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1994.5 - 1997 7.3L Power Stroke Diesel  

brake problem

Old Nov 23, 2007 | 07:30 PM
  #1  
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potsiewebber
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Question brake problem

I have read thru some old threads and havent found a definate answer. I have a 97 f250 psd with 218k. auto. I was driving the other day and my brake pedal went hard as a rock and it was very difficult to stop the truck. My first question is is there a vacuum pump or are the brake hydraulics run off the power steering pump? I have heard both.
Thanks,
James
 
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Old Nov 23, 2007 | 07:43 PM
  #2  
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plowhand
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Vacuum pump and it sounds like you have a leak or pump going bad.
 
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Old Nov 23, 2007 | 07:58 PM
  #3  
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tjbeggs
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Yep vacuum pump gone or vacuum leak. The only old body style trucks that are hydroboost were the F-superduty's.
 
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Old Nov 23, 2007 | 08:45 PM
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Thanks alot!
 
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Old Nov 23, 2007 | 09:31 PM
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Yep its a definate yes on the vaccum pump mine went out the other day.

I noticed it clicking when I got out of the truck and when I pulled into our driveway and NO brakes I had to use the e brake to stop. Well I drove another truck to town and got a new pump and when I was swaping out the pully to the new one I tore up the new pump! I had to use half my old pump, the cam looking part, and the new pump part. I was wondering if anyone knows what type of oil goes in there? Right now I just filled it up with delo 400 because thats all I had.
 
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