@deodra I carry a Foxwell NT520, but I use the cell phone for day to day. It works well and I can add monitors or capture data that I want with Torque. It is nice to troubleshoot O2 sensors etc

 

You can also just add a basic aftermarket temp gauge. I put one down next to my right leg with an adapter for the temp sender in the upper radiator hose.

 

If you're pulling the front end of the engine off be prepared ($$$) to replace a few items that have been there since it left the factory and are at the end of their life and will leave you stranded....... All idler pulleys, water pump, front main seal, thermostat for a low temp version, all the rad hoses, hose to throttle body, and check the power steering pump for a leaky/blown rear gasket and new belt. I had to replace all the above when I got my D2. Just sayn', alot of these parts will look "ok" when you just pop the hood but when you pull them you'll see the hoses are swollen and collapsed on the inside, pulleys rattle and are loose, seals are weeping, belt has cracks and the low temp thermostat is practically mandatory. Give the fan a spin and if it doesn't spin around like the wheel on Wheel Of Fortune it's ok. (should only spin 1/4-1/2 way around with resistance) Lastly, I put a dab of anti seize on all fasteners and water pump snout to keep future generations from cursing my family name. My 2 cents

 

ROFL! You're sooo right! I just did my front main seal here a few months ago. It was toast. I will be replacing a few pulleys as they're making a squeaky racket. I am replacing the water pump and oil pump...the sump o-ring, a bunch of gaskets. It looks like I have a pretty significant leak on the driver's side somewhere around the steering box/above the steering box. Ugh.

 

That might be the PS pump. The gasket on the back of them crap out all the time apparently, mine was toast. Oil all over the left side of engine and steering box, all over the hoses, inner fender, frame, and firewall. Luckily it was an easy job while the bracket assm. was off the engine. Remove some allen screws, clean surface, new gasket and bolt the backing back on. Ebay had the gasket for a few bucks. I got one squeeker pulley that I told myself "Meh, I'll save a few bucks...it looks ok". Guess I'll be replacing that one! (luckily it's the easy one under the AC compressor)

 

Do you know the root cause for the overheating? I have seen the water pump gaskets blown due to overheating and system overpressurization. Do you know why the oil pressure dropped? While you have the pan off, check the cam bearings to make sure they are not walked out, that can happen due to overheating, could be the cause of the low oil pressure too.