Integra 1991 LS with 95 LS stock engine.
 

Hey guys, I need some help. Yesterday I was driving my 91 LS with a 95 LS engine in, . First I tried to accelerate and there was barely any response but i can hear the engine trying to go.. it felt as if it was about to die.

Also if im driving for long period of time, then if i go above 60+ km/h i get the engine check light.

One more thing.. If im driving and my temperature gauge goes cold.. what does that mean?


Any ideas of what could be wrong?
THANKS!!!!

thermostat needs to be replaced?

When i drive normally, it stays in the middle but when i drive with the heat on, the temperature goes cold

Replace the t-stat like stated before.