The car has 3800 Series 2 motor runs rough at idle, smooths out at higher exceleration (when still in park).
while running the engine sounds suffeceint but when moved into drive, it stalls.
we have replaced; sensors and spark plugs, ecm unit (but nothing has changed after all replacements)
does anyone know what is going on?
First thing to do is pull the codes form the computer which can be done free and here is how: http://freeautomechanic.com/diagnostictroblecodes5.html
Once you have the codes, post back what they are.
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