Too much coolant causing low coolant alarm?
So my check engine light came on along with a message on my command center. Message reads "Alarm. Engine Coolant Level % 101.6 Value too low" Seems odd to me that having 101.6% is too low. I have ...
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When we started getting that alarm, we too had plenty of coolant in the reservoir. But we still got a low coolant alarm. Sometimes we would go into limp mode for a few minutes, then she would start running like the wind and run all day. Next day, hard to start, back to low coolant levels, etc. Took it to SEVEN Cat garages in different states as we were fulltiming and traveling and no one could find a problem. Took it to the Gaffney service center. . . nothing wrong.
This went on for nearly a year while we were fulltiming. Finally something happened and coolant blew out the overflow and all over the toad and back of the motorhome. (Phaeton) Took it to Cat in Edinburg, Texas, and the tech said, "Your injector cup seals, 1 or more, are bad and allowing diesel fuel to mix with the coolant." Hence the sensor (which we had replaced) thought the coolant was low when in fact the reservoir was overflowing. Had all the injector cup seals replaced. Problem solved and never another problem while we owned the coach. They were the only ones from then on who did our service work.
Dale
This went on for nearly a year while we were fulltiming. Finally something happened and coolant blew out the overflow and all over the toad and back of the motorhome. (Phaeton) Took it to Cat in Edinburg, Texas, and the tech said, "Your injector cup seals, 1 or more, are bad and allowing diesel fuel to mix with the coolant." Hence the sensor (which we had replaced) thought the coolant was low when in fact the reservoir was overflowing. Had all the injector cup seals replaced. Problem solved and never another problem while we owned the coach. They were the only ones from then on who did our service work.
Dale
