Question about 1991 Oldsmobile Ninety Eight Regency
26 quad-driver module (computer) circuit #1 fault
36 ignition system circuit error. ignore this unless the engine stalls on the road
Code 26 is the issue here, i thnk you will need to remove the transmission pan and replace the shift solenoid pack, it is attached to the valve body inside the trans.
Posted on Dec 21, 2009
I would first make sure you in drive when shifting, don't go by the dashboard (you could have some slop in the shifter cable/rod) I you shift down 3 gears from park you should be in D and see if that still does the same, if it does your shift solenoids may be bad or worn clutch packs in the tranny.
Posted on Dec 18, 2009
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