97 F350 7.3 Hard brake pedal - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 8 (permalink) Old 10-27-2012, 02:31 AM Thread Starter
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97 F350 7.3 Hard brake pedal

Truck is dually with flat bed dump, 127K miles. Brakes have been fine, til today. As I left the worksite pulling loaded trailer (about 8k lbs) at first stop, the pedal was hard and I had to stand on it and use trailer brake to stop. Also no normal vacum sound. Several stops like that and then when I pushed the pedal again I heard the vacum and had normal brake. It had intermittant failure all the way home. Thank God for trailer brakes! Got in late and no time to check anything. ANY suggestions? Booster pump maybe? But why intermittant?
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post #2 of 8 (permalink) Old 10-27-2012, 03:15 AM
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Re: 97 F350 7.3 Hard brake pedal

I'd start with the vacuum pump

96 F250 XLT 4x4, 4:10 gears, 5 speed, Tymar intake and HX hose, downpipe, pyro and boost guages, coolant filter, Luc clutch
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post #3 of 8 (permalink) Old 10-27-2012, 04:04 AM
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Re: 97 F350 7.3 Hard brake pedal

Your vacuum pump is dying.

97 F-350 XLT CC DRW 4X4 PSD, 285/75-16 Custom bumpers, Gauges-boost/egt/trans, Swamps IDM, 3.5"dp- 4" exh., 3" Body lift, ES bushings/mounts, Built trans, billet conv, B&M pan, Hayden cooler, Adrenaline, stage 2's, IC, H2E, E-fuel
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post #4 of 8 (permalink) Old 10-27-2012, 01:22 PM Thread Starter
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Re: 97 F350 7.3 Hard brake pedal

Think you're both right. I meant to say vacuum pump not booster. Guess my weak brain was thinking booster pump because the vacuum gives boost to the brakes. Did a little research and it seems to be an easy fix. THANKS!!
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post #5 of 8 (permalink) Old 10-27-2012, 01:54 PM
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Re: 97 F350 7.3 Hard brake pedal

Get one from ford as the Cardone ones don't seem to last long at all.

97 F-350 XLT CC DRW 4X4 PSD, 285/75-16 Custom bumpers, Gauges-boost/egt/trans, Swamps IDM, 3.5"dp- 4" exh., 3" Body lift, ES bushings/mounts, Built trans, billet conv, B&M pan, Hayden cooler, Adrenaline, stage 2's, IC, H2E, E-fuel
ARP's, 910's, Smith Bros. to come
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post #6 of 8 (permalink) Old 10-27-2012, 03:19 PM
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Re: 97 F350 7.3 Hard brake pedal

We got one from these guys: Ford Vacuum Pump - PowerStroke a few years ago, after reading about how bad the [email protected] ones are. They claim it's the same mfr as OEM, no core charge.
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post #7 of 8 (permalink) Old 10-27-2012, 06:26 PM Thread Starter
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Re: 97 F350 7.3 Hard brake pedal

Thanks. I hope the Ford "stealership" has one in stock. Truck needs to roll asap. If not, I'll put on the cardone and then get the Ford pump in hand for later. Cheaper to do that than be down the extra day or two. Have a good weekend.
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post #8 of 8 (permalink) Old 10-30-2012, 01:36 AM Thread Starter
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Re: 97 F350 7.3 Hard brake pedal

Replaced the pump today and all is well. Had to put in the Cardone. Small town and nothing else available. It may last as long as I will work this truck. At my age I don't even buy green banannas!!
Thanks Yall
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