97 F250 brake issue - Ford Powerstroke Diesel Forum
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post #1 of 15 Old 09-14-2007, 09:49 AM Thread Starter
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97 F250 brake issue

Last week I noticed an large and immediate decrease in the stopping power in my truck. There were no obvious leaks in the system when I went over it. The red brake light would come on somtimes, especially when manuvering in a parking lot when i'm on and off the pedal alot. Seems that there is also now power in them when I first start the truck.

I took it to the shop where they said it was a bad master cylinder resivour. There was only a marginal improvement in performance and the light still comes on and they claim they can't find the problem.

RABS gone bad?
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post #2 of 15 Old 09-14-2007, 03:03 PM
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Here's a bump for ya.

RICK


97 F350 CREW CAB 4x4, 7.3 TURBO DIESEL, DIY INTAKE , TW TUNES
GRAND ROCK POWERFLOW STACK KIT W/5" MITRES
3.55 REARS, 3" DOWNPIPE, FPR SHIMMED WITH GAUGE

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post #3 of 15 Old 09-14-2007, 04:38 PM
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Have you checked the vacuum system and brake booster?
Have you noticed any vacuum problems with the ac or heater?
If so you could have a leak or pump problem.
Are the brakes pulling to either side when you try to stop?

Jim

95 F-250 Extended Cab with 3 Gage Piller Pod and BTS Transmission Super Duty Transmission cooler
74 Jeep CJ-5 304 V8
67 Mustang Coupe 289 V8
2002 Explorer
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post #4 of 15 Old 09-16-2007, 11:27 AM Thread Starter
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The ac and heat are fine and it doesn't pull in any direction
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post #5 of 15 Old 09-18-2007, 08:12 AM
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Check your vacuum pump might be getting weak. Should have around 27lbs at idle.
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post #6 of 15 Old 09-18-2007, 08:23 AM
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i gotta 97 an my breaks arent that good an they pull

1996 dodge 3500
the new toy
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post #7 of 15 Old 09-18-2007, 06:16 PM
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If they are pulling you probably need to check the pads and rotors, and make sure you don't have a sticking pistons in the calipers. Could just be time for a brake job, depending on there condition. This is also a good time to repack the front wheel bearings.

Jim

95 F-250 Extended Cab with 3 Gage Piller Pod and BTS Transmission Super Duty Transmission cooler
74 Jeep CJ-5 304 V8
67 Mustang Coupe 289 V8
2002 Explorer
54 F100 Project Truck
27 Model T Pick-up Project Truck
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post #8 of 15 Old 10-03-2007, 03:47 PM Thread Starter
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The pump is pulling vacuum, though not sure how much, easy to pull finger off. Its pulsating and there is a squeeky howl coming out of the vac tube. This normal?
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post #9 of 15 Old 10-04-2007, 06:10 AM
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Quote:
Originally Posted by Squint1987 View Post
The pump is pulling vacuum, though not sure how much, easy to pull finger off. Its pulsating and there is a squeeky howl coming out of the vac tube. This normal?
Sounds like the pump is bad, I would go to the nearest parts house and see if they would rent you a vac. gauge or you could buy one, they are handy to have around.

Hope this helps
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post #10 of 15 Old 10-04-2007, 06:19 AM Thread Starter
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I plan on picking one up soon as most of my tools are at home. I hate not being able to work on things much myself in college.
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