OT: 93 Grand Prix AC problem - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72superBB · 06-29-2004, 09:59 PM

So my ac decides it only want to blow out the defrost and floor outlets, not the dash vents.

It does this on whatever I put it on. Could this be a vacume line problem or what?

1993 Pont Grnad Prix 3.1 liter v-6

Thanks for any input.

Ron

fast71 · 06-29-2004, 10:18 PM

yes ,, sounds like the vacuum line is off or broken.

72superBB · 06-29-2004, 10:19 PM

anyone have a vacume diagram?

thanks

fast71 · 06-29-2004, 10:22 PM

should be one under the hood. look around the throttle body. one line should run to the inside of the car. theyre might be a vacuum ball under the hood

*Gee_Emm* · 06-29-2004, 10:25 PM

Check around the firewall or under the battery. My GF's 94 GA was doing the same thing, the hard plastic line under the battery shattered, I spliced it up with a piece of hose and its been good ever since.

Only problem now is the damn car is running rich and I can't figure out why.

72superBB · 06-30-2004, 07:47 PM

anyone else?

thanks

mrein3 · 07-01-2004, 07:42 AM

I wish I had a nickle for every cracked plastic GM vacuum hose I replaced with a piece of rubber hose.

Just find the crack or break, finish breaking it if it isn't busted clean, and reattach the two ends with a piece of hose.

72superBB · 07-01-2004, 08:17 PM

I have looked and looked, but only found one vacume hose. The hose goes from the rights side of the motor to a metal tube that is hooked to the side of the wheel well and is curled down with an opening facing down. THe other thing it is doing is under normal to heavy accelaeration, the blowing from the fan stops almost completely.

I'll see if I can find a vacume diagram somewhere.

Thanks

06-29-2004, 09:59 PM	#1
72superBB Registered User Join Date: Nov 2003 Location: Mandan, ND Posts: 422	OT: 93 Grand Prix AC problem So my ac decides it only want to blow out the defrost and floor outlets, not the dash vents. It does this on whatever I put it on. Could this be a vacume line problem or what? 1993 Pont Grnad Prix 3.1 liter v-6 Thanks for any input. Ron __________________ Life is full of choices and a Chevy is the best choice. 1990 Chevy SWB

06-29-2004, 10:18 PM	#2
fast71 Drive it like U stole it Join Date: Mar 2000 Location: tunnel hill ,GA /Chatt,TN Posts: 956	yes ,, sounds like the vacuum line is off or broken. __________________ 71 custom 10 swb 72 nova ss 72 nova custom 87 s10 96 burb 94 camry 53 5 window 3100

06-29-2004, 10:19 PM	#3
72superBB Registered User Join Date: Nov 2003 Location: Mandan, ND Posts: 422	anyone have a vacume diagram? thanks __________________ Life is full of choices and a Chevy is the best choice. 1990 Chevy SWB

06-29-2004, 10:22 PM	#4
fast71 Drive it like U stole it Join Date: Mar 2000 Location: tunnel hill ,GA /Chatt,TN Posts: 956	should be one under the hood. look around the throttle body. one line should run to the inside of the car. theyre might be a vacuum ball under the hood __________________ 71 custom 10 swb 72 nova ss 72 nova custom 87 s10 96 burb 94 camry 53 5 window 3100

06-30-2004, 07:47 PM	#6
72superBB Registered User Join Date: Nov 2003 Location: Mandan, ND Posts: 422	anyone else? thanks __________________ Life is full of choices and a Chevy is the best choice. 1990 Chevy SWB

06-29-2004, 10:25 PM	#5
Gee_Emm Account Suspended Join Date: Sep 2000 Posts: 4,002	Check around the firewall or under the battery. My GF's 94 GA was doing the same thing, the hard plastic line under the battery shattered, I spliced it up with a piece of hose and its been good ever since. Only problem now is the damn car is running rich and I can't figure out why.

07-01-2004, 07:42 AM	#7
mrein3 Registered User Join Date: Feb 2000 Location: Center City, MN, USA Posts: 3,253	I wish I had a nickle for every cracked plastic GM vacuum hose I replaced with a piece of rubber hose. Just find the crack or break, finish breaking it if it isn't busted clean, and reattach the two ends with a piece of hose. __________________ '70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN

07-01-2004, 08:17 PM	#8
72superBB Registered User Join Date: Nov 2003 Location: Mandan, ND Posts: 422	I have looked and looked, but only found one vacume hose. The hose goes from the rights side of the motor to a metal tube that is hooked to the side of the wheel well and is curled down with an opening facing down. THe other thing it is doing is under normal to heavy accelaeration, the blowing from the fan stops almost completely. I'll see if I can find a vacume diagram somewhere. Thanks __________________ Life is full of choices and a Chevy is the best choice. 1990 Chevy SWB



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