 10:02
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#11
by
Kneale Brownson
on 03 Jun, 2008 11:32
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Got 'em on order from these guys:
http://www.autopartswarehouse.com/Had to make direct contact because their website catalog is less than complete. US price a buck higher or so than the Canadian website.
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#12
by
burnt_servo
on 03 Jun, 2008 12:46
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Duraterms are the way to go. They are self monitoring so you can't burn them out from them being on too long.
so a person could make a manual push button type system to power the glow plugs and not worry about them being on too long and burning out ? ... aka suzuki diesel conversion ......
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#13
by
Possum79
on 09 Jul, 2008 16:39
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just thought I'd chime in late to say the autohausaz.com part 80010 is a duraterm plug. I emailed autohaus about it because I just was thinking i need some.
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#14
by
gigaz2
on 09 Jul, 2008 17:47
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Duraterms are the way to go. They are self monitoring so you can't burn them out from them being on too long.
so a person could make a manual push button type system to power the glow plugs and not worry about them being on too long and burning out ? ... aka suzuki diesel conversion ......
well yes, that would work.
the timer system is only there for convenience, who would want to follow a complicated starting procedure when you can just wait for the light to go off to turn the key?
well, Im thinking about putting a similar switch on the engine compartment, together with a start button, because I spend more time in the engine bay than behind the wheel anyway
