shoklid

ok i am having a vtec issue it wont work until i run car for a half hour and shut it off, cel is the ect. is it true that the thermostat could be stuck but its not overheating im so lost

Funanin

The P28 ecu has a setting to not engage the vtec when the coolant temp is below are certain level. Im not exactly sure what that temp is, I just noticed the setting in crome. If you are getting a code for the ect then maybe its possible the ecu has disabled the vtec due to a bad ect. try replacing the ect and go from there. the only other thing i can recomend to "get around it" is if you have a chipped ecu, to use crome and burn a chip with the option to "Disable VTEC coolant temp check".

shoklid

well i have a 2000 gsr so i use a p72. and i did replace the sensor. can i do anything else to get this issue under control

Former User

Check for lack of continuity or a short in the ECT wires running between the ECT connector and ECU. Also inspect the ECT and ECU connectors for damage or corrosion. If all is fine, then it's also possible that the ECU is bad.

shoklid

well i have a obd2a and obd2b ecu an both have same issue

Former User

You need a multimeter to check the wires.

shoklid

ok is there a diagram of exact wires to test with pictures so im not doin the wrong wire