> Max wrote:
>
> '95 E300: all measured between 0.7 and 0.9 ohms, at the six-pin
> connector for the glow plug relay.
What I've found to be the best way to test glow plugs is to measure
the current draw.
> I think I will build a current tester next, using a cheap
> dash-mount amp meter from FLAP
Shell out for a new (or used) GP Relay.
95 E300: all measured between 0.7 and 0.9 ohms, at the six-pin
connector for the glow plug relay.
However, the pre-glow light is telling me there is a problem.
Roughly half the time it won't light during the pre-glow cycle and
then comes on immediat
'95 E300: all measured between 0.7 and 0.9 ohms, at the six-pin connector for
the glow plug relay.
However, the pre-glow light is telling me there is a problem. Roughly half the
time it won't light during the pre-glow cycle and then comes on immediately
after engine start, or it does light as
I was thinking that was the total amperage draw on 5 GPs, in which
case the resistance would be 5x higher on each plug.
No, the initial amperage is quite high. If the fuse were instant
reacting it'd probably blow every time.
-- Jim
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Room temperature resistance should be 0.7 to 0.8 ohm. It will go up
quite a bit as they heat, of course.
Peter
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I was thinking that was the total amperage draw on 5 GPs, in which case
the resistance would be 5x higher on each plug.
--R
On 12/2/13 6:50 PM, Fmiser wrote:
Rich Thomas wrote:
They should show just a few ohms of resistance, like 3 or 4 if
I recall. Zero not good, infinite not good.
Mitc
I thought that a single plug started out over 20 and quickly dropped
as it heated.
Something like that. Cold, the GP's are about 0.7 ohms.
-- Jim
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> > > Rich Thomas wrote:
> > > They should show just a few ohms of resistance, like 3 or 4 if
> > > I recall. Zero not good, infinite not good.
> > Mitch Haley wrote:
> >
> > Don't they draw 20-30 amps when cold?
> > That would imply about half an ohm.
> Rich Thomas wrote:
>
> Divide by 5
Div
On Mon, 02 Dec 2013 18:33:48 -0500 Mitch Haley wrote:
> I thought that a single plug started out over 20 and quickly dropped as
> it heated. Paging Mr Cathey...
I'm not Cathy, but yes, the plugs do draw on the order of 15-20A each when
they are cold.
Craig
I thought that a single plug started out over 20 and quickly dropped as it
heated.
Paging Mr Cathey...
Mitch.
Rich Thomas wrote:
Divide by 5
--R
On 12/2/13 2:09 PM, Mitch Haley wrote:
Rich Thomas wrote:
They should show just a few ohms of resistance, like 3 or 4 if I
recall. Zero not goo
Divide by 5
--R
On 12/2/13 2:09 PM, Mitch Haley wrote:
Rich Thomas wrote:
They should show just a few ohms of resistance, like 3 or 4 if I
recall. Zero not good, infinite not good.
Don't they draw 20-30 amps when cold?
That would imply about half an ohm.
Mitch.
__
Rich Thomas wrote:
They should show just a few ohms of resistance, like 3 or 4 if I
recall. Zero not good, infinite not good.
Don't they draw 20-30 amps when cold?
That would imply about half an ohm.
Mitch.
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They should show just a few ohms of resistance, like 3 or 4 if I
recall. Zero not good, infinite not good.
--R
On 12/2/13 12:15 PM, Larry T wrote:
Hi Gang,
I tried to test the GP using my 12v battery with the GP removed
since i had already pulled it - it didn't even get warm -- i then
If they represent an open circuit, they work as well as a blown light bulb.
Mitch.
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Hi Gang,
I tried to test the GP using my 12v battery with the GP removed
since i had already pulled it - it didn't even get warm -- i then tested
it as many ways that i could think of using my DMM - zero continuity, (I
tested between the threads and the probe as well as the threaded
connec
Thanks for the suggestion -- I'm not sire it will work on my 300D with
the GPR under the dash. //But I'll read your commment and see if I can
apply them to my 240D, Will save the directions for my 300D although i
have done the WSM tests on it successfully. Never hurts to have
alternatives...
> Larry wrote:
>
> I was wondering - I'd like to test the GPs on my 240D - would it
> be acceptable to hook them 1 at a time to my battery charger? I
> read the archives about testing GPs and the point was made that a
> GP might test good with a meter when cold - but can fail when it
> heats up
Thanks Craig! Sounds good. I really appreciate your help -
Larry
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On 11/23/2013 3:01 PM, Craig wrote:
On Sat, 23 Nov 2013 12:16:48 -0500 Larry T wrote:
I was w
I test all of the old ones I pull from the car with this method. I also test
the new ones before putting them in the car. Last time I did this, 3 of the 5
still "glowed", just as brightly as the new ones.
Michael E. Esh
231-286-2344
> On Nov 23, 2013, at 12:16 PM, Larry T wrote:
>
> I was w
On Sat, 23 Nov 2013 12:16:48 -0500 Larry T wrote:
> I was wondering - I'd like to test the GPs on my 240D - would it be
> acceptable to hook them 1 at a time to my battery charger? I read the
> archives about testing GPs and the point was made that a GP might test
> good with a meter when col
I was wondering - I'd like to test the GPs on my 240D - would it be
acceptable to hook them 1 at a time to my battery charger? I read the
archives about testing GPs and the point was made that a GP might test
good with a meter when cold - but can fail when it heats up - if I use
my Battery ch
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