Question about 2006 Dodge Sprinter

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Why the preheating light sometimes is on on cold engine and sometimes off on warm

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I'm going to assume you has the diesel version of the Sprinter.

Diesel is just like a good old COX airplane engine.

The engine need to heat up by glow plugs.

You need to turn the key to on position and let the glow plug relay to energize the glow plugs for 5-X numbers of seconds all depend on the temperature.

The temp. sensor on the engine block will take all the guess work out for you.

When the dash indicator goes out then your are ready to start.

This is the correct procedure to start an diesel engine.

Please disregard this post if you has a gasoline version of the Spiniter.

Posted on Jul 15, 2009

  • Sprinterfreak
    Sprinterfreak Dec 27, 2013

    The gasoline engine has no glow plug indicator light


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If it lights a lot of time the engine allready running check your breaklight-bulbs are broken.
Thats another function of that preheat indicator light.

Posted on Jul 25, 2009

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As I understand you can set the preheat functions. It will come on if the temp( Light On) is too cold and the light will be off on warmer days.. Can also be set to turn on and off when not needed.

Posted on Jul 15, 2009

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