Hi All, I recently did some TW sensor troubleshooting because my car has been having a hard time cold starting. I have no engine codes.
I want to clear up some misinformation I came across when reading multiple threads here on 3Geez. This may not be the case for all 3Geez so this is confirmed for an 87 LXi Hatch.
The TW sensor Autozone part number that has been thrown around is incorrect, it is NOT SU4006, and that goes for 5S1468 too at RockAuto. I picked one up and had to return it because the tab on the plug was different. The correct sensor was in fact SU410.
Honda Part Numbers:
TW Sensor = SU410 = 37870-PD6-003
Thermo Switch = SU4006 = 37773-PJ0-661
So to be 100% sure you get the right sensor follow these two easy steps:
1) - Preform proper troubleshooting: Download Service Manual
2) - Compare the tabs on your defective sensor to the replacement sensor