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Car Electronics and Lights
Chevy Suburban
Ford Explorer XLT
Turn Signals and Hazard Lights

Why would the AC and turn signals work when the engine is off but not when it is running?

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Wiki User
2004-08-20 15:54:29
2004-08-20 15:54:29

Most likely is a bad ignition switch.

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No. Daytime running light can be disabled without affecting turn signals.

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There's a turn signal or running light out on that side, either front or rear. Turn on signal, get out and look. If both turn signals are working, chances are its the running light.

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As long as the engine is running you will have power assisted steering. With the engine not running you will not have power assist and it will be hard to turn but turn-able. If the engine is overheating it would be wise to pull over and park when safe to do so and shut off the engine before expensive damage is done to the engine.

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If you are parked with the motor running, engage the parking/emergency brake. Turn the ignition off and restart the engine. The daytime running lights should not be on.

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this happened on me, it turned out to be the earth strap from the engine to the chassis had gone rotten and broke loose, this stopped the engine from running but it would still turn over

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turn on your ac and see if it comes on then

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most likely would be a bad turn signal flasher

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