dvsasian

i have a 95 es300 and have a loud taping sound in the engine finding out my engine is bad (150k miles). i just had it rebuilt but now the overdrive light flashes and engine check light turns on . had it scanned and the code po770 which is the shift solenoid e malfunction showed. took it to a transmission shop telling me that they tested the solenoid and is ok. they told be the torque converter could be bad. do you think it is the torque converter? this problem happened after i rebuilt my motor. the transmission runs fine but the overdrive light flashes once in a while. this car never had any problem until the engine was rebuilt. please help!!!

mmarshall

Welcome to Club Lexus...I see this is your first post.
When a CHECK ENGINE light comes on and a code is retained in the system, the proper way to deal with it is NOT to just assume that the solenoid (in this case) was bad. Many shops just start by replacing the part that the code indicates and hope that will take care of it. Too many times it doesn't....and people's money is wasted as a result.
I don't know how your particular shop diagnosed your car but the PROPER way to diagnose a code is to look at the service procedure for that code and then follow the manual's instructions and do a STEP-BY-STEP procedure to diagnose and identify the problem. This is taught in ASE courses and by auto manufacturers' tecnician schools. Most reputable shops will not hire a mechanic or technician who is not either ASE or factory-certified.