intermittent PAS failure
intermittent PAS failure
Author
Discussion

OleVix

Original Poster:

1,438 posts

177 months

Monday 21st September 2015
quotequote all
After rebuilding my pas system I had PAS fluid from my local supplier in it. After a day or two the PAS started to make noises when in use, same noise as when you turn far right or left. I then emtied the resevoir and put in some ATF which made it better... did that 2 times so its 50/50 atf and yellow stuff...
Nowadays the PAS loses power some times, like, im driving slowly and suddenly the steering becomes heavy.

Do I need to rebuild the whole thing or is it enough to flush the system out and put in the red ATF stuff?

ClassiChimi

12,424 posts

178 months

Monday 21st September 2015
quotequote all
Has the level dropped a tad in the reservoir Ole,,,I'd check it's not started leaking at the gator ends,,
Maybe the pumps giving in,,,
Hopefully it just needs the right fluid.
When I removed my rack I didn't actually empty the rack itself but did replace the fluid,, you've obviously turned it from lock to lock a bunch of times to remove any air.
Years ago as a kid I sold some brake fluid to some poor bloke,,,I'd shook the bottle up,,,
He couldn't get rid of the air bubbles,,,we gave him a fresh bottle and all was well,,,I still don't know if it was just me shaking up the bottle that caused the issue ????

I'd drain it all out and try again!
Fingers crossed for you.

QBee

22,466 posts

173 months

Monday 21st September 2015
quotequote all
I think it is supposed to run on ATF. So first call after confirming it isn't leaking would be to drain out the mixture and put fresh ATF in.

phazed

22,464 posts

233 months

Monday 21st September 2015
quotequote all
As above.

Flush through with ATF, and leave the return pipe that goes back to the reservoir off and put it in a bottle or something else to collect the fluid.

Run the engine and keep topping up until it is thoroughly flushed through. Reconnect fill up turn the steering from left to right many times, top up and test.

I have found with my current chim that it takes ages for all the air to bleed from the system, in fact many miles after doing the above.

Good luck.

OleVix

Original Poster:

1,438 posts

177 months

Monday 21st September 2015
quotequote all
thanks guys!

Pupp

12,948 posts

301 months

Monday 21st September 2015
quotequote all
You sure the top joint in the wheel arch is free? and not partially seized?

nawarne

3,178 posts

289 months

Tuesday 22nd September 2015
quotequote all
Pupp said:
You sure the top joint in the wheel arch is free? and not partially seized?
That's a good call!
Nick

OleVix

Original Poster:

1,438 posts

177 months

Tuesday 22nd September 2015
quotequote all
nawarne said:
That's a good call!
Nick
all joints are new

vaurien

339 posts

178 months

Sunday 27th September 2015
quotequote all
Hello Ole,

you are sure that nowhere is leaking the pas - rack inside ?

Here are one new design / construction from us speciall for the power - seal on the rack / shaft.
It´s speciall maded for tvr pas steerings ......








Cheerio to Oslo

Gregor

Edited by vaurien on Sunday 27th September 10:09

OleVix

Original Poster:

1,438 posts

177 months

Sunday 27th September 2015
quotequote all
vaurien said:
Hello Ole,

you are sure that nowhere is leaking the pas - rack inside ?

Here are one new design / construction from us speciall for the power - seal on the rack / shaft.
It´s speciall maded for tvr pas steerings ......






Cheerio to Oslo

Gregor
I changed those seals in january! Maybe I did a duff job