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02-16-2017, 06:08 PM
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#1 |
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Registered User
 
Join Date: Jun 2011
Location: Bradenton, Fla.
Posts: 1,100
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Brake peddle feeling different
1988 GMC C2500 5.7 ...I realized, after turning down my stereo, my brake peddle makes an air/ hissing sound.
Man-o-man.... It's been a long time, but I could swear I had that problem before. Any thoughts of a cause, before I take it to my mechanic? Sometimes I loose a little of brake power.... ( maybe it's time to up-grade my master cylinder while I'm at it ?)
__________________
'70 GTO Midnight Blue '88 GMC Sierra SLE 392,000 miles-(2018) sold to Classic car shop in Germany. '93 Cadillac STS Black '93 Mercedes SL 500 Teal '86 Yamaha FZ750 - 15,000 RPM '86 Yamaha FJ1200 - Criminally Fast 2016 Ferrari 488 GTB, I drive it - don't own it. '05 GMC Yukon XL , SLT 4wd ( just purchased 2018) |
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02-16-2017, 08:37 PM
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#2 |
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driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,692
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Re: Brake peddle feeling different
Its your brake booster. You're loosing vaccum when you hit the pedal. New booster = problem solved.
__________________
-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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02-16-2017, 09:27 PM
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#3 | |
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Registered User
Join Date: Jun 2011
Location: Bradenton, Fla.
Posts: 1,100
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Re: Brake peddle feeling different
Quote:
Time for a new one...... fabulous....
__________________
'70 GTO Midnight Blue '88 GMC Sierra SLE 392,000 miles-(2018) sold to Classic car shop in Germany. '93 Cadillac STS Black '93 Mercedes SL 500 Teal '86 Yamaha FZ750 - 15,000 RPM '86 Yamaha FJ1200 - Criminally Fast 2016 Ferrari 488 GTB, I drive it - don't own it. '05 GMC Yukon XL , SLT 4wd ( just purchased 2018) |
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02-20-2017, 03:15 PM
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#4 |
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Registered User
Join Date: Jun 2011
Location: Bradenton, Fla.
Posts: 1,100
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Re: Brake peddle feeling different
Up-date..
Just bought a brake booster & a new 2002 Master cylinder & brake fitting adapter. ( Break Best @ O'Reilly auto parts.) for my '88 GMC
__________________
'70 GTO Midnight Blue '88 GMC Sierra SLE 392,000 miles-(2018) sold to Classic car shop in Germany. '93 Cadillac STS Black '93 Mercedes SL 500 Teal '86 Yamaha FZ750 - 15,000 RPM '86 Yamaha FJ1200 - Criminally Fast 2016 Ferrari 488 GTB, I drive it - don't own it. '05 GMC Yukon XL , SLT 4wd ( just purchased 2018) |
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02-20-2017, 06:24 PM
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#5 |
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driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,692
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Re: Brake peddle feeling different
Your gonna like how this ends.
__________________
-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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