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 Broke down on the road today!
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65Coronet7165
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 Sat Nov 21 2009, 10:18PM
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[ 426 Hemi CrossRam ]
Registered Member #725
Joined Fri Dec 22 2006, 09:41PM
Location: Warrenton, Virginia
posts 1264
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Well, after nearly 5 years of ownership (and accumulating almost 15K miles) my 67 300 broke down on me while driving.
I was trying to get a friend to a dental appointment this morning. Everything was going pretty well (except for the ongoing carburetor issues) and I was 20 miles from home. We stopped at a light...when...the brake pedal started hissing. I said; "Oh no!" and sure enough, once we got moving again, there was no power brakes.
Drove down the road carefully to the next light and then made a right and parked the car. It was VERY hard to stop without the power assit so driving any distance at any speed above 25 mph was out of the question.
Shut the car off, checked under hood to see if there was anything I could do. Couldn't see anything wrong or hear the hiss on the engine side of the firewall...The power booster was H O T///hot to the touch...not sure if that was normal or not since the booster and master cyl are pretty close to the up-swept exhaust manifold on my 440 TNT engine. Same "hissssssss" heard inside from right where the brake pedal "arm" meets the firewall. And no power brakes.
Drove to a school parking lot where there was plenty of room and Called AAA...Thank God for AAA...someone came 40 min later, towed my car to its storage garage....It was pretty painless...just time wasted and a rescheduled dental appt.
My friend was surprised I was not "bent out of shape". I said why, there was no accident, no one was hurt, the car wasn't damaged and it didn't cost me anything.
Car is 67 300 'vert with Budd disc brakes....dual diaphram power booster. All the brake stuff was "new" 2 1/2 years ago. I looked at some of my receipts...the power booster was "remanufactured" and not new. Thank goodness most of my other brake parts were new, or professionally rebuilt (calipers) by a company that has a vested interest in getting it right. I STILL have my original power booster which was working just fine when I had it replaced by a "newer" unit.
RIDES
67 Chrysler 300 \'vert 440 TNT Dual Quad
'04 Honda Accord V6 six speed coupe
Dahon Espresso 26" 21 speed folding bike
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thrashingcows
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Sun Nov 22 2009, 12:01AM
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[ Blown 500 Stroker ]
Registered Member #113
Joined: Wed Oct 12 2005, 01:10AM
Location: British Columbia, Canada
posts 2668
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Never lost the brakes but had the hiss from under the dash before.
The seal around the shaft on the back of the booster is shot. Why after only 2 years? Maybe the heat? Did it have a protetive boot over it like original? If dust and dirt gets on the rod it can wear out the seal as it goes through it's travel.
Glad nothing was hurt and the car came out of it safely.
Guess you can re-install the original and then send the other one out for a rebuild. This guy in portland is supposed to be top notch!!
http://boosterdeweyexchange.com/
Brian
2002 Chrysler Concorde Lxi 3.5V6/A606 auto
87 Dodge Ram 360/auto 3/4ton full load!
84 Dodge Ram D350 Crew cab, Cummins/5speed
68 Chrysler T/C station Wagon 440/auto
48 Desoto 2dr Sedan Flathead 6/3spd manual
Never trust a fart after a bout of the stomach flu!!
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JustinsNewports
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Sun Nov 22 2009, 01:50AM
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[ 400 4 brl ]
Registered Member #1019
Joined: Wed Jul 04 2007, 06:02PM
Location: Alberta Canada
posts 583
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Hmmm, I'd say Thrash nailed that one. Tho, Personally, I do advocate to all that they should practice (Safely!) driving sans power assist brakes and steering, there's good reasons that all brands ensure it still works even with out the boost. That said, in your case, the first thing I'd confirm is that its the booster and nothing else - blown vaccuum line mainly - and that the master cylinder itself is fine - the brakes will be rock hard but WILL work. Ya got two feet, use 'em both if needed. Provided the brakes themselves are working, I'd not park the old girl on that complaint alone, just be aware of it, if its your only/daily.
1971 Dodge Polara 318 "Winter's Project" 87000miles
1972 Chrysler Newport Royal "Empress" 400 14,350miles 2 door
1972 Chrysler Newport 440 "Old Girl" - 106,800miles 4 door
1981 Dodge PowerRam 150 360 4 barrel 4 speed "BattleWagon" - 99,800kms
1990 Dodge Dynasty 3.3L "DeeNasty" - 327,591kms
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Lister
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Sun Nov 22 2009, 09:05AM
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[ 400 4 brl ]
Registered Member #1047
Joined: Mon Jul 23 2007, 06:03PM
Location: Oklahoma City, Oklahoma, USA
posts 420
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I'm glad that you're safe and that no calamity resulted. I've had booster failure before and you're symptoms have every hallmark of it.
These cars have such easy braking with the assist that it's a shock at how hard they are to stop without the assist. On this I agree with Justin, two foot the pedal if you must.
Lister
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65Coronet7165
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Sun Nov 22 2009, 11:07AM
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[ 426 Hemi CrossRam ]
Registered Member #725
Joined: Fri Dec 22 2006, 09:41PM
Location: Warrenton, Virginia
posts 1264
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Thanks to all for your comments. Yeah, after I parked the call and called the tow truck I considered that I could do a couple of things if the power boost fails again.
2 Foot braking....we have a nice LONG brake pedal
Because of the carburetor issue, the back carb was not closing down all the way and as a result the car was idling WAY fast....harder to keep her stopped if its in drive (the linkage binds sometimes and that prevents the throttle from closing properly). So, once the car is slowed down enough by engine braking, I could have put it in neutral and have less engine "pull" on the brakes.
