My Wife's 04 Cooper has an intermittent power steering problem. We assumed it was the pump itself as we all know they can be problematic. My wife says it does it least once on her 3 or 4 mile commute. But when I go out and try it, it doesn't play up for me!
So I gave this some thought and the only difference between my driving it and her, skillz aside , is I've been driving at night, ergo with the lights on. As I'm told the pump is electric and not belt driven has anyone ever heard of something on the wiring side of things causing intermittent pump problems?
I'll check the alternator output at the weekend with lights on and off and I've asked teh wife to drive with the lights on every time she drives it for 3 or 4 days to see if it cures it and if it comes back when she then starts driving with the lights off again.
Well its definitely new pump time! Wife just rung me and said she has got out of the car but its still making a whining noise! I told her to start it back up and went over there straight away. I left her with my car and brought the Mini back. Pump is stuck on. I removed the f8 fuse but it still stayed on! So I disconnected the battery.
I've got it up on ramps now and will look at removing the pump myself now as I have little choice in the matter now! Wish me luck...
Pump off and brackets removed and old pump cleaned up ready for exchange. Took just under an hour. Biggest problem I had was removing the feed and return pipes. When I removed the first one I had a tray underneath it ready to catch all the oil. I had a direct miss with that!!It got a bit messy after that cos I couldn't be arsed to clean it up before I got back under.
PS pump Fan is only fitted to the R53 Cooper S models in UK. The R50 One & Cooper for export hotter climates have the fan and all R53 Cooper S models have it because of the extra underbonnet heat created by the supercharger.
As I had the day off today i thought I may as well take the PSP over to BBA REman as they are only a 30 mile ride away. They are easy to find at the back Rochester Airport. I asked if they could refurb my PSP. The guy said on ebay they charge £160 to refurb your own pump or £200 to exchange but added as I was there, did I want an exchange one there and then for the £160! I suppose it saves them boxing one up and couriering it etc but it certainly worked for me.
I stopped off on the way home to try and source some CHF11s but I know I couldn't find Pentosin locally I didnt want to not do the job so bought some Millers CHF oil instead. It didnt say if it was mineral or synthetic though although the guy in the shop said it was synthetic. To remove any doubt I rang Millers tech line to check it was synthetic and suitable. The guy said Pentosin developed CHF and gave it its type number of 11s and technically speaking that is their brand name for it and no one else should sell it as 11S. He did confirm the specs were the same so I went ahead and used their version (£10.99)
Then it was on to back home to get it fitted. Again dead easy to bolt back into place and the only thing I suffered a bit with was getting the feed pipe back on but of course managed it eventually.
I'd done the job with he car on ramps and when I rolled it down off the ramps I then found I couldn't get a jack under it to get the wheels off the floor. How low are these cars! Rolled it up on two bricks and then get the jack under it and lifted the front wheels off the ground. I then rotated these lock to lock without the engine running to purge the pump of any air. Then i started it and let it run a bit and after checking the level took it for a ride. Steering is quieter and works fine. So for a £170.99 we now have a new PSP with a life time guarantee!
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