pelicanman wrote:
I think you guys are right. That heater hose coming out of the firewall,there's a black round valve thing,with a x in the middle.
Off of that there is thin gray hose,he said there is no vacume coming out and that's,the problem.Not the blend door.
What is the name of that valve ???  He said the valve is around $60.00,does that sound about right ???
Please let me know.He's fixing it tomorrow.!!

See ya,old retired guy
Assuming that the test for (no) vacuum was done where the vacuum hose connection is at the firewall, and since the vacuum source will be on the intake or thereabout, then there is either a hose failure along the way, a hose disconnected along the way or the vacuum reservoir (has an internal check valve so it holds vacuum to HVAC system with engine off and when engine is heavily loaded/floored) has somehow failed. I have no idea what this $60 valve has to do with anything pertaining to the actual problem (unless maybe it only happens on max A/C, which wasn't mentioned earlier but...) at this point in time since it's operated by vacuum supplied to the HVAC control itself, of which you say is not functioning at this time. Realizing this, why is this guy wanting to replace the heater hose shutoff valve and how is replacing *that* supposed to cure the real problem???

Last edited on Wed Jun 20th, 2018 12:20 pm by CBB9M