1981 z 28 Vacuum hoses

45

Asked by Jul 19, 2014 at 11:16 AM about the 1981 Chevrolet Camaro Z28

Question type: Maintenance & Repair

Where can I find a diagram of all the vacuum hoses for my 1981 camaro z28 350 engin
the car useless ok in park but if I put it in reverse or in drive with the acon it steals I think
it may be a vacuum hose but not sure . Any help would be greatful.

6 Answers

45

Asked by TonysZ28 about a second ago about the 1981 Chevrolet Camaro Z28 Question type: Maintenance & Repair Where can I find a diagram of all the vacuum hoses for my 1981 camaro z28 350 engin the car idels ok in park . but if I put the car in reverse or in drive with the ac on it stalls. I think it may be a vacuum hose but not sure . Any help would be grateful.

2 of 2 people found this helpful.
68,435

There's an idle speed up solenoid at the carburetor. When you switch on the A/C the solenoid is energized and speeds up the idle to compensate for the added load of the A/C compressor. HTH. -Jim

1 of 1 people found this helpful.
45

Thanks I will look into that and see If it works does it work the same way when I put it in reverse

1 of 1 people found this helpful.
68,435

Yes, when you select any of the A/C settings on the dash control panel the solenoid is energized. It is also energized when defrost is selected. No matter what gear you're in. It's a single, usually green, wire that plugs into the solenoid. HTH. -Jim

45

the car also stalls when the ac is off and i put it into reverse.the car usually needs to warm up for about 5 minutes then she idles .but if i put it into reverse she goes to stall . what is the proper rpm when the car is idling. 350 v8

1 of 1 people found this helpful.
68,435

In drive, fully warmed up, with the A/C off, and the vacuum advance hose, at the distributor, disconnected and plugged, the idle speed should be 650 RPMs. Now if this is only a cold issue the fast idle setting and automatic choke may nneed attention as well. HTH. -Jim

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