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A/C problems

TEK310

TEK310

New member
air blows through all vents, i can hear the vac pump pumping, usually stops when i have idled for a min, im thinking my check valve is missing for the vac hose.

is the check valve in the engine compartment? or inside the vehicle.


also could my cam be causing low vacuum from excessive overlap? brakes seem to be harder to clamp down as well, not as snappy as most cars i have driven.


i have the automatic climate control
 


Vacuum pump? Maybe you mean the ABS pump? The only thing that I could think of that would cause your brakes to be harder to apply would be a bad master cylinder or brake booster.

If you have a radical cam then low vacuum could become and issue. I know it is on the V8's, but have no experience in the 3800 cam world.
 
TEK310 said:
air blows through all vents, i can hear the vac pump pumping, usually stops when i have idled for a min, im thinking my check valve is missing for the vac hose.

is the check valve in the engine compartment? or inside the vehicle.


also could my cam be causing low vacuum from excessive overlap? brakes seem to be harder to clamp down as well, not as snappy as most cars i have driven.


i have the automatic climate control
Click to expand...


this is a piss poor explanation of whats going on.

does you a/c blow cold?

do you mean the a/c compressor shuts off and on? if so your low on refrigerant. and it gets filled from under the hood.

if your brake pedal is hard, and you need to push harder good chance you cooked your pads.

a bad master cylinder would give you mush for pedal feel and even drop to the floor aka no brakes.

the vac booster i think would make your pedal hard, like the car was off. but i think you would hear it leaking. a hiss at least maybe after you turn the car off, coming from the booster area. also check the vac line to the booster and the rubber seal the line goes into the booster.

if your cam was causing it you would have felt this problem right after you did the cam, so dont think that has anything to do with any of your problems.
 
Same thing happened to me on the ac issue. Its the main vac line feeding the control modules under your dash. The 3 way vac valve on top of the supercharger has a thin black hard line that heads to the fire wall. Then runs along the fender near the battery then back to the firewall. Somewhere on that line it's either cracked or the coupler fittings that splice the line together are leaking. Inspect those real good. Hope this helps
 
850Fishing said:
Same thing happened to me on the ac issue. Its the main vac line feeding the control modules under your dash. The 3 way vac valve on top of the supercharger has a thin black hard line that heads to the fire wall. Then runs along the fender near the battery then back to the firewall. Somewhere on that line it's either cracked or the coupler fittings that splice the line together are leaking. Inspect those real good. Hope this helps
Click to expand...


thank you. exactly what i was looking for.


i was not talking about abs pumps, there is a vacuum diaphram under driver side footwell with vac line hooked to it.

i bought this car with them cam in it, been doing it from day one..


just saying before you talk like a bad ass, try knowing what you talking about.
 


not one of us here are mind readers, well maybe Billboost is, but most of us need words put together in sentence form, with the whole story and something close to the proper terminology used for the parts you are referring to.

your quotes...


i can hear the vac pump pumping, what vac pump pumps on your car? you could be referring to 3 things if you dont know what you are talking about. or can make it clear.


is the check valve in the engine compartment? or inside the vehicle. what check valve?


also could my cam be causing low vacuum from excessive overlap? brakes seem to be harder to clamp down as well, not as snappy as most cars i have driven.

now where in the world in your first post do you say you bought it like this???????? been like this since day one???? where? how would we know?

so ill finish with your own line.



"just saying before you talk like a bad ass, try knowing what you talking about." <<<<<<<yes you need to do this.

ever think why 2 days went by with no response? and then you had to bump it? do you know why? no one knew wtf your were talking about, that's why.
 
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