06-05-2019, 03:21 AM
Join Date: Mar 2012
Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx
FF Reputation: 62
Buy-Sell-Trade Rating: (0
That may be a default to car thinking the shutters are fully closed to prevent overheat. Likely because the electrics are disabled. You gotta fake the PCM to thinking they are still working but with them gone.
To above, the cars run fine with no shutters and have been for 75 years and what the thermostat does. If the car gets too cold and stays that way you will likely pop a stat code for not closing all the way ('insufficient temp to go to closed loop' or similar) and your indicator the engine is staying too cold.
If they were on MY car I would get rid of them instantly, the added minute mileage is not worth the price of an engine if they stick shut somehow. Already dumped them on my Nissan.
Post #4 is thinking and hit it, gimmicky crap to cost you way more money and why they include flimsy junk like that on cars today. Do a realworld cost study with benefit vs. cost there and things like that stay broke if you are not witless.
Fix the driver first, then fixing the car becomes so much easier..........
Last edited by amc49; 06-05-2019 at 03:25 AM.