> My car is trembling and I don't know why?

My car is trembling and I don't know why?

Posted at: 2015-01-07 
Your temp sensor isn't necessarily "bad" if it wasn't reading an accurate coolant temperature with no/low coolant in the system. The coolant temp sensor must be immersed in coolant to give a reliable temp reading.

If your engine was run with no/low coolant and was overheating without you knowing for how long, that could have damaged several important things. You could have ruined your head gasket (causing compression problems, coolant leaking, burning, or mixing with oil, run problems), you could have fried your piston rings (causing the engine to burn oil, compression problems, run problems), your coolant could have been "disappearing" into the oil, damaging your bearings... and on and on.

The first thing I'd do with the engine is check compression on each cylinder, run a pressure test on the coolant system and take a good look at the oil, making sure there's no water/coolant in it. If those check out, only then I would explore other run problem causes.

If u said it overheated theres a chance you blown a head gasket. I don't know too much about that but if your car is shaking maybe you need to replace ur sparkplugs

Most likely sustained damage serious enough to make it uneconomical to fix when it overheated

renew the temp sensor due to giving the engine a false emission / fuel mixture fault.

I have a 1999 Nissan Altima. I just changed out the alternator a few days ago. Then my car shut itself off after overheating from no coolant in the radiator. (My temp sensor is broken). Now my car is trembling when I accelerate or if I'm at certain speeds or if I have the overdrive on. Does it need a tune up or is my belt too tight or what?