Hydroboost causes engine to stall...HELP!!!!

[BSER]

The brakes are bled and the power steering works fine. The problem is that as soon as I press the brakes the engine stalls, I even increased the idle just for grins and it still died.

I have checked all the lines and they are all routed properly, with this kit you really can't plumb it wrong since each fitting is different. I have the return line Teed into the power steering return line, an option is to drill and tap a hole in the reservior and plumb the return line direct but I don't see how this would make a difference.

It seems there is a large load being placed on the power steering pump. Like there is to much preesure building up and engine is working harder and harder as pressure builds until the engine stalls.

I have been building this Elcky for over a year and this is the last item before I get the alignment done and get to finally drive it. But no brakes no drive any help would be appreciated.

[willieboy240]

you might get more help over on the turbo regal site. they have hydroboost in all their buicks.

[derekf]

What pump do you have? I seem to remember someone saying something about line pressure being a concern; if your pump isn't up to snuff it may cause something like this.

Hopefully someone more clueful will step up and give a more concrete answer.

[BSER]

I have the hydratech hydroboost. I managed to get in touch with Paul at hydrotech and he walked me through it. Turns out there really wasn't a problem with the system. The pressure relief was sticking on the power steeering unit, took it apart cleaned and reinstalled. This was the main culprit.

The other was my fault; the hydroboost develops so much pressure that it can eat up a lot of power if you hold the brake pedal to the floor; kinda like turning the wheel all the way to the lock with your power steering. So if you stand on the brake pedal and don't have the pressure releaved it will build up until something ruptures or the engine dies. Fortunately for me the engine died.

I just had to back off the brake pedal some and it works fine, still drops the rpm about 200 but that's normal. The big cam I have is the biggest isssue now, not as much torque down around 1000 rpm. I was used to manual drum brakes and now all I need is to do a light heel and toe type of driving.