My sc300 recently has nearly took a crap on me it's lost all power and I see no signs of losing coolant but has no power at all it only goes to 20mph in low gear once in drive has no power won't even make it up a driveway hardly any suggestions

 

um perhaps the transmission is stuffed?

Do SC300's have a limp home mode?

 

Welcome to CL as a new poster.

With most automatics, the Limp-Home-Mode feature is ususally in second gear, not low. That allows a start-up from rest without the engine straining too much while also allowing something that, while not fast (or even keeping up with most traffic) is somewhat faster then a grandma-crawl.

As far as head-gasket issues go, often a head gasket problem will allow coolant/anti-freeze to get sucked into the cylinders and vaporize out the tail pipe as a white steam/smoke. If you don't see that out your exhaust pipe, it sharply minimizes (but does not completely eliminate) the chances of it being a head gasket. And don't confuse that kind of steam with the cloud of water/steam out the tailpipe that is often visible on catalytic-converter-equipped vehicles with a cold exhaust system....that's more or less normal, and usually goes away when the engine and exhaust heat up.

 

yea it doesnt show smoke at all and it does not overheat at all my guess is the head gasket is lifting little by little and causing compression issues i could floor it and the car jus shakes ugly and sounds like its straining if i even get the front stuck in a driveway it wont even have enough power to pull up the driveway