Question about Cars & Trucks
Posted on May 12, 2017
Which one coolant sensor or temperature sensor?
Posted on May 12, 2017
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Posted on Jan 02, 2017
SOURCE: IAT sensor
the iat 5 volt referance is tan/black in pin d- the sensor return is tan on e-maf sensor ignition power is pink in b cavity- c is ground and black/white -a is the maf signal and yellow
Posted on Nov 12, 2008
It is a 2 wire seneor under the throttle body. You will have to remove the air breather and it will be a brass/black plastic sensor. A 3/4 socket will fit it.Good Luck
Posted on May 19, 2009
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DTC P1258 - Engine Coolant Over-Temperature Protection
The powertrain control module (PCM) has the ability to disable 4 injectors during an engine over-temperature (overheating) conditoin. Engine is considered over-temperature whenever the engine coolant temperature reaches 268 F. This protection mode allows the PCM to alternate between groups of cylinders, thereby reducing coolant temperature. This is accomplished by disabling the fuel injectors. This DTC is set to show that an overheating condition was or is observed by the PCM and that the protection mode has been engaged.
You will need to inspect the cooling system to see what is causing your overheating issue. If the engine is not actually overheating, this code may be set due to a faulty engine coolant temperature (ECT) sensor.
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