SHIFTS FINE UNTIL AFTER A 1/2-HOUR TO 45-MIN OF HIGHWAY DRIVING. AFTER EXISTING HIGHWAY, RESUMING STOP-AND-GO CITY DRIVING, SHIFTS VERY HARD. HAD TRANSMISSION FLUID CHANGED ALONG WITH FILTERS LAST WEEK. NO CHANGE. 134,000 MILES. (CHECK ENGINE LIGHT IS ON. AIR CONDITIONING IS OUT - AM TOLD CONDENSER IS LEAKING. )
ROB A
Your going to have to get the car scanned for the DTC code. The Check engine light indicates that the ECM has detected an issue with the cars engine or transmission performance. Your hard shifting could be the failure to the Pressure control solenoid (PCS), that would be a DTC code P1811. The PCS is located under the trans axle side cover assembly. IF you go to Auto Zone, they can scan your car free of charge and can give you the step by step instruction to replacing the part that may have failed. Good luck and keep me posted, be glad to help.
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