hard brake pedal effort
Thread Starter
Instructor
Joined: Aug 2004
Posts: 111
Likes: 0
From: Wentzville MO
hard brake pedal effort
I have all new pads and my 92 stops okay but if I make have to lean on them very much the pedal effort seems too hard to get very little additional stopping power. Compared to my other cars with ABS that can really grab hard without any real pedal effort. What could be going on?
Thanks
Thanks
Le Mans Master
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
and if you have the plastic one, they are suseptible to heat and may have a crack you can't see without removal-per another forum members post. Also, if it is, IMHO, I'd replace it with the metal booster.BTW, do you see any RPM difference when you are parked and apply the brakes? that's another indication of a booster with a vacumn leak (crack if you will).
Last edited by rick lambert; Jan 10, 2006 at 07:36 PM.
Race Director
Joined: Feb 2003
Posts: 11,397
Likes: 22
From: Rockledge Florida
St. Jude Donor '07 thru '14, '24
Mid America makes a metal booster, but I think it's for 85 to 91.
I don't know if it will fit the 92.
http://www.madvet.com/shop?frame=1.115.3994
I don't know if it will fit the 92.
http://www.madvet.com/shop?frame=1.115.3994
Pro
Joined: Nov 2005
Posts: 557
Likes: 0
St. Jude Donor '06-'07
Hey Rick I just installed a new brake booster because my old one was bad and the RPM's changed like you said when I used the brakes. Anyways I just installed a NEW metal one and the RPM's still change. Do you think my new one is bad too?
Drifting
Joined: Sep 2004
Posts: 1,638
Likes: 3
Originally Posted by blown66
Thanks for the tip. I bought it and will change it this weekend.
anyone who has went with these guys http://www.hotrodsusa.com/store/boosterchev.html
have been very happy - the units go in - do not require rod adjustment and work great. The new metal unit costs 129 bucks - they get it to you in 2 or 3 days.
Good luck to ya!
Last edited by Carl Johansson; Mar 28, 2006 at 01:57 PM. Reason: fixed typos
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Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
I have a 94 with the same symptoms of which I posted a detailed description 3/27/06 in general area (poor braking). With engine off pedal is like a rock and does not sink. With engine on pedal does not sink but I can push the pedal to the floor. This can happen while im driving if I really get on the brakes. My booster is metal and no RPM drop. My responces have been to change the master cylinder or fluid. I will bleed it good before I do the master. Just starting on my problem. Everything individually looks good but as a system works bad.
Last edited by pcolt94; Mar 28, 2006 at 12:00 PM. Reason: Additional information
Drifting
Joined: Sep 2004
Posts: 1,638
Likes: 3
If it goes to the floor when the engine is running - thats not the booster!
Originally Posted by pcolt94
I have a 94 with the same symptoms of which I posted a detailed description 3/27/06 in general area (poor braking). With engine off pedal is like a rock and does not sink. With engine on pedal does not sink but I can push the pedal to the floor. This can happen while im driving if I really get on the brakes. My booster is metal and no RPM drop. My responces have been to change the master cylinder or fluid. I will bleed it good before I do the master. Just starting on my problem. Everything individually looks good but as a system works bad.
Drifting
Joined: Sep 2004
Posts: 1,638
Likes: 3
Originally Posted by Timmah!
...anyone have a recommendation for a new booster (metal sounds like a good idea) for a 94? I see them for every other year, but not mine!
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
As far as I know 93 to 96 takes the plastic booster unless it is a ZR1 then that is a a different booster. The ZR1 boosters had a dual diaphram setup. I just installed a new GM plastic booster into a 96 LT4 car. There was no other boosters available for this car. I took the original booster into a rebuilder and they just laughed 
As far as they are concerned these are not rebuildable, the housing breaks when they attempt to take them apart, and plus they don't have the kits available to them to rebuild them. The new GM units are still available but they are not cheap.
As far as they are concerned these are not rebuildable, the housing breaks when they attempt to take them apart, and plus they don't have the kits available to them to rebuild them. The new GM units are still available but they are not cheap.