Vacuum pump problem?
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From: Cape Cod Ma
Vacuum pump problem?
Hey fellahs so got home from work today and went to move my 1997 and the brake pedal was stiff as hell and hardly could stop while backing up. I just replaced the brake pads on the passenger side 3 days ago and didn't get time to drive the truck much since then, so is this problem definently the vacuum pump or could it be a caliper? Slide pins? Master cilinder? Thanks for the help in advance
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From: western SD
That is one of the things that points to a bad pump. The heater/AC will default to defrost no matter where the control is pointed to is another. Test the pump by pulling the hose off the brake booster, and seeing how much vacuum is there. You should get at least 19 inches there with engine running.
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From: Cape Cod Ma
Just went outside and started the truck put the heat on the vent foward position and it blows? Does that mean the vaccum pump is fine? After doing the front passenger side brake pads the other day I drove about 2 miles everything seemed fine other than the peddle was a bit soft even after pumping it, but idk if that's normal was my first brake job? No leaks noticed anywhere and fluids full
Lead Driver
Joined: Mar 2006
Posts: 5,096
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From: western SD
Pretty simple.
1-get a vacuum gauge.
2-pull the hose off of the booster
3-insert end of gauge in the hose removed from the booster
4-with engine running, you should have at least 19 inches of vacuum.
1-get a vacuum gauge.
2-pull the hose off of the booster
3-insert end of gauge in the hose removed from the booster
4-with engine running, you should have at least 19 inches of vacuum.
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From: Cape Cod Ma
So if I don't get 19inches of vaccum doing this test the vaccum pump is toast? And then I should test the brake booster or master cilinder? And how do I check those?
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Hey fellahs so got home from work today and went to move my 1997 and the brake pedal was stiff as hell and hardly could stop while backing up. I just replaced the brake pads on the passenger side 3 days ago and didn't get time to drive the truck much since then, so is this problem definently the vacuum pump or could it be a caliper? Slide pins? Master cilinder? Thanks for the help in advance
Just went outside and started the truck put the heat on the vent foward position and it blows? Does that mean the vaccum pump is fine? After doing the front passenger side brake pads the other day I drove about 2 miles everything seemed fine other than the peddle was a bit soft even after pumping it, but idk if that's normal was my first brake job? No leaks noticed anywhere and fluids full
In the first post I quoted, you said the pedal was stiff, and then in the other post you said it was soft. That is two different symptoms with different probable causes. Did you have the brakes lines loose when you did the brakes? If so, did you bleed the brakes?
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From: Cape Cod Ma
I am not in anyway trying to be a smart a$$ so don't take this that way, but you should never just do brakes on just one side. Always do both sides when you do them. Same with bearings and ball joints, etc.
In the first post I quoted, you said the pedal was stiff, and then in the other post you said it was soft. That is two different symptoms with different probable causes. Did you have the brakes lines loose when you did the brakes? If so, did you bleed the brakes?
In the first post I quoted, you said the pedal was stiff, and then in the other post you said it was soft. That is two different symptoms with different probable causes. Did you have the brakes lines loose when you did the brakes? If so, did you bleed the brakes?
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