Poodles;1856565 said:
Actully no, you might need to replace it. Some heat is normal, but if you think it has gotten hotter sense the build there may be a problem.
Did you rewire anything possibly drawing more current they you should be through that relay?
Here is a simplified lesson in DC theory.
Heat coming from a component is expressed in Watts. Formula is Watts = Voltage X Current. Voltage would be the voltage drop across the relay. There would only be a voltage drop across the relay if there is resistance in the relay. So it would go something like this. (these are just made up numbers)
Perfect Relay 0 ohm's of resistance
10amps X 0 ohm's = 0 volts....... Watts = 0 X 10 Amp's = No heat.
Bad Relay .5 ohm's of resistance
10amps x .5 ohm's = 5V............... Watts = 5V x 10 Amp's = Something catching on fire.
Of course there is never going to be ZERO ohm's but you can see that a little bit of resistance in that relay will cause a lot of heat. Most likely you wired in something and now your pulling more current.