Anyway, I looked at my receipts and that booster was a "remanufactured" unit. So I'll put the original back on and then send the "failed" unit out the person Thrashing Cows recommends
RIDES
67 Chrysler 300 \'vert 440 TNT Dual Quad
'04 Honda Accord V6 six speed coupe
Dahon Espresso 26" 21 speed folding bike
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starshipconstellation
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Sun Nov 22 2009, 05:43PM
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[ 383 4brl ]
Registered Member #2427
Joined: Tue Oct 06 2009, 09:37AM
Location: Paris, KY
posts 273
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When my original booster failed on my '67 Sport Fury, I was able to stop the car with two foot braking. It wasn't long after my divorce, my only car and no cash for a couple of weeks. I was able to drive it around town and to work being VERY mindful of planning my stops. I didn't like it but it did make driving cars with manual brakes seem easy by comparison.
My St. Regis used to hiss a lot when I put on the brakes. That turned out to be the original master cylinder leaking into my booster. It hadn't killed the booster yet but I'm sure it was only a matter of time. I couldn't figure out where the brake fluid was going at first because there was no visible leaking.
Could a moderator remove my goofed up post below? Thanks.
[ Edited Sun Nov 22 2009, 04:46PM ]
Lover of C-bodies since I was eight years old (1970). Drove a '67 Sport Fury for 13 years, coming back home to a C with my grandfather's 1968 VIP.
The fleet: Mine: '67 Sport Fury (RIP) now a parts car, '68 VIP, '79 Dodge St. Regis, 1999 Chrysler Concorde Lxi. Hers: 2008 Dodge Ram 1500 V6
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starshipconstellation
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Sun Nov 22 2009, 05:44PM
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[ 383 4brl ]
Registered Member #2427
Joined: Tue Oct 06 2009, 09:37AM
Location: Paris, KY
posts 273
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starshipconstellation wrote: ...
When my original booster failed on my '67 Sport Fury, I was able to stop the car with two foot braking. It wasn't long after my divorce, my only car and no cash for a couple of weeks. I was able to drive it around town and to work being VERY mindful of planning my stops. I didn't like it but it made driving cars with manual brakes seem easy by comparison
My St. Regis used to hiss a lot when I put on the brakes. That turned out to be the original master cylinder leaking into my booster. It hadn't killed the booster yet but I'm sure it was only a matter of time. I couldn't figure out where the brake fluid was going at first because there was no visible leaking.
Lover of C-bodies since I was eight years old (1970). Drove a '67 Sport Fury for 13 years, coming back home to a C with my grandfather's 1968 VIP.
The fleet: Mine: '67 Sport Fury (RIP) now a parts car, '68 VIP, '79 Dodge St. Regis, 1999 Chrysler Concorde Lxi. Hers: 2008 Dodge Ram 1500 V6
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65Coronet7165
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Sun Nov 22 2009, 07:14PM
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[ 426 Hemi CrossRam ]
Registered Member #725
Joined: Fri Dec 22 2006, 09:41PM
Location: Warrenton, Virginia
posts 1264
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I'll check the master cylinder too and make sure that is not part of the issue.
My car has the Budd brakes...I'm sure if it had drums instead of the disc brakes I would have been able to drive it instead of getting it towed. The Budd calipers are HUGE and hold a lot of brake fluid.
RIDES
67 Chrysler 300 \'vert 440 TNT Dual Quad
'04 Honda Accord V6 six speed coupe
Dahon Espresso 26" 21 speed folding bike
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68Cbarge
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Sun Nov 22 2009, 07:14PM
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[ ]
Registered Member #319
Joined: Sun Feb 26 2006, 09:46PM
Location: Kingston,Ontario
posts 5111
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While you are at it,get that single 4bbl on there.
Sounds like the dual quads are more headaches than what they are worth.
'68 New Yorker 4 door hardtop 440 loaded! SOLD
'68 Newport Custom 4 door hardtop Barge On A Budget project
1987 Diplomat daily grinder
2006 Chrysler 300C HEMI!! getting traded in on a new Pink Challenger R/T soon (now in D1 status!! Expecting August 28,2010)
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1973_73_1973
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Sun Nov 22 2009, 11:38PM
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[ 318 2brl ]
Registered Member #2386
Joined: Mon Sep 14 2009, 10:29PM
Location: ma
posts 76
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Back in the early 1990's when I had a 73 Imperial, 3 miles from home I lost my power brakes when my motor mount went..... Because the engine physically lifted up, it pulled the power booster vacumm brake hose and snapped it like a twig.....lost power brakes... Driving the rest of my 3 miles to get home was pretty hairy......had to feather that gas pedal so the motor wouldn't damage anything else.. GOD how I miss that car... sold it in 1995 for a mere $2200 (Calif car).
Any way...... thought I'd share that with ya..
Losing power brakes on a massive C-body is frightening.
73 NY Brougham
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starshipconstellation
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Mon Nov 23 2009, 10:40AM
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[ 383 4brl ]
Registered Member #2427
Joined: Tue Oct 06 2009, 09:37AM
Location: Paris, KY
posts 273
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65Coronet7165 wrote: ...
I'll check the master cylinder too and make sure that is not part of the issue.
My car has the Budd brakes...I'm sure if it had drums instead of the disc brakes I would have been able to drive it instead of getting it towed. The Budd calipers are HUGE and hold a lot of brake fluid.
I had drums on my '67. I can't imagine trying to push against a dead booster with the Budd brakes!
Lover of C-bodies since I was eight years old (1970). Drove a '67 Sport Fury for 13 years, coming back home to a C with my grandfather's 1968 VIP.
The fleet: Mine: '67 Sport Fury (RIP) now a parts car, '68 VIP, '79 Dodge St. Regis, 1999 Chrysler Concorde Lxi. Hers: 2008 Dodge Ram 1500 V6
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