KOEO code #34 defective EGR pressure transducer sensor and/or insufficient egr flow or EVP voltage high or PFE voltage high.I just pulled the EGR valve and cleaned it and the pin pushed in and out with ease not sticking at all.As for the rest i dont know where to start.

code # 67 a/c input high or neutral drive switch failure. not sure how to check or correct either.Any help appreciated.

It ran perfect until i swapped the act and cleaned the TB 2 days ago now hanging idle and idle surge as well as running like crap.

 

code 67 occurs if you push the clutch in and/or not in nuetral. others will confirm this but i pretty sure.

you reset codes and driven it for atleast 15 min to cycle the codes right?

i know on a toyota camry i was messing with awhile back we had the code "insuffient flow through egr" and one way to test egr was to get a vacuum pump and squeeze vacuum on the egr, its suppose to make the car stall or almost stall.

its kinda strange that all this is happening after changing the ACT and cleaning throttle body

might want to check tps, base idle reset and also make sure maf sensor is in up right position

 

I got rid of the 67 and i guess i need to get a vac pump to check the EGR.MAF is fine and did the base idle reset.So I guess the TPS or EGR.Any other suggestions?

 

another way to check the egr is to push up on the diaphram and put your finger on the vacuum port. the diaphram should not go back down until you let go of the port with your finger

 

I did that and it holds air,also tried to blow through the vac line hole and cant so i assume that it is opening and closing correctly or at least sealing.Possibly the sensor on the back of the EGR?Any other suggestions?