[AC_ML]

I will start with the temperature sensor, too, since the temperature input has various implications: engine management close/open loop and most likely influences some other engine parameters. In addition, the temperature sensor and temperature system does not depend on the MAF, plugs, wires, etc, so it needs to be check first since it is showing an isolated problem.

I would check it with an OBDII scanner, before starting the engine, and after.
If your OBDII scanner has an engine parameter display, then you can see how the engine temperature goes up slowly as the engine warms up. I would drive it around with the OBDII scanner connected to see if there are any temperature sensor anomalies. If there are any spikes, random values, or if the initial values are incorrect, then your temperature sensor is bad and you need to change it. If you don't have a good OBDII, then 43sqd instructions should work fine, too.

I would do the same for the MAF sensor readings usinjg the OBDII scanner (easier with a parameter display option). If the values are within the normal ranges during idle and at various RPM's, then it is not the MAF sensor, which make sense since the MAF sensor is an isolated sensor(does not depend on other sensor inputs or systems in order to work) and just provides specific air mass readings that need to be within normal ranges.

Good luck..!!

AC