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Help! 1st time porsche owner, 2 major issues...


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hi guys,

i need help from those in the know!

I just bought a 2003 cayenne. It has so far after 24 hours 2 big problems from what i can tell....

1) clicking noise when turning either left or right, also a slight humming sound from the front when traveling over 30mph

2) auto gearbox dosent shift to 1st gear when coming to a stop. it changes to 2nd and thats the lowes it goes!

you can select 1st form the gear controls on the wheel, but the semi-auto stick shift dosent seem to work.

what id like to know is your opinion on the probable cause of the above issues and also an estimated cost.

im in the northwest of england, so if anyone knows somewhere good who are 'cheap' but know what they are doing that would be a bonus.

cheers

vapist

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Agreed on number 2. Being Normal

1. May be a cardan shaft going bad. Mine hummed when I got over 40mph. Just a guess but let's see what others say

+1...Very common in these vehicles and has the symptoms.

#2...Definitely normal...Same happens in my Cayenne, 997 Turbo, 996 Cabrio, and GT3

DC

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hi guys,

i need help from those in the know!

I just bought a 2003 cayenne. It has so far after 24 hours 2 big problems from what i can tell....

1) clicking noise when turning either left or right, also a slight humming sound from the front when traveling over 30mph

2) auto gearbox dosent shift to 1st gear when coming to a stop. it changes to 2nd and thats the lowes it goes!

you can select 1st form the gear controls on the wheel, but the semi-auto stick shift dosent seem to work.

what id like to know is your opinion on the probable cause of the above issues and also an estimated cost.

im in the northwest of england, so if anyone knows somewhere good who are 'cheap' but know what they are doing that would be a bonus.

cheers

vapist

1 is most likely the lower control arms which need new bearings at this age the humming needs more of a definition by you, where, what frequency

2 It starts in second for fuel economy and in first when cold to heat the cats up as fast as possible to get emissions under control

Dont know anyone over there but there will be someone, look for german car specialists

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Thanks for the replys guys :)

this morning when i started the car and knocked it into D it selected 1st gear, just as mentioned here, but after that every time i came to a stop it would select 2nd. So, if this is normal thats a weight of my mind, one transmission company had suggested a new valve body costing £1200-1400gbp!

Before this cayenne turbo, i had a Touareg 2.5 TDI, i know this car DID select 1st gear after coming to a stop, is this because it was a deisel engine?

regarding the clicking or problem 1...

a local garage has said CV joints and prop shaft. as i dont really know does this sound like a posibility?

the hummimng sound is quite low, and coming from the front wheel area.

I had a rover years ago that had a similar humming noise only much louder and from what i can remember that was somthing to do with bearings.

thanks for the info/advice guys.

vapist

Edited by vapist
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hi guys,

i need help from those in the know!

I just bought a 2003 cayenne. It has so far after 24 hours 2 big problems from what i can tell....

1) clicking noise when turning either left or right, also a slight humming sound from the front when traveling over 30mph

2) auto gearbox dosent shift to 1st gear when coming to a stop. it changes to 2nd and thats the lowes it goes!

you can select 1st form the gear controls on the wheel, but the semi-auto stick shift dosent seem to work.

what id like to know is your opinion on the probable cause of the above issues and also an estimated cost.

im in the northwest of england, so if anyone knows somewhere good who are 'cheap' but know what they are doing that would be a bonus.

cheers

vapist

1 is most likely the lower control arms which need new bearings at this age the humming needs more of a definition by you, where, what frequency

2 It starts in second for fuel economy and in first when cold to heat the cats up as fast as possible to get emissions under control

Dont know anyone over there but there will be someone, look for german car specialists

when you say 'lower control arms' is this the actual name of the part? just so i can see what they are likley to cost.

thanks

Vapist

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For a 2003 not to have had the drive shaft done already would be a shock to me. The Noise and Vibration from the Carden Shaft (drive shaft) is very easy to determine and you have not described it yet.

