2001 Buick LeSabre Woes


Asked by Jul 29, 2016 at 02:55 PM about the 2001 Buick LeSabre Custom

Question type: Maintenance & Repair

My Buick has been acting very strange lately. The
transmission takes forever to shift up after 1st gear.
The engine runs at 5k rpm for 5+ seconds before
finally shifting. The other issue is once it shifts, it
feels like the engine is sputtering and has no power
(CEL starts flashing). Changed the plugs and wires
but the issues remain.
103,000 miles on original engine and trans.
Any ideas?

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