ECT Drops 50° When Lifting Throttle

f22beaver

Member
Joined
Sep 24, 2022
Messages
33
Location
Indianapolis
2008 JKU w/ 3.8

Had a broken ECT sensor. It then wicked coolant into the connector. So I changed the connector and replaced with an OEM ect sensor.

Now when I let off the throttle this is what my ECT reports.

I know I need to burp it just to make sure I don't have air, but have you guys seen this before?

If it was a thermostat failed open wouldn't it just be cold all the time?

Screenshot_20240930-190447.png