Precision Rectifier Help
That's not really a precision full-wave rectifier- the gain for positive inputs is +1 and the gain for negative inputs is -1.5. Add 300K to ground on pin 10 to correct that. 

It looks like it's oscillating due to stray capacitance and/or poor bypassing. Try bypass capacitors from +V and -V supply voltages to ground near the chip (100nF will do) and maybe 20-100pF from pin 7 to pin 6.