I just drove my Boxster 2005 987 in 2 PCA Drivers educationnal and after the last one I have a hard time downshifting to 4th gear .... anyone have a clue on whats wrong and how to fix it ? anyone experienced the same problem and how much do you thing it's gonna to cost on repair ?
thanks

 

did it get better after the car cooled down? does/did the clutch pedal feel different? all other gears okay ? shifter feel/felt different?

 

It's not better even the day after .
the clutch feels normal , all other gears are okay, shifter feels normal.
The noise is also from third gear to 4th and 4th to third

 

a noise ? you didnt say that before. if its grinding it maybe syncros

 

yes it's a grinding noise
if it is the syncros ,what are the remedy ?
any idea of the cost ?
is it going to deteriorate ?

 

if its the syncros the trans needs to come out and the tranny gone through [inspected]. i dont know the cost. it wont get better

 

thanks for the info
i'il get it checked

 

How many miles on the car? How many track days on the car?

 

42000 miles and 5 track days.
I bought the car at 35000 miles

 

Even if the gear oil was changed on the day you bought the car, with 7000 miles and 5 track days on it (more the track days than the mileage) I would recommend changing the oil to see if that helps.

 

maybe the oil never been changed .
Whats the recommended frequency ?

 

There's a difference between Porsche's recommended frequency and my recommended interval. IIRC, Porsche says 90,000 miles on these cars!!!

Just for starters I think that's a huge amount of mileage. I tell people to change their gear oil every 30,000 miles or 2 years, whichever comes first. This is for a street driven car. These are sports cars. Even on the street people drive them hard. You know how owner's manuals have a different oil change interval for the engines for gentle versus extreme conditions? They should publish the same thing for gear oil intervals.

Once you start taking it to the track, that number is out the window. If you're just doing track days/DEs and not actually racing the car, I would change your gear oil every 4-5 events regardless of street mileage. Once you're on the track it's about hours, not miles. The abuse of the track significantly increases the wear on the oil and knocks it's lifespan way down. I think many gearbox issues could be prevented by more diligent service intervals on people's track toys. People are religious about changing their engine oil on these cars, but the gear oil seems to be an afterthought.

My personal cars get their gear oil done once in the Spring before I head out to the track. I tend to get half a dozen track days a year. At the end of track season, going into the Fall, I change it again. I consider it cheap insurance.

 

thanks matt,
I'll start with that and I'll let you know the result

 

I notice it only makes the noise with speed around 60-65 mph when I shift to 4th or downshift to 4th .at lower speed no noise

 

did you buy this car new ?