This is my latest update on the elusive code 232 on the wifes 90' b234, so far I have checked for all known vacuum leaks,resealed intake manifold and injectors,replaced O2 sensor(original 170k miles-was still working)new AMM and fuel filter,check valve and FPR unit and checked it's vacuum sources,new cap rotor and wires with plugs.I am unable to check for fuel pressure;the access port on the fuel rail won't come apart,but the other code 231 never comes up either; only 232.I am going to send out the injectors to cleaned and balanced unless anyone has been down this road before,all the components were original; so at 170k miles I don't think about the cost as the car never gives us grief.The code 232 never throws a check engine light, but I just like to have things right. Any input is always appreciated.
Scott