ECU module replacement

[06T200]

Have you checked rockauto? They had the NTK (OE) unit a couple of months ago, there is one listed on the site that indicates it is 'downstream' or 'upstream' for $50. But I thought they were different so this is a bit confusing. I have only replaced the upstream unit.

Glad the temp error has gone away, almost there!

[old n' slow]

Thanks didn't know NTK was original , that does help . Just have to look for (prewired to plug) NTK from a reputable seller .

As far as I know both upstream & downstream are the same . When I started this whole thing the ECU only said it needed the upstream sensor but stupid dad ( me ) figured I'd no it right and replace both with universals ; / ( threw both old O2's out ) , also I probably started the whole low temp fiasco by replacing the plastic OEM thermostat housing ( our other 04 Aveo with plastic housing blew up in Canada ) with the Dorman two piece metal housing thermostat with new ( but too low a temperature) thermostat . Live and hopefully learn . THANKS .