Since this happened after the replacement, you need to scrutinize your steps.
Is the connector on tight? Check it. If tight, pull it off and look for bent pin, corrosion etc.
Verify the part is right. IF so swap the old one and the new again. IF it changes, take the new 02 back and try a different brand or an OEM one. Check for a part number on the original if possible.
I agree that the new 02 shouldn't be bad, but that isn't always reality. For that matter, I have had the wrong sensors in boxes marked otherwise, application issues and on and on.
Monday, August 14th, 2006 AT 9:31 AM