I have a 2000 3500 Ram Cummins, 6 speed manual. Everything was working fine all of a sudden no power steering or power brakes. Both happened at once but I can not see that they would be related. Checked belt it is OK.
I will be getting under it here shortly to investigate any help at what to look for would help.

Thank you,

David

 

check PS fluid, PS pump also controls the breaks, no belt, its gear drivin, if it has fluid, its a mechanical failure

 

Sounds vacuum related. Isnt there some sort of vaccum pump since a diesel dont create vacuum on its own?

 

ps pump controls breaks? how?

 

Don't you have hydraboost? (as opposed to vacuum assist brakes? I.E., no big round feller on the firewall that the master cylinder attaches too...)

 

All cummins trucks, and 94-04 mustangs because they're stupid run hydroboost. The cummins use it because they creat no vacuum on there own

 

Ding Ding Ding P1nkSt@ff gets the small teddy bear as a round one prize.


They use a hydroboost setup because as he pointed out a DIESEL doesn't make vacuum. Some get around this by running a vacuum pump while others use a hydroboost system. The brakes get their power boost from the power steering pump. So since both failed at the same time you need to be looking at your pump. If there is fluid in the PS reservoir then you most likely need a new pump.


Not sure why you think it is a stupid idea that Ford used it on the Mustang. I swapped out my stock vacuum boost on my Jeep and went hydroboost because I get better pedal and more stopping power with the hydroboost. I can lock up my 38" tires where before I couldn't lock up the 35" tires with the vacuum boost. So to me it works and works better.

 

wow, didnt know this was such an unheard of system...



if you havent caught it yet, its called hydro boost, it used hydraulic pressure to operate the power breaks, the pressure is supplied by the PS pump

not all cummins trucks run a hydro boost, only 97 and newer do


correct! and im with you on that, im comfortable with my vacuum breaks, but the hydro boost gives a MUCH better pedal feel over the squishy vacuum breaks, and when you need it, there is plenty more power there, my 98 with vacuum had no problem stopping 37's but i get in the dually, with 37's and hydro boost and try to smash my face on the windshield the first stop or two of the trip lol

edit: just to be clear... yes i said 97 and newer have hydro boost, and my 98 has vacuum.... but my 98 was a v-10 and has been converted to a cummins, and is running the vacuum pump

 

I guess the priors run off a vacuum pump, thought they all were hydro.

And I don't like that system in a mustang because everything around a modular engine including itself is junk and prone to falure so being more reliant on moving parts in such a situation got me pretty heated for awhile, something to the tune of 3 pumps in one month. It would have gone to full manual if it wasn't so hard to stop and didn't feel like I was gonna break the steering shaft trying to turn it

 

Pink,
When you go to full manual you have to change the brake master cylinder and steering box. You can't just disconnect the belt and expect things that are suppose to be boosted to work. So you didn't like your stang but that doesn't mean it isn't a good system.