My 92 Camaro seems to be running very hot. The temp gauge shows it runs about 260 almost in the red. I have a new temp sensor and a 160 degree thermostat. The fan is also wired to run constantly. Not to sure why the sensor will still read that is is very hot. Any suggests to what I can look at? Thanks!

 

What does it read when you are cruising on the highway? Any cooler?

Also, our factory gauges are notoriously off...I'd get an infrared thermostat and see what the temp is at the water neck. My gauge reads almost 240 when the 212* fan switch turns the fans on.

 

Air dam missing? Thermostat stuck?

 

Have you pulled the radiator? They are bad about getting leaves and stuff between the radiator and the condenser. If that happens airflow is pretty much cut off.

 

Run down the cooling system basics;

Check condition of the radiator:
- fins clear of debris, not bent/mangled
- no visible leaks from seals or hoses
- radiator cap gasket in good shape
- not blocked (leaves/debris)
- with engine at temp check for cold spots on the radiator (usually at the bottom, evidence of blocked passages)
Check condition of the air dam:
- not missing/broken
Check condition of the fan(s):
- if electric, check for proper operation
- if mechanical, fan clutch not worn out
Check Hoses:
- Not kinked/collapsed/leaking/steam leak. Look for evidence of pinhole steam leaks in the form of yellowish green deposits or "snot" at gasket areas and around hose ends.
Check water pump:
- no sign of leakage from weep hole
- no odd noises
Check coolant:
- proper color/mixture
- proper fluid level (has the system been "burped" to remove all air?)
- does system pressurize (engine at temp, thermostat open, radiator cap on and upper and lower hoses not soft)?
Check heater:
- does hot air blow from the vents with engine at temp (heater core not clogged?)

Other things that can effect engine temp are detonation, trans issues (auto trans generate a LOT of heat), mineral deposits in the engine/heater core/radiator that block coolant flow (from running tap water), and improper timing.