Check the fuses?
If fuse is really OK, not just looks OK, then the glow plug relay may be
the cause - in which case I'd leave it alone. The light just tells you
when to crank the engine and you already know THAT!
Thanks for the reply.
I checked the fuse box for a fuse indicating it served the preglow indicator
circuit and didn't find one. I also haven't noticed any other electrical
items not working. Do you happen to know which fuse it may be?
The main bus fuse in the glow relay is the fuse. But it will be fine.
HOW did you check the glow plugs? With a ohm-meter? With a test test light?
IF yes to either or both, then you did it wrong. The REAL test is with an
ammeter and a remote
starter switch. Disconnect the big connecter on the glow relay. Connect one lead
of the ammeter to
positive on the battery. Connect the other ammeter lead to one end of a remote
starter button. Get a
long skinny screwdriver and connect the other lead of the remote starter button
to the shank of the
screwdriver. Now touch the end of the screwdriver to the threaded end of the
glow plug. Press the
button and watch the ammeter.
Initial draw will be 25 amps. As it heats up it will drop to 10-15 amps after
If it reads ZERO when you press the button, it is dead.
If it climbs, 30, 40, 50A, it is bad.
And yes, the ohmmeter test will show it is good until you apply current!
Be especially mindful when testing #1 cylinder glow plug, IT is the one that
controls the dash
The glow relay has built-in fault indication: it will make the dash light blink
after starting the
engine if one or more glow plugs are bad EXCEPT for #1. #1 controls the light.
If you are going to replace some but not all of the glow plugs beware,
they come as 9.0V and 9.5V. You don't want to mismatch them. Look on the old
ones for the voltage
style you have.
You may have an open glow plug. Check number one first. They should all
measure less than one ohm. It's probably starting OK because the other 4
are OK but the cylinder with the open glow plug will cake caked up with
carbon. Autozone has them for abour $13.00.
"Jeff" < firstname.lastname@example.org> wrote in message
Thanks for all of the info. I think I will try replacing the #1 glow plug
to see of that helps. I have noticed lately it hasn't ran quite as smooth
as normal right after startup, although it runs OK.
I appreciate all of the replies!
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