Need some advice on power break booster pump noise

[Car Nut]

Originally Posted by tin-man

Hi Rick, The only thing I have in this respect is the picture, attached and a bill stating 12 volt vacuum pump, I have asked the installer what type of system I have and I'm still waiting for a reply. Just so you know I am in China and the Cobra is in Fullerton California getting some corrections made to it after I drove 78 miles and it stopped working. I have a post on that topic. When I hear back I will respond. Cheers, John, AKA, tin-man

Apparently you have a vacuum pump which supplies sufficent vacuum to a vacuum operated power brake booster.

They make noise, that's normal.

[tin-man]

Originally Posted by Car Nut

Apparently you have a vacuum pump which supplies sufficent vacuum to a vacuum operated power brake booster.

They make noise, that's normal.

Seems you called it correctly, I have been informed what I have is a vacuum pump to give the brake booster vacuum. Being the case then the noise I should get used to, right?

Cheers, John AKA, tin-man

[RICK LAKE]

Tin-man John 2 choices, if the noise is bothering you, Move the pump to a different location if it is on the foot box. The vacuum assist doesn't care where it is mounted, just have to run the wiring and longer vacuum hose to pump. GM and Ford used them years ago on some car to assist the motor with a vacuum booster. See if there is space to mount this on the frame in front of the motor down low. These motors like a good air supply to help keep cool with the little diapham and motor running. If there are in dead air they make louder noise. If you can get a air flow to the area, you can mount sound deadener also to direct the sound away from you.
Does your motor have a big camshaft? What I mean is loping and rough idle with only 10-14 Hg of vacuum? If your motor has a higher vacuum and you are running a double vacuum booster, you should need the vacuum pump to run the system. Only a vacuum gauge inline will tell. I know it's not pretty but the diesel assist pumps work great last for 10-15 years and you never hear a noise. Hydro is the other way. How's China??? Rick Lake

[tin-man]

Originally Posted by RICK LAKE

Tin-man John 2 choices, if the noise is bothering you, Move the pump to a different location if it is on the foot box. The vacuum assist doesn't care where it is mounted, just have to run the wiring and longer vacuum hose to pump. GM and Ford used them years ago on some car to assist the motor with a vacuum booster. See if there is space to mount this on the frame in front of the motor down low. These motors like a good air supply to help keep cool with the little diapham and motor running. If there are in dead air they make louder noise. If you can get a air flow to the area, you can mount sound deadener also to direct the sound away from you.
Does your motor have a big camshaft? What I mean is loping and rough idle with only 10-14 Hg of vacuum? If your motor has a higher vacuum and you are running a double vacuum booster, you should need the vacuum pump to run the system. Only a vacuum gauge inline will tell. I know it's not pretty but the diesel assist pumps work great last for 10-15 years and you never hear a noise. Hydro is the other way. How's China??? Rick Lake

Rick, good points, I'll discuss these options with the installer to see if this can be done on my car. The issue is when I turn the ignition key, the booster pump kicks in, makes a racket and then stops. In traffic when I apply the brakes the sound is audible and troublesome for me. Thus my question "is this normal", apparently so.

China is awesome and is the place to be if you want to establish a footprint for your business. Free land, tax incentives up the gazoo, inexpensive labor with a great work ethic and in most parts good infrastructure development for product distribution. The tourists spots are also good too, come on over and we'll share a brew. John, AKA, tin-man

[STL Mark]

Originally Posted by tin-man

The issue is when I turn the ignition key, the booster pump kicks in, makes a racket and then stops. In traffic when I apply the brakes the sound is audible and troublesome for me. Thus my question "is this normal", apparently so.

I have this set-up on my car. It is normal to answer your question. Nothing is wrong. I don't even notice it anymore.

[tin-man]

Originally Posted by STL Mark

I have this set-up on my car. It is normal to answer your question. Nothing is wrong. I don't even notice it anymore.

STLMark, thanks for shareing, it just seemed noisy to me and after all the crap I've been thru with the car I am supersensitive and want to make sure everything is ok before I take it home. Cheers, John, AKA, tin-man

[Car Nut]

Originally Posted by tin-man

Seems you called it correctly, I have been informed what I have is a vacuum pump to give the brake booster vacuum. Being the case then the noise I should get used to, right?

Cheers, John AKA, tin-man

You can't hear over the sound of the engine anyway, so why be concerned?

Oh, we don't know that yet do we? Well when it is, you shouldn't hear it over the sound of the engine.

[tin-man]

Originally Posted by Car Nut

You can't hear over the sound of the engine anyway, so why be concerned?

Oh, we don't know that yet do we? Well when it is, you shouldn't hear it over the sound of the engine.

Now that's a shot right? The fix is getting done now by reflashing the ecm unit at Roush, adding a relay somewhere to the wiring harness and then do a re-install, should work according to all the boffins at Roush. I am hoping all will be done this month so Lance Stander from Hillbank will put some additional miles on the car before I take possession again. Currently I plan on being in California the middle of November and if all is well, will be in Phoenix for Thanksgiving and then return to China by end of November.

Cheers, John, AKA, tin-man

[Car Nut]

Originally Posted by tin-man

Now that's a shot right? The fix is getting done now by reflashing the ecm unit at Roush, adding a relay somewhere to the wiring harness and then do a re-install, should work according to all the boffins at Roush. I am hoping all will be done this month so Lance Stander from Hillbank will put some additional miles on the car before I take possession again. Currently I plan on being in California the middle of November and if all is well, will be in Phoenix for Thanksgiving and then return to China by end of November.

Cheers, John, AKA, tin-man

Shot? Whatever do you mean? It was just an observation.

In all seriousness, I truly hope they get the goblins out of it before then. Is Lance an independent observer of sorts giving you accurate feedback of what is going on?

[tin-man]

Originally Posted by Car Nut

Shot? Whatever do you mean? It was just an observation.

In all seriousness, I truly hope they get the goblins out of it before then. Is Lance an independent observer of sorts giving you accurate feedback of what is going on?

Hi, Car Nut, Lance Stander is the owner of Hillbank Motors and is the person I purchased the roller from, he has agreed to store my Cobra in his showroom until I can get back to California to pick it up when all the fixes are in place. The transmission issues have been resolved and all that is required now is to get the ecm reflashed and the relay installed and the high idle will be minimized and the grabbing effect eliminated. Thus the car should be as it was supposed to be when I took delivery from the installer. Lance will drive the car and then let me know if everything is ok. I trust him completely.

See you during Thanksgiving.

Cheers, John, AKA, tin-man