300ZX (Z31) Forums Dedicated to 84-89 ZCars otherwize known as the Z31's

A/C HEATER PROBLEM

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Old Oct 8, 2002 | 08:01 PM
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Joined: Dec 2000
Posts: 342
From: Houston, Tx
Re: A/C HEATER PROBLEM

if yours is a non-turbo, you should have 3 hoses. one is mounted onto a switch there on the vacuum servo above the carbon canister filter. that one should go to your heater **** valve (located at the rear of your engine on pass side, where the hoses go in thru the firewall to the heater core. one of the other 2 goes thru the firewall to a T just on the passenger side near the tranny tunnel. the 3rd goes to the rear of the intake manifold.

If your car is a turbo, there are 4 nipples, 3 like above and the 4th goes to the vacuum pump inside the front of the passenger fender behind the headlight.

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