Quote:
Originally Posted by rhaehnel
I know this is an old thread, but it was really helpful. I have a similar problem that I have been trying to diagnose. I replaced the coolant cap, engine compartment temperature sensor and coolant level sensor, but still the light keeps blinking. I have tried to check the wiring with the assumption that the circuit is normally closed when the coolant is topped off. This thread gave me the tip that full = normally open. I disconnected the connector to the coolant sensor and the light went off. Real progress! Thanks
Now I need to figure out why the circuit is closed with the connector attached and full on coolant, but that should easy now that I understand the system logic.
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Yeah, this is old! Sold the car years ago, never did figure it out. Just left it disconnected. Still see that car driving around tho! New owner is definitely in over his head.... Explained oil changes to him and he said he would just let the dealer do it. This from a guy with 3 teens/tweens, a tiny house and college on the way.