97 power stroke brake problems
Thread Starter
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Mountain Pass
Joined: Nov 2006
Posts: 182
Likes: 1
97 power stroke brake problems
He guys I am new to this site just today and love it already!! I am having a problem with the brakes on my 97 F-250 crew cab. When I pulled in the drive this morning I noticed the brake pedal felt hard and I had to push it extrmely hard to get it to stop. Aupon further investigation I found that if I drive a few minutes the brake light will go out and the brakes are fine for a few seconds. If I pump the brakes the light will come back on and the pedal gets hard again. I am thinking a vaccum pump because I also notice a knock under the hood and I hope it is just the pump. Also how much vac pressure should the pump make at idle so I can test it. If anyone can help I would appreciate it very much.
Freshman User
Joined: Jul 2006
Posts: 31
Likes: 0
It's the vaccum pump. Mine acted the same way a month ago. New pump and the brakes are better than before!! Took about an hour. bought mine from Autozone. If you don't fix it soon it will belly up on you when you can least afford it.
Search this fourm for "vaccum pump" and you will get a lot of helpful hints on how to install it.
Search this fourm for "vaccum pump" and you will get a lot of helpful hints on how to install it.
Junior User
Joined: Sep 2006
Posts: 76
Likes: 0
From: Maple Ridge, BC
u should have 18 inches of vac at idle at the pump minimum. i had to install a new one bout a month ago too, fairly easy just a pain gettin at one of the bolts and u need to swap the pulley if the new doesnt come with one on it. you will need a special puller to remove and install the pulley. new pump was right around 25 inches at idle.
Junior User
Joined: Sep 2006
Posts: 76
Likes: 0
From: Maple Ridge, BC
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Senior User
Joined: Oct 2006
Posts: 254
Likes: 0
From: Youngstown,ohio
Yeah I dont know why so much stuff on these trucks has to be layered like that.
Makes me wonder what the engineers were smoking when they were designing them.
Makes me wonder what the engineers were smoking when they were designing them.
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Thread Starter
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Mountain Pass
Joined: Nov 2006
Posts: 182
Likes: 1
I just got the new pump installed and it worked great. I saw that i could not get the bolts out without removing the pully first and amazingly I remembered to put them in the holes first. I could not get any of the bolts out until the pully was removed. All in all a pretty easy job and seems to be working great. Now for the lift (fuel) pump. Looks to be a real pain. Does anyone know if I have to replace the cali pump with the same thing or can I use a standard pump. The cali pump has a big disc on to of it that says bosch on it I believe. If anyone has done a pump like this let me know how it went. Thanks again for all the hlep.
Post Fiend
Joined: Oct 2003
Posts: 5,903
Likes: 1
From: MICHIGAN
The turbo MUST come off when replacing a cali pump, I feel your pain. I'm pretty sure the 2 are not interchangable. Maybe replacing fuel line going to the heads will allow a non-cali pump to be installed.