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stashu11
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AUG 18, 09:49 PM
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Just some brake info. I had the bigger brake booster installed with Rodney Dickmans banjo. Initially it worked fine, but after a couple hundred miles the brakes acted up. It's like they were no longer power brakes. They worked, but the pedal was stiff, and slow to release. I took it to my mechanic and he thought it had to do with the small shaft between the new booster and the master. Nothing worked. So, he started thinking a vacuum issue. He pulled off the hose and shot some air into the hose. He said the air should only flow one way. Anyhow, at that point he put the hose back on and the brakes worked normally. I don't know exactly what the issue was, but this might help someone with a similar problem.
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Vintage-Nut
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AUG 18, 11:35 PM
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Perhaps the Power Brake Booster Check Valve was 'stuck'? {ACDelco 179-1266} ------------------
Original Owner of a Silver '88 GT
Under 'Production Refurbishment' @ 136k Miles
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stashu11
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AUG 19, 09:11 AM
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Thanks for your response. If it happens again, that's the first place I'll look.
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stashu11
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AUG 19, 09:20 PM
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Does that part number apply to all years? Mine is an 88'
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Vintage-Nut
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AUG 19, 09:47 PM
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My is a '88 too, so I KNOW it with fit BUT you said:
| quote | | I had the bigger brake booster installed with Rodney Dickmans banjo |
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I don't know about the 'bigger brake booster' check valve part number....? [This message has been edited by Vintage-Nut (edited 08-19-2025).]
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stashu11
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AUG 19, 09:50 PM
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Thanks so much. I'm going to replace mine, just in case. It looks easy enough for even me to do
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stashu11
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AUG 30, 09:50 PM
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Update, I replaced the check valve with the part number you provided. It fit the slightly larger S-10 brake booster perfectly. Thanks so much for your response. It's fixed because of you😊
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Vintage-Nut
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AUG 30, 11:44 PM
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Excellent!
If you think I gave you good advice, and if it isn't too much inconvenience; can you please give me a positive rating on this thread? 
{I need all the help I can get...}
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stashu11
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AUG 31, 09:11 AM
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I would be more than happy too, but I'm not familiar with doing so. I looked all over and can't find where to do it. Can you point me in the right direction?
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Vintage-Nut
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AUG 31, 03:58 PM
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With pleasure...
When you're logged-in and in this thread; you'll see me in the far left when I posted comments....
In a "Vintage-Nut" box, click/open the "Rate this member" box
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