shuddering bob

[boneyron]

i recently purchased a 90 granf marquis gs the car ran sounded and looked awesome a few days latter takeing off at light it started sputering and hesitateing at 30-40 in second i can gun it and the shakes go away till i try to maintain my current speed check engine light comes on after about 10 miles any ideas also dies periodicaly and shdders if kept at 35
i have goten autozone to give me the codes o2 sensor high exhaust presure and lean fuel always 41,91,34

[reekor]

Instead of guessing at it, seeing what the check engine light has to say might be a good start.

Originally Posted by boneyron

i recently purchased a 90 granf marquis gs the car ran sounded and looked awesome a few days latter takeing off at light it started sputering and hesitateing at 30-40 in second i can gun it and the shakes go away till i try to maintain my current speed check engine light comes on after about 10 miles any ideas also dies periodicaly and shdders if kept at 35

[boneyron]

well ive changed the 02 sensor ant the fuel pump but im still haveing hte shakes not as bad though