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Topic: short?

in Forum: C3 General Discussion


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short? (1/7)
 4/10/20 8:42am
legsdiamondLifetime Member
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St. Louis, MO - USA

Vette(s):
1976 Corvette


Joined: 2/5/2010
Posts: 65

Hi All,

 

When I engage my brakes the engine revs up a little and the gauges needle move. Could someone help me with this problem?

 

Thanks!



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Re: short? (2/7)
 4/10/20 1:57pm
F4GaryGold Member
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Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.


Joined: 8/26/2006
Posts: 1409

Might be a vacuum problem.



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Re: short? (3/7)
 4/10/20 4:49pm
legsdiamondLifetime Member
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St. Louis, MO - USA

Vette(s):
1976 Corvette


Joined: 2/5/2010
Posts: 65

I really appreciate your help.... do you think I should  replace all the vacuum hoses. Maybe that will eliminate the vacuum leak?

 

Thanks



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Re: short? (4/7)
 4/10/20 7:18pm
F4GaryGold Member
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Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.


Joined: 8/26/2006
Posts: 1409

I would plug any vacuum lines that come from the engine and see if it still does it when you pump the brake pedal.

I am assuming you have power brakes.



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Re: short? (5/7)
 4/10/20 9:03pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 20128

ALL of the gauges, or one in particular?

Engine rpm rise with power brake application usually means the booster is leaking, or the check-valve is faulty.



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Re: short? (6/7)
 4/16/20 10:19am
legsdiamondLifetime Member
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St. Louis, MO - USA

Vette(s):
1976 Corvette


Joined: 2/5/2010
Posts: 65

I believe it's all the gauges and the engine revs a little when applying brakes.



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Re: short? (7/7)
 4/16/20 10:20am
legsdiamondLifetime Member
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St. Louis, MO - USA

Vette(s):
1976 Corvette


Joined: 2/5/2010
Posts: 65

Yes. I do have power brakes.... I'll try plugging all vac lines this weekend.

 

Thanks



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