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does anyone have a problem with their engine light coming on and going of at its own will. it seems to be linked to(would you believe it) fan switch on the HVAC control. it also affects the oil pressure gauge and voltage gauge.any help is appreciated.
Have you pulled the codes? It sounds like a weak alternator or bad ground is causing a low-voltage condition. Or it could involve the glow plug relay. That link will also tell you how to diagnose things with the engine running.