How to change the temp. from F to C

Change the thermostat sounds like its stuck closed or open

If it is a number thermostat, first check your box temp., then change the dial 1 number and check temp. in about 2-3 hours and see which direction it goes. Usually thermostats with numbers causes the temp to change very slowly so take your time and you can figure it out.

It is most likely a worn out relay tthey when it's could metal contacts in relay are not making connections I know it sounds weird but metal changes major in different temps

nothing to do with temp changes. only to do with a broken lock mechanism.

Perhaps your gauge is faulty. Is your coolant filled up? You may also have a vapour lock causing the problem. Also you may have to change your thermostat. It may be sticking. Good luck!

Check that you have no air locks or blockages .If you have a fan assisted engine .it should cut in at a certain temp

I would start by changeing the coolant temp. sensor for the emisions.This sensor controls the amount of fuel for any given temp.

thereshould be some buttons groupped together on thedash gas mileage is mph/kilo air temp cel /fer push the button until u find the readings readable foryou

Change the engine temp sensor but be sure you change the right one as some will also have a coolant temp sensor dont get them confused.