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Old 11-22-2012, 10:34 AM
pwogaman's Avatar
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Intersting glow plug light failure.

On my 87' 300TD the instrument cluster glow plug light stopped working.

It has a good bulb, and the line from the relay LA pin to it is good - lights up with direct jump to 12v +. All the glow plugs ohm out acceptably to within one or two digits of each other, and the car starts right up when cold.

The only thing that is left is the power to the LA pin on the relay itself. I'll have to try swapping out the relay with a known good one to confirm.

Anyone encounter the same problem?

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Old 11-22-2012, 11:52 AM
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cho cho is offline
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Quote:
Originally Posted by pwogaman View Post
On my 87' 300TD the instrument cluster glow plug light stopped working.

It has a good bulb, and the line from the relay LA pin to it is good - lights up with direct jump to 12v +. All the glow plugs ohm out acceptably to within one or two digits of each other, and the car starts right up when cold.

The only thing that is left is the power to the LA pin on the relay itself. I'll have to try swapping out the relay with a known good one to confirm.

Anyone encounter the same problem?
I did when experimenting with different GP brands,... leveling to
one brand restore the thing.


.

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