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July 13th, 2008, 01:14 PM
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"Idiot" brake light coming on when applying brakes - HELP!
Hi, this is my first post as I'm new to the forum. I have an 87 GN and haven't really done that much to it except on my own. I live in Western CT. I'm hoping someone can help me out with information and a problem I'm having.
First of all, does anybody know a good TR mechanic in CT (Waterbury/Danbury area)? if so I would appreciate the contact info. #2. Recently, after putting all new brake shoes, drums and rotors on my 87 GN the brake light on my dashboard started coming on when applying the brakes. The car still has full braking power but the pedal seems a little "spongy". Has anyone else had this problem or can anyone offer some input? Thanks.     
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July 13th, 2008, 01:19 PM
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Is it the powermaster system on the GN? Maybe you need to bleed the air out of the system more. The accumulator might be going bad also on the powermaster unit.
__________________
1987 GN 3" ATR downpipe,PTE TA 49 turbo, adj. wastegate,adj. fpr. Art Carr shift kit 2 1/2" Hooker ex. 3" Hi flow gutted cat, aero chamber muffs. 9"K&N filter, 60/65lb. mototron injectors,heads pocket ported, 3 angle valve job, LT1 valve springs, 340 walbro fp.hot wired, plenum spacer, 160 therm. cross drilled slotted rotors, vacuum brake conv. Kirban GNX style rims,48k on car, 93 Turbo Tweak chip, 2.1 scanmaster,knock guage, 3" LT1 Maf w/translator, VDO guages,manual boost controller.
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July 16th, 2008, 11:56 AM
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Quote:
Powermasters need maintenance, if you want to take the easy route, grab a brake pedal and master cyl. from an old non-turbo buick, and run vacuum brakes. I was sick of my powermaster failing, and having no brakes in traffic.
__________________
1987 GN
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July 16th, 2008, 12:17 PM
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+1 don't waste time trying to figure it out....put vac brakes on!
__________________
My Buick... http://s139.photobucket.com/albums/q295/jcawley3/Buick/ 120K stock block, stock intercooler, 4" big mouth CAI, 60lbs inj TT Alky chip to match, 340 walbro hotwired, translater, 3.5 MAF, SMC alky, 3" DP with cut out, GT6162 BB Turbo, Red Stripe converter  , powerlogger, RJC powerplate and boost controller, ATR exhaust no cat
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July 16th, 2008, 02:32 PM
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Welcome to the site. At the link below, you should be able to find all of the info you need on the powermaster system, as well as troubleshooting guide.
Sounds like the accumulator ball or air in the lines to me if it is a powermaster system. Brake System
__________________
Intercooled 85 GN, Girdled+studded Block, PT-51, Ported irons, 60# Mototrons, 206 Roller cam, Walbro 340 Hotwired, trans cooler, 3" Downpipe, Adj FPR, F-Body Radiator with Dual Fans, PS FMIC, 3000 stall, Hooker 2.5 exhaust 11.09 @123
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July 16th, 2008, 04:25 PM
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Switch or accum sounds like.
When you see the prices of these parts you may want to consider the vac route. I rebuilt my PM and replaced every thing, sw, accum, motor at the same time and she lastedabout 2 years before the sw started messing up and the sw being over 150 I said screw it and swapped brakes hold as much boost and no down sides.
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USAF POWER PRO 87GN- GT3255E, Turbosaver, Razors PAC Alky, ESP FMIC, 3" THDP, TA Headers, 3"ATR Crossflow, TT chip, 38's, Pats 3k stall, QA1 r's front, UMI rear Ups(adj) & Lows, HR Bar. 03' G35 Coupe 5At, Blk on Blk, Leather, 18's, Prem pkg, Bose, JDM clears....wifes car 05' Harleys Wide Glide- Glacier White Pearl w/ EFI, Stage 1 & SE Pro Pipe. Duece- Sunglo and Chopper Blue w/ EFI, Stage 1 & SE Double Barrel.
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