1988 Honda Civic dx hatchback warms up, temp gauge goes to high, letting it run 15-20 mins engine and radiator are cool enough to touch?

1988 Honda Civic dx hatchback warms up, temp gauge goes to high, letting it run 15-20 mins engine and radiator are cool enough to touch? - 1 1988 Honda Civic dx hatchback warms up, temp gauge goes to high, letting it run 15-20 mins engine and radiator are cool enough to touch - 1

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Hi so that is about right once you under stand what is happening. The thermostat opens and shuts till the engine is hot completely.

Have you even taken the radiator cap off to see if there's coolant in the radiator?!
If you have coolant replace the damn thermostat and run the motor for 20 minutes with the radiator cap off to purge all the air from the cooling system.