Check engine light is on; car stuck in 2nd gear, sounds like solenoids?

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Car is stuck in second and appears to run fine as long as speed isnt over 45-50. called a transmission shop, guy said it sounded like the solenoids and the car is notorious for this. Also, the power steering leaks like a sieve. I bought a power steering pump, but now imhearing from another mechanic that its probably just a line leaking??? how much would it be to fix these problems?