Question about 1999 Buick Century
You can check the ECM by testing relay sockets that it should be sending signals to. The fuel pump is a good example. You can also put a screwdriver to the injectors to see if they are getting their pulses from the ECM. Please see my tip at http://www.fixya.com/cars/r6022358-relay_check on how to check relay sockets. Please let me know if you have questions.
Posted on Oct 08, 2010
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Posted on Jan 02, 2017
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