Check Engine Light on even Before Cranking - Saab 900 Bulletin Board - Saabnet.com
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After a lot of problems in the early summer that were solved by first changing the Hall Sensor (crankshaft mounted) and later the air mass sensor my 900i 16v drove like a dream. Now it has stood in the garage for 1½ months and sometimes I turn the ignition to see voltage etc. But today immediately the check engine light came on and wouldn't start when cranking! I can't believe it's the Hall sensor again.
It must be something the EZK measures faulty instantly even BEFORE cranking. Tried with yet another air mass sensor to no avail. I have checked all connectors like throttle sensor and idle control valve for corrosion.
Please - Any ideas?
_______________________________________
https://www.youtube.com/@ursusskandia
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