i have 75000 miles and the check engine light is on and check oil light it also is idling very high when i shift to reverse it is still idle very high it is like i am shifting out of gear
when i sift to reverse my car makes a thump sound and it shimmeies when i put on on 2002 Saturn SL1
Have a mechanic check it out.
sounds like sounds like a loss of friction material on the friction disc in the transmission causing it to slip. the engine speed is a loss of resistance from the transmission.
Get check engine light and oil pressure checked first to see if it's worth fixing any of the other problems.
have codes scanned at auto zone for free and post so we can adv