No power brakes, don't know what to do

[Lamont_24]

I was driving home from work today and my brakes were working fine until I started stopping at a red light and I had no power brakes. If I push the peddle really hard it will still stop quick but there's just no help when I push. I checked fluid and it's a little low, a little above the half way mark. Would that cause it? I checked all connections and they were all tight. Do I need to bleed them? Need help guys!

 

[jschildm]

Vacuum Pump?

 

[Lamont_24]

Makes sense. Cause it was making a weird noise, and then stopped so I'll check it

 

[SDS97_7.3]

Yeah, sounds like when the vacuum pump goes. If thats it, it's an easy fix.

 

[Lamont_24]

I pulled the line off that goes to the brake booster and I don't know how much pressure it will make but I can kind of feel it pulse sort of. I put it up to my mouth and it wasn't sucking or blowing

 

[Cat_rebel]

I pulled the line off that goes to the brake booster and I don't know how much pressure it will make but I can kind of feel it pulse sort of. I put it up to my mouth and it wasn't sucking or blowing

 

[Bobby@cp]

I pulled the line off that goes to the brake booster and I don't know how much pressure it will make but I can kind of feel it pulse sort of. I put it up to my mouth and it wasn't sucking or blowing

WTF



Yeah your vacuum pump is bad.

 

[Lamont_24]

I didn't know what to do? Tractors don't use vacuum pumps for brakes. But I changed the vacuum pump and they work great. Thanks for the helps guys

 

[SDS97_7.3]

I didn't know what to do? Tractors don't use vacuum pumps for brakes. But I changed the vacuum pump and they work great. Thanks for the helps guys

Yeah, vacuum pumps run the brakes on these trucks, just be glad you weren't at 65+ when it happened. :doh:

 

[Lamont_24]

They still worked decently just got push as hard as you can! Haha but now that I think if it when I wax unloading my other truck after I pulled the trans the brakes barely worked and that's obviously because no engine running = no vacuum

 

[Magnum PD]

Leave sucking objects away from your mouth.

 

[Cat_rebel]

Leave sucking objects away from your mouth.

I'd be leaving blowing objects away as well.....

 

[Lamont_24]

Haha thanks for advice. I'll keep that in mind guys

 

[old man dave]

You should have gotten the brake warning light if the vacuum pump is bad.

 

[Lamont_24]

I never got any lights. But the pump was the culprit

 

[SDS97_7.3]

You should have gotten the brake warning light if the vacuum pump is bad.

I've had 4 pumps go bad/blow up. Never had a light come on for a single one of them.

 

[old man dave]

You should have gotten a brake warning light, thats the way the system works. Possible your bulb is burned out or the vacuum sensing is not working.