zaprat
New Member
I am a newbie
I have a Holden Commodore Calais S2 with Climate Control. I have no cool air. On acceleration, I note air vent directs warm air from face to feet and returns to face on deceleration. I also note the heater tap is letting hot water to the heater radiator and the cars effectively a cooker (no cool air). As I live in Qld my wife is NOT happy:bomb:
I have purchased another heater tap but have not fitted it yet because I want to find the cause of the problem before doing so.
I have read a few articles suggesting that this issue can either be air leak or a problem with the vacuum actuator located under the radio in center console. I have removed and checked the vacuum actuator and on inspection of solenoids, it seems ok. As the filter appeared clogged/deteriorated (big holes), I replaced the foam filter with home made filter using household vacuum bag replacement kit which included an additional air filter (as a short term workaround). The problem is still present. I am guessing therefore I may have a vacuum leak somewhere in my vacuum system.
I was wondering how I could go about finding a vacuum leak. I have seen several videos on YouTube of how to find engine vacuum leaks at the manifold using various techniques, the most common is to spray brake cleaner around the manifold and wait for change in idle speed, I have not done this as I am not sure if this has anything to do with a/c vacuum issues (and I don't want risk my engine to catching fire)
I have also read a post that there is air reservoir somewhere in the vacuum system which retains vacuum during sustained acceleration. It was suggested in the post that this sometimes this reservoir fails (but I am not sure how).
I am somewhat confused and therefore dangerous.
Q. How do I go about locating my vacuum leak in my instance?
Q. Could my issue be related to a so called engine Vacuum leak, are they related?
Q. Could it be a problem with vacuum reservoir and if so how to diagnose this? Where is it?
The air con currently blowing hot air which may something to do with heater being full of hot water and/or perhaps it needs a regas or both?
Regards
Zaprat
I have a Holden Commodore Calais S2 with Climate Control. I have no cool air. On acceleration, I note air vent directs warm air from face to feet and returns to face on deceleration. I also note the heater tap is letting hot water to the heater radiator and the cars effectively a cooker (no cool air). As I live in Qld my wife is NOT happy:bomb:
I have purchased another heater tap but have not fitted it yet because I want to find the cause of the problem before doing so.
I have read a few articles suggesting that this issue can either be air leak or a problem with the vacuum actuator located under the radio in center console. I have removed and checked the vacuum actuator and on inspection of solenoids, it seems ok. As the filter appeared clogged/deteriorated (big holes), I replaced the foam filter with home made filter using household vacuum bag replacement kit which included an additional air filter (as a short term workaround). The problem is still present. I am guessing therefore I may have a vacuum leak somewhere in my vacuum system.
I was wondering how I could go about finding a vacuum leak. I have seen several videos on YouTube of how to find engine vacuum leaks at the manifold using various techniques, the most common is to spray brake cleaner around the manifold and wait for change in idle speed, I have not done this as I am not sure if this has anything to do with a/c vacuum issues (and I don't want risk my engine to catching fire)
I have also read a post that there is air reservoir somewhere in the vacuum system which retains vacuum during sustained acceleration. It was suggested in the post that this sometimes this reservoir fails (but I am not sure how).
I am somewhat confused and therefore dangerous.
Q. How do I go about locating my vacuum leak in my instance?
Q. Could my issue be related to a so called engine Vacuum leak, are they related?
Q. Could it be a problem with vacuum reservoir and if so how to diagnose this? Where is it?
The air con currently blowing hot air which may something to do with heater being full of hot water and/or perhaps it needs a regas or both?
Regards
Zaprat