See this thread http://forums.rennlist.com/rennforums/porsche-cayenne-forum/739277-stubborn-ball-joint.html

The lower control arms contain bushings that can be replaced with the right equipment but you can also by the control arms them selves with the bushing in so its somewhat easier a job but the part costs more

The 1st gear thing only happens once after that its second. To tell the truth if you take off in first all the time you might get whiplash lol

I would start checking a few things, how are the tires ? side wall collapse on old tires causes noise and vibration. Get the wheels check for balance on a Hunter Road Force machine to make sure they are on correctly

The shaft is much $$ so thats the last thing i would touch

post-214-0-15089200-1378826505_thumb.jpg

Edited by mudman2
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the tyres are brand new, its definatley not the tyres.

I'd describe the noise as a continuous clicking/creaking noise that is louder if you accelerate more when you turn.

if you turn really slow it can still be heard from inside the car but as i say the faster you go the louder it is.

lemme go have a read of that link.

my local mechanic is going to have a look tomorrow, hes not a porsche specialist so i hoping its a problem he can see easily and rectify for me.

Also, what would you reccomend is do service wise as this car came with no service history.

what i mean is apart from oil change, oil filter & air filter, what other things do you reccomend i do. Transmission fluid? spark plugs? brake fluid?

on a brighter note, im really happy the setting off in second gear is a none issue :)

vapist

Edited by vapist
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the clicking sound i'd guess is a CV joint. Is it a metallic clicking?

When "WE" say driveshaft, we mostly mean the shaft from the transfer case to either the front or rear diff, NOT the stub axles connected to the wheels, so just be clear which one you mean. If it were the driveshaft from the transfer case to the front diff, you would have issues all the time, not just turning.

I've never heard of control arm bushings causing clicking noises.

For the humming, wheel bearings can cause this, but usually occurs at specific speeds where it resonates in the cabin. Another common problem is the pinion bearing in the front diff starts to go. Common problem with Cayenne's and not a whole lot you can do about it. Once it starts to go, the lash on the ring gears loosens up and starts to create a humming type noise. Most will agree, you just let it ride out, since the cost to repair is so high. I've been driving on a noisy pinion gear for 3 years now, without failure. but it is noisy at highway speeds.

Now for regular maintenance, see the intervals here on the site. PERSONALLY, i changed all the fluids (diff/transmission/transfer case/engine).

  • Upvote 1
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my local mechanic testdrove the cae and said cv joints, however he was told its better to change the drive shafts rather than just cv joints so the parts have ordered and arrived along with the service parts. Its going in on monday to be done. Fingers crossed, that will put an end to the issue!

on another note, my PCM seems to have an Issue, both the radio and CD player turns the volume updand down by itself! CDs seem to skip about 4 times per song like they are scratched, but theyre not. weird

whats the issue there then?

Vapist

ps thanks for the input so far

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had it in today, new driveshafts fitted and the problem has gone. £800 all in including a full service.

more bad news tho...

asked him to check if the cookant pipes were aluminium ones...sadly not and after all the reading im terrified they mite busrt so it looks like thats then next job.

also, found the cd changer. loaded CDs and now the **** thing wont open and PCM say no cartridge detected grrr

vapist

Edited by vapist
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Check the setting on the PCM "audiopilot" - Turn it off

cheers, i've donr that so hopefully thats the end of the volume issue!

still dont know whats going on with the CD changer tho...its opening no and i can load cds in the magazine but PCM says no disc or no magazine, i cant get it to work :(

vapist

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  • 3 weeks later...
Definitely swap the coolant pipes to the updated metal ones. While you are at it, the Sept. 2010 TSB provides a 4 year 50k warranty on replacement coils with part numbers 948 602 104 07. 955 602 101 04, and all later part numbers. My '06 and '08 S's each greatly benefited from a switch to Total synthetic motor oil, which generally corrected the 0021 fault code that appears in many posts in this forum. Good luck with your new car. Enjoy.

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  • 4 months later...
  • 2 weeks later...

its a quirky vehicle to be sure... But when right it's a pretty cool. To continue on a theme. The clicking noise. i have this. BUT it seems to manaifest itself when I apply the brakes when it's wet or damp out. it's not continuous either. it's only an intermittant problem. Shortly after I bought it 4 years ago i swapped out the OEM pad for ceramic ones. Could this be the problem. I also replaced the brake wear sensors.

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