dominick550

So I proactively replaced my pump with a rebuilt unit from 944online to fix a few leaks, replaced the supply hose as well. Bled the system and all went fine, drove the car a few miles and all seemed normal, then things went not normal. At a stop trying to turn it started making noise and power steering was nil, it even kicks back a little while trying to turn the wheel. Now it's just noise, jittery, and almost impossible to turn when not moving.

Air in the system? bad pump?

jhowell371

Sounds like more air trapped in the system. YMMV

951and944S

The line from reservoir to pump, are you sure it's not flattened between the radiator hose and the frame rail...?

T

mazdaverx7

. I would let the car sit for about 20 minutes with the engine off and then check the power steering fluid level. Ensure its between the lower and upper marks on the dipstick. start the engine and open the reservoir cap and check to be sure the power steering fluid is not foamy. It often takes some time to thoroughly bleed the system after a new pump is installed. Also, its best to replace the reservoir when doing the pump as there is a filter element in the reservoir that breaks down over time.

dominick550

Thanks for suggestions, I'll check things out today. I do know the reservoir supply line isn't pinched. I also have a new reservoir but the old one looked fine, rethinking that now..

Ky944TurboNewbie

I know it is a stupid question, but did you use ATF or power steering fluid?

mazdaverx7

Don't rethink your decision to install a new reservoir. That is an absolute must when rebuilding or replacing the pump. The filter inside breaks down over time and can contaminate the pump and rack. You did the right thing. These systems do sometimes take some time to bleed properly, so letting the car sit after running it is good to do. I rebuilt a pump and when bleeding the system, the fluid turned to foam and overflowed multiple times. It was frustrating to say the least. But I got it taken care of and all is well. Just be patient with it.

dominick550

Ok, good to hear, swapping out the reservoir today and will report back. Oh, and yes I'm using ATF.

dominick550

Update.. So I still have no PS. Checked the supply line, all good. Replaced the reservoir and fluid again, tried to bleed and nothing happens. No bubbles, just occasional groans from the pump or rack, but zero assist.

BTW, all was fine before I replaced the pump, just some small leaks. Out of ideas so I'm thinking about putting the old pump back in..

mazdaverx7

Perhaps the new pump is no good. I would try installing the original pump and see what happens. If the original pump was not leaking, I would not hesitate to clean it it up and install it.

dominick550

Put the old pump back in and all is well, other than the leaks. Think I'm going to order a set of seals for my pump and send this one back. So strange that it worked for a few miles... oh well

mazdaverx7

I rebuilt the pump on my 86 and it went well. Took a few hours from start to finish but I was happy with the results and I knew the job was done to my level of satisfaction. I think you will feel good about the rebuild and know the job is done right. If I remember correctly, I got my rebuild kit from Rennbay.

dlknight

Power steering pump repair kit is available direct from Porsche - part number is 92834792101. Worth checking with a dealer first as when I purchased my kit it was much cheaper than all these other places that were just simply selling the same kit with a price mark-up (cost me £10 in the UK).