turbowop
Well-known member
So I'm on a quest to pull some epic fuel mileage out of 503 for long trips. I swapped out the MAFT/GMmaf setup for a 2gMaf/SAFC setup and threw in a new o2 sensor. No chip, but fuel trims look good so far. I've run into a bit of an issue with the recent cold weather though...
I can't seem to get the coolant temps to go over the mid 170's when outside temps are below freezing. I figured the car needed a new thermostat so I picked up a new OEM 88C one from the dealer to install. The one I pulled out was a 180F unit but was functionally okay. Even after installing the new one today, same deal. /ubbthreads/images/graemlins/dunno.gif I can see o2 trims so I have an idea where I need to make adjustments with the SAFC, but without the car seeing over 180F, the fuel trims never adjust and the thing stays in warm up mode.
Anybody ever use the cardboard over part of the radiator trick during the winter? I'm thinking about giving it a try.
I can't seem to get the coolant temps to go over the mid 170's when outside temps are below freezing. I figured the car needed a new thermostat so I picked up a new OEM 88C one from the dealer to install. The one I pulled out was a 180F unit but was functionally okay. Even after installing the new one today, same deal. /ubbthreads/images/graemlins/dunno.gif I can see o2 trims so I have an idea where I need to make adjustments with the SAFC, but without the car seeing over 180F, the fuel trims never adjust and the thing stays in warm up mode.
Anybody ever use the cardboard over part of the radiator trick during the winter? I'm thinking about giving it a try.