Got a 90, 2.4lt. I have spent an hour looking through old posts. But can someone please tell me the exact use of the green and red leds. I assume the green is turbo boost. Is the red one low boost or an engine check? Truck drives fine,the green is rather intermittent ,but the red is on all the time. I repeat the truck drives fine. Just want to know finally what exactly they do. Again if truck drives ok and mpg is ok ,does it really matter if the leds are intermittent?

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