Doohan

I'm fighting with that piece too, it's correct that's a part of the air oil separator, I’m changing the two O-rings cause it leaks oil!

At the Porsche Official Dealer they could'nt find the problem using the Porsche diagnostic tool...

Is there any simple way to fault test the microswitches in the car directly from the alarm system or using a jump wire?

I have a a single-beep of the alarm horn on locking since over a year, the Porsche dealer could not solve the problem after billing me 600,00 € for a new interior monitoring sensor, Oddment compartment microswitch, Front lid microswitch, a new Radio contact and the PST check.

As a result they told me that I should leave them the car at least two or three weeks because they have to take out the seats and other parts to solve the problem... I paid and drove back the car home.

My Air Oil Separator is blowing out from that vent tube causing the same leaks I see in that pictures, is it a bad sign?

@20 yo Carrera 964 MY90

@30 yo Carrera 4 996 MY00

... you already answered to your question!

They gave me this:

999 170 207 91

BERU ULTRA

14FGR-6KQU R6

for 20$ each

and, again... what are the best spark plugs to use on a 996 C4 '99?

Large 46 mm

height 11mm

Try @ Home Depot

Any idea on how to make a 996 rear lights look like the 997? I was thinking, maybe using the rear fog lamps, as if they where stop lights, so fitting inside a two filament bulb could make the effect closer to a 997...

LINK to someone who did it

here is a link with pictures of a conversion - (you might have to sign in to see the pictures)

godd luck!

Basically it refers to this site:

http://www.6speedonline.com/forums/996/163...s-thoughts.html

But they talk about a led conversion for 600$...

Any idea on how to make a 996 rear lights look like the 997? I was thinking, maybe using the rear fog lamps, as if they where stop lights, so fitting inside a two filament bulb could make the effect closer to a 997...

Maybe you have some problems on the ignition switch, I had the same issue with the AC...

I'm changing out the throttle body on my 1999 C-4 with e-gas next week and was wondering what to expect. I looked in the DIY forum and here but did not see a posting that describes it. Can I re-use the bolts? Does the ECU (DME) need to re-learn the new throttle body? Any special tools needed? I'm changing it out because its making lots of funny noises and does not behave well when cold (surging hesitating) codes are P0102, P1503 and P1506, once it warms up all is fine. Already replaced MAF with no change. Any information is much appreciated.

Thanks, Jerry

I think that you already know all the answers that you need :) for sure I can tell you that you can keep your bolts!

I believe differential fluid change is part of the 90K mile service. Unlikely changing the fluid will make any noticeable difference to the driver assuming normal wear of the differential.

The 911 Carrera 4 is a four-wheel-drive system with a viscous multiple-plate clutch, the front wheels consistently convey a minimum of 5 per cent and, if required, a maximum of 40 per cent of the engine's drive power to the road. The viscous multiple-plate clutch is housed in the front axle drive unit, conveying drive power to the front axle and compensating for any difference in engine speed between the two axles. Like a multiple-plate lock, the clutch is made up of inner plates fastened to the hub and outer plates connected to the housing. Silicon fluid comes between the plates in a totally sealed compartment. As soon as there is a difference in speed, shear forces between the silicon fluid and the plates transmit torque and drive power to the front axle as required.

B)

Nice! Thanks for the perfect explanation!

@Xeattle

I had to change it because of the oil leak...

Exactly the same!

How did you find a plug that fit? Trial & error?

Just tried with a couple of tanks...

Any picture of that final drive?

Change both the horns (low & high), and... 15 minutes is only valid for Loren! ;)

I also have a 99 Porsche 996 but C4 and I was changing my front brake pads today and found some gease on the brake line. So looked into it further found my front passenger side outer CV boot is crack wide open and there were barely any gease in joint at all. I look into the company you mentioned but did not see any part for that was for the porsche. Did you order part that was for other cars? I think I did feel my car shakes a little a month or two ago but I check the wheel and no gease was found so I just thought I was being too sensitive but now I think the shake was indeed from the crack CV boot. Any pointer would help on finding new replacment boot or even changing out the whole axle. Thanks in advance.

I had the same problem last week... I just had the part from my porsche dealer, the part number is 996 349 291 00 and it's called "dust bellows"

Exactly the same!

Ok, lift up the car, dry out the diff oil, remove the lower wheel arm and try to get enough room space to pul out the joint

Take out also the 6 screws and nuts fixing the last part of the joint

Now you have enough space to remove all the screws and the dif cover

Clean everything, put the new Oil seal and remount the cover.

Now fill with transmission oil to the level (until oil start to come out from the filling hole) and remount everything in reverse order. you are done!

Want to try a cold air intake like the schnell type? Do you already know that a modified air intake have as result only a great sound and almost nothing in hp gain? So... let's do it with less than a $ spent...

Here we have the factory box filter

Loose the wraps

Take a 50 cent plastic tank

put the middle plastic cap inside the secondary air inlet of the OEM air intake

Check if everything is all right and remount the intake with the original wraps

Let the MAF sensor read the new air volume and you are done!

I did this with the middle cap of a 5$ plastic tank... the upper lip is larger so it is retained by the lateral OEM Black rubber hose.

If you just changed your diff fluid you should not have to fight with joints or boots... 3 months ago I had to replace the right oil seal of the diff so I had to remove the left joint to change it, the boot instead is on the wheel side and it's the number 13 in the picture..

After lots of research on the forum and even a PM to Loren I was looking if some one can help me with a step by step instruction on how to replace a front joint boot on a 996 C4, the last time I worked on it (to change the front dif oil seal) it was very very hard but I'm sure there is a simpler way to do all this stuff... unfortunately I don't have the Porsche technical manual but only the PET, so if anyone have a DIY documentation it would be great to share it there...

Thank you in advance!