I have a 1994 honda accord, I recently pulled the tranny to replace the clutch. In doing that I broke the coolant temp sensor, I replaced it. Check engine light is still on and it flashes 6 times when I check it. I replaced the sensor a 2nd time to have the same results. Any ideas?

Also with both new sensors the fan runs for about 10 mins after shutting off motor, even with a cold motor, that's with the key off when I turn the key on it turns the fan off. That's new, never did that before.

After it sits for a bit it has a slight hesitation to start, turns over about an extra 5 seconds than normal and its a bit of a rough idle for 5 to 10 seconds.

 

Check the wiring in the connector going to the sensor. Sometimes the wires/pins come loose or they may be corroded/dirty and you will not be getting full connection.

Also just to make sure you are replacing the correct sensor. There are 2 ECT sensors and 2 ECT switches. The engine coolant temp sensor for the ECU is the 2 wire sensor located under the distributor, the 1 wire ECT sensor located directly beside it is for the gauge cluster (temperature gauge) and the two ECT switches on the thermostat housing and intake are for the radiator/AC fan control.

 

First one was Delphi #b000cgma3c, 2nd was SU4006VC, that's the part number from autozone that I replaced. That is the 2 wire that I replaced both times. I will check wires/pins again and update this afternoon.

 

The other sensors are inexpensive, I may just replace them all.

 

https://www.hondapartscheap.com/auto...mp-sensor-scat

which part number did you replace ?

 

#19, "37870-PK2-015 / Sensor Assembly, Water Temperature (Hadsys)"

Replaced it twice with the parts I listed before with the same result.

 

it actually sounds like you got the connectors for the fan switch and the ect sensors swapped

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I didn't disconnect any sensors, this is the only one that broke off. I also tried to swap them, but the pigtails are not long enough. I bought #18 "37773-PT3-505 / Switch (A-106)" and will be putting it in this weekend. I will also take a better look at the wires, connectors and stuff on the harness to rule out broken wires and will update this weekend. Thanks again for all your opinions as I am at a loss.

On another note does anyone know where I can get another connector end for it? I have speculation since the sensor was broke off in the connector maybe a wire came loose inside the connector.

 

 

it's actually a common thing