I have a 332 trouble code on my 4.9l f150 which is egr insufficient flow . The egr valve is good and I swapped the egr position sensor with no change. What would you do next? I've considered trying to basically eliminate it since I know the vacuum line are very brittle (typical) and the coffee can vacuum reservoir is gone and those lines are plugged. Could I easily just plug the egr vacuum lines and it just never be a drivability issue? It doesn't require emissions and I don't care about the check engine light. My reason for pursuing this at all is every once in awhile when driving it'll buck just one time. And it's fine again. I'm assuming the egr situation is the culprit? Nothing else is obviously wrong.....the only other code I got when doing koer test was a knock sensor signal code but I'm pretty sure I got that because I didn't rev the truck high Enough during the test. I did it with my hand on the throttle cable under the hood. Any thoughts or suggestions is appreciated.