My 957 Cayenne GTS Progress thread

If you don't want your roof bars I'd gladly buy them off you! I have a set of the Porsche roof rails for my car but I can really only fit 3 bike carriers on them whereas I need to get 4 on the car so am looking to swap to the roof rails with the Thule clamp on bars instead as they are wider.

I'll keep you posted!

Was looking to see if something slides into the rail once the bars are removed to stop dirt collecting there, I have some black bars that runs down the middle of the roof too which I assume are stuck on..

Like this;

I realised the MOT runs out at the end of the month, as I've got a baby due at the same time, I thought it best to get the MOT out of the way now and get some other eyes to look it over.



Everything was fine! I did mention that there is a knock from the front end but no matter what we pulled on, levered with a huge pry bar and push against, we just couldn't detect what was at fault. Either way, I plan to change the wishbones / bushes regardless, they have covered 95k so past their best I'm sure.



Outside of the MOT, I was able to poke around with it up in the air, quite nice to be able to stand up under it rather than be on your back! All looks good now that it has been cleaned.



The only thing I spotted was a dubious bandage over a section of an exhaust flexi pipe, I need to investigate why and what is involved here. I assume there is a split/hole here. At first sight, it looks like the primary cat pipe will need to be removed so that someone can weld on a new flexi but getting that pipe off looks to be a nightmare as the nuts have rusted in typical porsche fashion. Hopefully it can be done in situ, lets see. For the time being, I plan to heat wrap the flexi's, just to give some extra support in case they are getting weak.

So, the PDCC!!! I am itching to resolve the issue and I really need some better diagnosis but I'm impatient and had a new PDCC fluid tank to fit, so while I've got the bottle off, why not pull the rear valve block apart and take a look close at the components on it.

Fluid was pretty dark considering it was changed in May last year when a pressure line was replaced. The invoice for this job shows that the system was calibrated too.



New bottle as these have filters and should be done every 60k.

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So, off came the 2 pressure sensors and 2 valves. Not much to it in essence, I was slightly scared when removing these as if something snapped, I would be in trouble, thankfully, patience, WD and winding the parts out by loosening and re-tightening ensured everything came out smoothly.

Nothing scary was discovered, I cleaned everything up and refitted. Now I know it is all clean and I have now refilled with fresh CHF11s, it's a step in the right direction. I will get it on a computer again and go from there. All I can do on it now is replace the pressure sensors, fine, that will be an easy and quick swap so that I've had them off but if it's one of the valves, I'm not sure what I can do as they are not something I have seen before and certainly not going to be easy to trace as no part numbers could be seen. I really hope they haven't died.



I was tempted to put power to them while off the car but I didn't know how much so thought it best to find out. As it's all canbus, I was unsure.





So, with it all cleaned, back together and new fluid, I had hoped that the warning wouldn't return, unfortunately, it did. I think the system will need a computer bleed so I'll get this done after a diagnostic check from a proper system. Demort, I'm coming!!

On a positive, the new fluid has resulted in a quieter pump, doesn't hum as much as it did.

Small job, I wanted to restore the original mats, they were an expensive option and tie in nicely with the red belts, the mats themselves are in great shape but some of the red colouring on the leather binding was coming away, so I bought some leather dye and touched in the wear patches.









More beading





So next, wrap exhaust flexi's, find out if the dodgy one can be replaced in situ if needed, more diagnosis on the PDCC and I reallyyyyyyyyy want to book it in to have the rust removed but I want to sort the PDCC first!

Oh, tried out a Goonies DVD in the rear.

Oh blimey .. you are a bit further on than i thought !

Pretty corroded but its on the seat and not the seal so that's ok .

Start with the pressure sensors .. that's my hunch anyways .. solenoids .. well like any on the sports cars .. they block .. clean in petrol / paraffin or a solvent .

Fluid looks a bit black to be honest .. it should be pretty much green .

the pump is quieter .. hmm .. it shouldn't be in theory .. oil is oil .. perhaps some metal contaminants .. not sure there .

Either way .. replace as much as you can but to be honest most of it is in the reservoir so a replacement there will change most of it .

Thanks Iain!

Ordered 2 sensors, lets see what happens. Also ordered an iCarsoft diagnostic thingy, hopefully I can then read all the codes myself.

If the sensors don't resolve the issue then it's got to be an issue with the valves but lets see!!

New fluid is much greener and has remained so, I will flush again when I fit the new sensors just to get some less mixed fluid in.

Voltage to the valves is something I want to find out and if they are earth through the body. It has a 2 pin connector, is 1 a live and 1 position? or 1 live 1 earth?

diagram is on the pdcc post .

its a return system so voltage / earth supplied from the control unit from what i've seen on the diagram .

Odds and sods going on and more recently, having my patience tested!

Looking good from this angle!



new EL strip for the passenger side sill arrived, this was an easy enough to do job

Before


After


While poking around, I discovered the car has the expensive bearing support upgrade.



Gearknob handle was scratched, was going to paint this but then decided to use some spare alcantara to trim it, this was a bit trickier than I thought but after an hour, made a nice improvement.







Brake pads were very low and I had the wheels off to change the wishbones (or so i thought) so changed the pads





New pads and fitting kit


Now, the job I wanted to do was change the front lower wishbones but I just couldn't get one of the bolts out!! It undid and was turn, along with the bush but as it had seized itself within the bush sleeve, I couldn't bash it out. Not being able to get a good angle on it didn't help, I tried heat and all sorts. I'm going to attack it again this week but just cut the bloosy thing off once my replacement bolts arrive.





