saab discussion


Saab 9000 ECU



        I have an 1988 900 16 valve non-turbo ECU # 0 280 000 564. the car will not go off idle with out going into over run cut off ( inj shut down then on like over rev). I have tried a new air meter and all voltages were measured at the computer. All inputs tps, air meter, temp rpm and power and grounds look and test good with lab scope. I'm thinking computer failed and is not seeing off idle or air meter input, but I can't prove it. I don't want to guess since this is an expensive part. Any input would be helpful Thanks

Unfortunately this is what we have to do. Guess that is... well, an educated guess we hope. This is why this site emphasis learning the theory of operation. If your car was in my shop I would first try an ECU. I have seen the ECU cause this problem before, but we never know for sure untill we try a know good part.
Good luck,



(This article is meant to educate a consumer,or as a guideline for professionals. You can cause serious damage to your vehicle and/or cause yourself injury. Only those qualified should attempt repairs. I do my best to assure that the above info is correct but take no responsibility for any damages incurred.)


Home - Email

Feel free to e-mail with any tech questions