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Truck has dia port a-d think its closed loop has o2 and resonator in line with vac to vaporizer.Cross out a and b light flashes fast at.5 est.5 volts from a to d crossed over to to vac 1 test sets at 5 no change when pedal mashed. vac 2 changes when hose unpluged.Removed vac 1 open no vac closed with vac As far as I got on testing.Vac 1 not to spec even with switch good any ideas
  • Posted 29 Feb 2008 22:21
  • By proshadetree
  • joined 23 Feb'06 - 484 messages
  • Tennessee, United States

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