I have since ordered new alignment bolts and upper wishbones..

Can't wait! :dont know: :x

The garage who did my lower wishbone had exactly the same problem as you. Front nearside bolt came off no problem but the other side a complete pig apparently and poor access. Think they said the access hindered them cutting the bolt off. They free'd it in the end but it took an extra couple of hours, hence more of my money! Hopefully your second attempt proves more fruitful.

What a nightmare, seems common after doing some google searching on how people removed it.

I'm awaiting new nuts/bolts to arrive at Porsche, once I have them, I will have a go at cutting the thing off!

New PDCC pressure sensors arrived, easily fitted those in 5 mins.





Not sure if they resolved anything as I'm getting the Chassis System Warning when I turn a corner, once my wishbones are sorted I'll get that code checked as that may not be PDCC related.

Always nice to start with something simple...






Got the bloody wishbones off.





The ball joints were good, totally solid still, I was really surprised by that but the rear bushings were showing splits and felt soft so this was a worthwhile job.





Really heavy, I regret not going for the Q7 aluminium arms, not that I'm going for weight saving here but I'm sure it would have added some benefit.



Ran out of time to do the uppers but I'm hoping to get those done this week along with top mounts which I only just discovered are available to buy for the air shocks.



All of the entry guards are scratches, so I set about cleaning those up as a little job on free moments of the bank holiday.





I didn't go for perfection as I didn't have the right bits with me but I did the best I could.




Front upper arms, top mounts and gearbox mount next! Will finish up with an alignment too, then I think that will be it for a little while as the baby is due anytime! :bye: :dont know:

Good work! :thumbs:

Cheers Pops!

Need to PM you about what you do

Just a quick lunch time job

New AOS diaphragm turned up, no reason to change this other than why not for the sake of £25. My 997 benefited from a new AOS so I figured, why not on this.

10 minute job, cap takes some careful levering, popped off to show oil build up from vapour. Cleaned this out and put new part in.

Not expecting 100 bhp but at least it's one extra thing to future proof it. Signs of a bad one is smoke on start up and hissing noise, I had neither but many people on the US forums get this around my mileage/age.

Original diaphragm was brittle as anything, in fact, I think it was stuck in position so probably wasn't doing it's job.

Overnight parts from Russia

Typing this with lots of aches and pains today, spent a solid day from 9am up until 10pm fitting the upper wishbones, new top mounts, doing some rust prevention finished off with a wash.

I lost an hour just doing this! I just couldn't get one of the wiper arms off and my bearing pulley was too big! Eventually got it free after lots of WD40 and pulling.

Removed the scuttle just to gain access to one of the turret mount bolts, also cleaned out leaves and crap.



Arch liner removed



Shock out, I never thought I would be pulling a shock out of this car, the air system has always scared me as it's an unknown but now I've done this, it's fine!



Many people don't seem to know that there is a rubber mount in here, after seeing a guy on Rennlist showing his one torn in half, it was a no brainer to change while I had the shock out. I had a knock coming from somewhere so I would have hated to only do the wishbones and find the knocking is still present.

Upon inspection, the mount was fine, I couldn't tell it apart from the new one, the upper wishbone looked good too, balljoint was a little loose but I wouldn't have said it was at the end of its life. I was slightly worried at this point as I didn't find the destroyed bushing/joint I was hoping to see.. Drivers side anyway...



When I got to the passenger side, I found the fault, the balljoint was floppy and knocking!! What a sense of relief that was :worship: :bandit: :thumb:



Old and new



The passenger top mount was showing some signs of age too with a healthy crack, I wouldn't have said this was bad, probably just cosmetic at the moment but I like to future proof while I'm working on an area.





Gave a quick clean up



New upper wishbone, these weigh nothing, I really really wish I did the ally lower arms!



Geearbox mount was next!

Original was squished



I removed the entire arm, 8 bolts and dead easy.



Smashed the original bushing out, this was very easy..

The hard bit was getting the new one in! The bushing was larger than the hole it had to go in, there was NO WAY it was going in. So after a good hour of sanding the edges of the bush and the bracket down, eventually, the new bushing was fitted after much lube, tapping and hammering!



I can tell it tested my patience as I didn't take any more pictures :roll:

Time to relax from working on this at every free moment now while I enjoy my son coming in to the world any day now. The next jobs will be alignment, wheel refurb and paintwork so nothing for me to get so involved with :thumb:

As for how the car is now, the knocking is no more and the drive is smoother, I was getting a light vibration at 33mph, commonly reported online and the driveshaft being the cause, as the bearing support and doughnut are new on my car, it couldn't be those, hence spotting the saggy mount. The vibration has gone. So I am very happy with my efforts

Got my alignment sorted, I thought I would give Kwik Fit a go, not somewhere I have ever taken a car before but since they had the highly regarded Hunter machines and they were local, I thought what was the worst that could happen..

Got there first thing Saturday morning and after a short wait, it was up and being adjusted, everything needed adjusting but it didn't take the guy long.

Once he said the adjustments were made, I compared them to the Porsche specs and everything was spot on!



So £85 for 4 wheel alignment, nice guys and local, all good!






:bye:

The Hunter system is pretty damn good .. we had it at OPC .. it basically holds your hand .. it tells you what to adjust .. foolproof really so i have no problem recommending Halfords to do a job like this .

Cheap as chips and the same job as an OPC could do .