1992 240sx intermittent CEL and stalling

[MrPresidentQ45]

A few months ago, I bought the wife a 1992 240sx coupe to commute to work in. After a few days, it threw a check engine light for the coolant temp sensor and egr system function. I replaced the coolant sensor, EGR transducer and EGR egr temp sensor and since that time, the CEL has come on intermitently but does not stay on. In the last few weeks, the car has begun to stall when shifting (manual) or coming to a stop (low RPM). I've checked all the hoses and connections (prior to the stalling issue, an AEM short ram was installed) and everything seems to be in good order.MAF is clean.Pulled codes this morning, found 32 (egr system function) and 45 (injector leak or rich condition).My next guess from reading the topics here is to clean/replace the IACV.Any other suggestions would be greatly appreciated!

[r3v_v3ng3]

well go by the codes first. make sure the egr is functioning and all the vacuum/hoses are good. don't just keep replacing parts if your not sure that its bad. do the same with the injector, check the resistance on em.