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1. M

   Throttle Body / Intake Vacuum Ports for EGR

   I got the egr working after replacing the VSV and re-doing the lines under the intake. When I was testing it out after re-installing everything I still couldn’t get the vacuum readings the FSM says at 2500rpm unless I pinched the line to the vsv. Since one of the steps in the fsm is to connect...

   • Words: 120
   • motormayhem
   • Post #7
   • Aug 28, 2023
   • Forum: 80-Series Tech
2. M

   Throttle Body / Intake Vacuum Ports for EGR

   Good call on this. They showed no vacuum at idle, but as soon as I hit the throttle they showed some and were slightly different (like you said). I was able to confirm vacuum at all ports. Not sure how I didn't get any readings last night. I re-ran the test this AM and was able to get the...

   • Words: 110
   • motormayhem
   • Post #6
   • Aug 14, 2023
   • Forum: 80-Series Tech
3. M

   Throttle Body / Intake Vacuum Ports for EGR

   Hey All, I'm tracking down a P401 insufficient EGR issue. I've followed the FSM to check for vacuum at the EGR valve during cold/warmed up at 2500 rpm as well as moving the vacuum line from the modulator to the vacuum circuit. I did not see vacuum at the EGR valve in any of those conditions. The...

   • motormayhem
   • Thread
   • Aug 13, 2023
   • egr intake throttle body vacuum
   • Replies: 7
   • Forum: 80-Series Tech