I have checked and rechecked fuses and relays. Can you explain open loop and can a scanning tool help?
Aug 16, 2018 at 1:02 PM
Cooling fans
2006 PONTIAC GRAND PRIX
JOHN SAUNDERSON
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Thank you.
Aug 16, 2018 at 1:40 PM
Welcome to 2CarPros John.
What do your cooling fans not seem to be doing? Not coming on at all or sticking on or
Open loop in a modern vehicle means the time period when the computer controls for the engine are not using the data from the various sensors to control the fuel mix into the engine, they instead are using default settings that will allow the engine to run but they are not being adjusted the way they are in closed loop operation.
A scan tool could help, depending on what your issue actually is.
What do your cooling fans not seem to be doing? Not coming on at all or sticking on or
Open loop in a modern vehicle means the time period when the computer controls for the engine are not using the data from the various sensors to control the fuel mix into the engine, they instead are using default settings that will allow the engine to run but they are not being adjusted the way they are in closed loop operation.
A scan tool could help, depending on what your issue actually is.
Aug 16, 2018 at 2:18 PM
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