Problem EATC Heat Coming Thru Vents
This happened to me two years ago, after some auto body hacks in town beat on the car for a week fixing the right front quarter panel. I was able to fix it by resetting the EATC with the self test. The system ran through its cycle, there was a lot of thumping under the dash which I took to be the blend door opening and closing, then everything started blowing normally.
Try this first anyway:
“Key on, engine running: Press OFF and FLOOR simultaneously, then press AUTOMATIC within 2 seconds. The EATC will have to run some tests and do some thinking. It may take up to 30 seconds. Soon it may display some codes. Write these down. To exit self test press DEF.”
Look for error code 024 which is a fault in blend door calibration during the test, or code 025 which is an intermittent fault in blend door calibration. There are a bunch of others from 030 up to 125, but I don’t have all their descriptions.
Hopefully this will reset it for you like it did mine, but if not at least you gave it a shot and might get more info.
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Last edited by Svashtar; 12-07-2017 at 04:42 PM.
2003 black pre-decontented 300B #5886 of 7838; Born on 10/31/02
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