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Hi Im David, thanks for visiting the site. has any maintenance been performed on the vehicle prior to this happening?
sorry , i should have read the "already tried" section. did you bleed the system of all air after the replacements? if so you should do a pressure test on the coolant system to make sure you arent losing any internally. also i would recommend replacing the radiator cap as it may be failing to hold the correct 16psi in the system
ok. do both radiator hoses get hot?
the coolant temp gauge is reading hot?
you said when you loosen the sensors you dont have coolant coming out?
" loosening no water"
my bad, you meant losing no water. lol... duh
do a flow check to the radiator.
seems to me you need to check the wiring between the cylinder head temp sensor and the computer.
heres a print
do you still need assistance??