Overheating Options

[Moobit]

Not really sure what this can be. No signs of a leak.

I have 2 videos. Quality is just plain bad but it shows what i need to show.

One shows when it warms up. It is under C and then in a couple of seconds it goes up to norm operating temp.

http://www.youtube.com/watch?v=nq9B5FR-VGg

Second one shows when its at norm operating temp and then goes up slowly. Only seems to heat up at idle. As soon as the temperature goes up i accelerate and then the temperature suddenly goes back to normal.

http://www.youtube.com/watch?v=paE0S3BwTlg

Not sure if this might be a sensor problem. I have never really encountered this kind of problem where the temperature would change so fast.

Any ideas what it can be?

[ILoveMySilly97]

I have a similar problem. Took it to a mechanic and he showed me with the infrared thermometer(while the needle was high) that my car isn't overheating. He said I probably have a grounding issue with my thermo sensor(gauge). I don't remember but he shot at the engine block, thermostat, and radiator. The reading came out to be around 168? I think. Been too long. I've been driving my car like that for at least 5 months now. Drove it a couple hours and the needle is up high but not in the red zone. I know it's a risky take but I spent too much money trying to fix this. Not planning on spending even more. Buying a multimeter is highly recommended. If I would've bought that in the first place. I could've saved myself from buying all the sensors I bought hoping it'll fix the problem. If my engine does eventually overheat. I'm hoping I can engine swap it with an upgrade. Either a 1MZ or the 3SGE.