Brakes Bad after S-TRIM install...HELP!!

quick89gt · 04-29-2001, 05:24 PM

Well, the car runs great, but unfortunately, the brakes are all screwed up. The pedal is really, really hard to push and it takes everything I have to get the car to stop. I checked for loose vaccuum lines and didn't see any. The only line I saw was the one coming off of the Brake Booster to the vaccuum tree on the firewall. I unplugged one of the lines on the tree and put a vaccuum gauge up to it...and it read 9lbs of vaccuum. Does this seem low? I obviously had to use one of the ports on the tree for my FMU and then the MSD-BTM spliced into that line also...and all of those connections are tight. So, does anyone have a clue what this could be???? Josh

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'89 GT, T-5,
Vortech S-Trim, GT-40P heads, MAC 1 5/8" headers, MAC Off-Road H-Pipe, 2 1/2" Flowmasters, Edelbrock 65mm T.B., Trick Flow Intakes, Crane 2031 cam, 1.7 Roller Rockers, Screamin' Deamon Coil, 255lph Fuel Pump, T-Rex, SVO Motorsport Clutch, Adjustable Fuel Pressure Regulator, Formula GP Suspension, MAC Upper & Lower Control Arms, FMS 3.73 Gears.
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gt93mustang · 04-29-2001, 05:35 PM

On the Crane cam, 9in/HG's is a little low. I would guess that there is a vacuum leak somewhere. You might want to try the carb cleaner trick to see if you can find the general location of the leak.

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MAC equal length headers, MAC Off-Road H-Pipe, Flowmaster mufflers, 373's, March ram-air kit, underdrive pulleys, 73mm MAF, 75mm TB, Saleen Intake (ported), Edelbrock 6037 heads (ported, polished, 3 angle valve-job 255CFM @.500), 1.6 FMS RR's, Wolverine 1087 Cam, 24lb injectors, MSD 6AL, Subframe connectors, Griggs Adustable Lower Control Arms, Lakewood 50/50 shocks, SSM Upper Control Arms... and probably some more in there I forgot

quick89gt · 04-29-2001, 05:39 PM

what is the carb cleaner trick?

gt93mustang · 04-29-2001, 05:41 PM

Spray it around your engine and see if it revs. If it does, you found your leak.

quick89gt · 04-29-2001, 08:25 PM

just anywhere in my engine compartment?

------------------
*************************
'89 GT, T-5,
Vortech S-Trim, GT-40P heads, MAC 1 5/8" headers, MAC Off-Road H-Pipe, 2 1/2" Flowmasters, Edelbrock 65mm T.B., Trick Flow Intakes, Crane 2031 cam, 1.7 Roller Rockers, Screamin' Deamon Coil, 255lph Fuel Pump, T-Rex, SVO Motorsport Clutch, Adjustable Fuel Pressure Regulator, Formula GP Suspension, MAC Upper & Lower Control Arms, FMS 3.73 Gears.
*************************

04-29-2001, 05:24 PM	#1
quick89gt Registered Member Join Date: Apr 2000 Location: O'Fallon, IL Posts: 243	Brakes Bad after S-TRIM install...HELP!! Well, the car runs great, but unfortunately, the brakes are all screwed up. The pedal is really, really hard to push and it takes everything I have to get the car to stop. I checked for loose vaccuum lines and didn't see any. The only line I saw was the one coming off of the Brake Booster to the vaccuum tree on the firewall. I unplugged one of the lines on the tree and put a vaccuum gauge up to it...and it read 9lbs of vaccuum. Does this seem low? I obviously had to use one of the ports on the tree for my FMU and then the MSD-BTM spliced into that line also...and all of those connections are tight. So, does anyone have a clue what this could be???? Josh ------------------ *********************** '89 GT, T-5, Vortech S-Trim, GT-40P heads, MAC 1 5/8" headers, MAC Off-Road H-Pipe, 2 1/2" Flowmasters, Edelbrock 65mm T.B., Trick Flow Intakes, Crane 2031 cam, 1.7 Roller Rockers, Screamin' Deamon Coil, 255lph Fuel Pump, T-Rex, SVO Motorsport Clutch, Adjustable Fuel Pressure Regulator, Formula GP Suspension, MAC Upper & Lower Control Arms, FMS 3.73 Gears. ***********************

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04-29-2001, 05:35 PM	#2
gt93mustang Registered Member Join Date: Feb 1999 Location: Kennesaw, Georgia, USA Posts: 252	On the Crane cam, 9in/HG's is a little low. I would guess that there is a vacuum leak somewhere. You might want to try the carb cleaner trick to see if you can find the general location of the leak. ------------------ MAC equal length headers, MAC Off-Road H-Pipe, Flowmaster mufflers, 373's, March ram-air kit, underdrive pulleys, 73mm MAF, 75mm TB, Saleen Intake (ported), Edelbrock 6037 heads (ported, polished, 3 angle valve-job 255CFM @.500), 1.6 FMS RR's, Wolverine 1087 Cam, 24lb injectors, MSD 6AL, Subframe connectors, Griggs Adustable Lower Control Arms, Lakewood 50/50 shocks, SSM Upper Control Arms... and probably some more in there I forgot

04-29-2001, 05:39 PM	#3
quick89gt Registered Member Join Date: Apr 2000 Location: O'Fallon, IL Posts: 243	what is the carb cleaner trick?

04-29-2001, 05:41 PM	#4
gt93mustang Registered Member Join Date: Feb 1999 Location: Kennesaw, Georgia, USA Posts: 252	Spray it around your engine and see if it revs. If it does, you found your leak.

04-29-2001, 08:25 PM	#5
quick89gt Registered Member Join Date: Apr 2000 Location: O'Fallon, IL Posts: 243	just anywhere in my engine compartment? ------------------ *********************** '89 GT, T-5, Vortech S-Trim, GT-40P heads, MAC 1 5/8" headers, MAC Off-Road H-Pipe, 2 1/2" Flowmasters, Edelbrock 65mm T.B., Trick Flow Intakes, Crane 2031 cam, 1.7 Roller Rockers, Screamin' Deamon Coil, 255lph Fuel Pump, T-Rex, SVO Motorsport Clutch, Adjustable Fuel Pressure Regulator, Formula GP Suspension, MAC Upper & Lower Control Arms, FMS 3.73 Gears. ***********************