malibu egr

[rayruner]

I had the egr disabled on my 02 3100 malibu, after i decided to enable it i see on the scanner that when the valve is closed the volts are still reading 0.78,that doesn't seem right, also i,m getting a lot of jerking and surging at light throttle and also when the trans shifts at light throttle, i used tiny tuner to set the temp at 0, disable speed at 3 mph enable speed at 6 mph disable tps at 2.5 and enable tps at 5. i had the valve off and cleaned it, didn't really need it the pipe from the header is clean and no holes or cracks that i can see. on the scanner when speed increases, the volts and % egr also increases, anyone have any ideas on that problem. thanks

[86FieroSEv6]

The closed pintle volts should be in the .6 to .8 volt range. The key is that the PCM learns this as closed and sets it as 0% EGR. If you were originally tuned for no EGR you will have A/F upset when EGR begins to flow.

[rayruner]

thanks for the reponse.