Help!! Brake Pedal Won't Come Back Up - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Blue85 · 08-08-2006, 07:56 PM

My brake pedal won't come back up after being applied with engine running, but when I unhook the vaccum line going to the booster, it comes back up right away, could it be the booster or possibly the valve thingy(have no idea what it is called) on the vaccum line going to the booster. PS the booster is from a 92 chev truck if that matters

Longhorn Man · 08-08-2006, 08:00 PM

i've had a bad booster do this.
is this a new set up, or have you been running it for a while?

Blue85 · 08-08-2006, 08:37 PM

Its a new setup, but a junyard booster, thinkin mabye the rubber inside the booster got hot when i welded the rod to make it longer, just a series of spot welds so it didnt get to hot , and I cooled it down right away. Is there a way to test the booster? or what about bleeding it again?

68speedalert · 08-08-2006, 09:40 PM

http://67-72chevytrucks.com/vboard/s...d.php?t=205018

Follow this thread for how to check a booster.

You might try to spray your favorite monkey piss (wd40?) on the linkage pivots BETWEEN the booster and the firewall. I've had them rust up and cause soome problems like that.

Spray them and pump the holy crap out of the pedal. Spray and repeat....spray and repeat....spray and repeat.

Worth a try.

Blue85 · 08-08-2006, 11:32 PM

checked the booster and it was working fine, popped the cap off of the master and put it back on and now everthing works fine. I don't have a clue what happened, im just happy it works now

08-08-2006, 07:56 PM	#1
Blue85 Oilfield Trash Join Date: Sep 2003 Location: Raymore, Sk, Canada, Earth Posts: 3,171	Help!! Brake Pedal Won't Come Back Up My brake pedal won't come back up after being applied with engine running, but when I unhook the vaccum line going to the booster, it comes back up right away, could it be the booster or possibly the valve thingy(have no idea what it is called) on the vaccum line going to the booster. PS the booster is from a 92 chev truck if that matters __________________ 14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr.

08-08-2006, 08:00 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Help!! Brake Pedal Won't Come Back Up i've had a bad booster do this. is this a new set up, or have you been running it for a while?

08-08-2006, 08:37 PM	#3
Blue85 Oilfield Trash Join Date: Sep 2003 Location: Raymore, Sk, Canada, Earth Posts: 3,171	Re: Help!! Brake Pedal Won't Come Back Up Its a new setup, but a junyard booster, thinkin mabye the rubber inside the booster got hot when i welded the rod to make it longer, just a series of spot welds so it didnt get to hot , and I cooled it down right away. Is there a way to test the booster? or what about bleeding it again? __________________ 14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr.

08-08-2006, 09:40 PM	#4
68speedalert Semi-Senior Member Join Date: Feb 2003 Location: Washington, MO Posts: 390	Re: Help!! Brake Pedal Won't Come Back Up http://67-72chevytrucks.com/vboard/s...d.php?t=205018 Follow this thread for how to check a booster. You might try to spray your favorite monkey piss (wd40?) on the linkage pivots BETWEEN the booster and the firewall. I've had them rust up and cause soome problems like that. Spray them and pump the holy crap out of the pedal. Spray and repeat....spray and repeat....spray and repeat. Worth a try. __________________ '68 50th Anniversery LWB Custom Fleetside, '77 305 v-8, turbo 350, factory speed alert (still works), '71 drivetrain w/front discs. Some call it ugly yellow, others call it Ochre '83 Jeep CJ-7, <80,000 miles, original owner '04 Chevy Suburban, 4x4, 2500, 6.0 ltr, Predator Diablo programmer '95 GMC K1500 Extended cab

08-08-2006, 11:32 PM	#5
Blue85 Oilfield Trash Join Date: Sep 2003 Location: Raymore, Sk, Canada, Earth Posts: 3,171	Re: Help!! Brake Pedal Won't Come Back Up checked the booster and it was working fine, popped the cap off of the master and put it back on and now everthing works fine. I don't have a clue what happened, im just happy it works now __________________ 14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr.



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