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Old 11-06-2020, 02:33 PM   #5
jchav62
1962 C-10
 
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Join Date: Apr 2005
Location: Las Vegas, New Mexico
Posts: 4,978
Re: When I apply the brakes my idle drops too much

I'm assuming you have a vacuum power brake booster. Must have a vacuum leak.. either in the booster itself or possibly in the vac line or connection? Disconnect the vacuum line, plug it and see if it makes a difference in the idle.
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Joseph Chavez
"See the USA in a Chevrolet!!"
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1962 C10 Shortbed Fleetside 327/th350 GV overdrive
1974 C10 Longbed Fleetside 350/th350 "The Trash Truck"
1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4
2015 GMC Sierra SLE 1500 4x4
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