Rikky

I would check the coils for cracks and replace them all together with the fresh sparkplugs. They are cheap.

45 USD is cheap no? On Ebay you can find maybe for 20 USD.

For all 997 as of MY 2005 tightening torque is 96 ftlb or 130 Nm

Always apply a thin coat of Optimoly TA (aluminium paste) on the thread of the wheel bolts, on the shank and between the bolt head bearing surface and spherical cap ring (under the head)

Do NOT grease the spherical cap bearing surface facing the wheel.

As per instrucyion manual - Never use an impact bolter.

Sounds very challenging as the doors are designed not to open from outside. Hope you don't have to smash the window to get inside. Happened to me on my Grand Cherokee long time ago.

Good news!

Bjorn,

P1090 is a MAF sensor fault detected. Not necessarily the MAF itself as a dirty throttle body can result in the same trouble code.

Check your MAF connection first.

Check your throttle body, mabe it is very dirty (happens more when you use a sports airfilter).

My guess is that your MAF and throttlebody is creating the problem as your AOS is faulty. If you have an excessive vacuum, you told us it was difficult to remove the oil filler cap - than lots of crankcase vapours, too much, end up in your intake system and poluting your MAF sensor and throtlle body. I have seen throttle bodies full of oil and carbon too..

Just take the air filter box out and look at your throttle body if it is very dirty.

Depending if your fender is bend or any other structural damage.

A second hand fender eBay is cheap and a front hood you might find cheap as well.

I would get a detailed analysis from a person who does Porsches, but 1500 USD is quickly gone.

If only a front bumper to be repaired and a front hood to be replaced you might get away under 3000 USD depending how much they charge to paint.

Fingers crossed.

I have 2 mufflers from my 2007 4S for a small price if you like. I replaced them last year with the original sports exhaust.

Good condition.

However I am in South Korea, had to pay about 150 USD shipping cost.

If interested drop me a PM

Just stick your head under, you will be able to see this; don't drop the engine.

_{Seems somebody forgot the hand-over check?}

Hi Bjorn,

Did you measure the vacuum on your crankcase? If it is really hard to remove, no need to measure as that is exessive vacuum already - AOS replacing is not that expensive if done yourself. I would solve that first and take it from there.

Good luck.

Just curious; could you find out and fix your problem?

Good point, the very cheap ones might have been laying on the shelf for 2 years already... You will only find out when installed and battery life read out.

I was thinking a while about buying them myself and let the tire guy install them but I ended up with the dealer as the difference in price was not that high.

Terve Bjorn,

If there is a lot of suction on the oil filler cap; sounds like an AOS problem. If your AOS is not working properly you will note that it is difficult to remove the oil filler cap - and usually there is a lot of white exhaust smoke too, not always.

AOS is not that expensive to replace if you do it yourself.

A picture says more than words!

Start from there in the troubleshooting - check if the rods are moving freely.

If they move freely than there are only 3 options why your exhaust flaps do not work, either the solenoid valve does not work, there is no vacuum to actuate the actuator, or the actuator itself is broken.

As already mentioned, the default mode is loud; either pull of the vacuum hose or the solenoid valve connector - this should open the flaps.

If you exhaust flaps stay in closed (silent) position with the solenoid connector removed or the vacuum hose of, then the problem is either in your exhaust - flap(s) seized or actuator(s) seized in closed position.

These actuators are simple things, the rod is out when no vacuum present and when vacuum is applied a membrane will pull the rod in - and close the flap.

Let us know what you find, easy to check.

I glued the rubber grommets so they stay in place.

If the vacuum hoses are off the exhaust flaps are open. You need vacuum to close the exhaust flaps.

A permament fix, if you wish to drive with open exhaust all the time, is to pull the vacuum hose off.

I suspect more that your actuating mechanism (mechanical part) is seized, as you heared a kind of spring sound? Check your mufflers if the levers from the actuators move freely.

Got my grills from Zunsport. They are excellent fit and I believe they ship everywhere in the world. Mine arrived in South Korea within a week.