http://www.beckmanntechnologies.com/products.html

You would be better to keep the name handy and use it when you deal with your independent. Beckmann puts a pretty high list price on retail sales. There is a good lick for your independent so let him use it to give you a good deal if that is the problem.

The O2 sensors have a biasing voltage sent from the controller. if that is missing the controller is bad. I would suspect any other diagnosis without a second opinion.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician