Mechanics

ON BOARD DIAGNOSIS

1994 Pontiac Grand Am • 165,000 miles

I have a obd1&2 reader but when I plug into my computer plug it shows not reading.
My engine died like someone shut off fuel.
can get it cranked but rough and smokes.
white smoke. No water shows in oil.
water resovoir is not low.
am at a loss for what to do next.
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Trcrumby
October 30, 2013.



You can't read codes on that car with either of those tools. You need a professional scan tool because that is a hybrid of both systems.

You are getting coolant into the combustion chamber somehow, most likely a blown head gasket.

Wrenchtech
Oct 30, 2013.