BC_CLETA

Well i had a problem with my idling for sometime now and couldn't figure it out. It would bounce from 900 to 12oo plus at times and was very annoying. The problem started after a rain and the car didnt start, this was last year. Replaced the idle control unit and it fixed the problem for a day then started all over again. I looked for vacuum leaks, O2 sensor. Then a mechanic (i'll give his name if anyone needs him) adjusted the mixture and the idle and fixed it once and for all!!! No more bouncing, its been over two weeks now and looks like the problem is solved. It does it once in the cold mornings for about 2 minutes then levels off and you can hear the motor calming down.

Next problem i had was my clutch wouldn't pop back up. It would have pressure going towards the floor, but id have to lift it with my foot. I almost ran into someone, so glad that problem was fixed.

Anyways the fix for that was the slave cylinder front rubber ring was worn. So it wold have pressure going down, but not back up. This was fixed with an O-ring underneath the original and looks like that problem was solved too.

My car is an 88 targa

theiceman

Great news BC
Why not jump in with both feet ?

Show us some pics of your car and how you cam about her.

PS hunting idle is somewhat common and is due to a rich mixture. A good mech with an exhaust analyser was definitely the way to go ..

welcome aboard

Amber Gramps

Welcome BC. sounds like your idle issue could have had several causes. Glad it is fixed.

BC_CLETA

Fantastic i didnt know it was that common. Funny i used to hear my neighbors 911 do the same thing. i'll take some pic of the car and post. Currently i have 190k miles and i use it as my daily driver for the past 7 years

ron mcatee

BC, do you have a picture of the rubber ring you are talking about? or a Porcshe part number?

theiceman

Mine did it after I replaced the airbox. Smoothed right out after my CO adjustment.

911 Rod

You can adjust the mixture on a 3.2?
SC yes, I don't think on a Carrera.
I hate to tell you this but it's a sporadic problem and will be back.
Ask me how ($$$) I know .....

ron mcatee

Yes you can & have to adjust the CO on a Carrera 3.2.

BC_CLETA

I dont have a pic but the solution is very simple. Its a small O-ring ( from kragen) that fits around your pinky. Its an Oring set

Just remove the old rubber and dont damage it more. its flanged on the outer ends to make a tight seal. then once removed put the Oring on first, then put the old rubber on top of the Oring. The o-ring may cost about 5cents.

And yes once the CO mixture was adjusted. it leveled off that instant. It was fantastic!!!!!!!!!!!!!!!!!!

ron mcatee

Is it on the slave cylinder on the transmission or in the pedal cluster. Tha's why a picture would help.

Thanks.

BC_CLETA

oh sorry not a good mechanic, its on the slave cylinder. Its the rubber closer to the floor. Il see if i can dig up a pix somewhere

ron mcatee

BC, the slave cylinder for the clutch is mounted on the transmission. You must be talking about another boot. A picture would be helpful. Thanks.

BC_CLETA

Im calling it the wrong name, iits an 88 911. if i follow the clutch pedal there is a cylinder there. Then attached to the slave is a blue hose that then runs up to the brake resevoir in the bonnet.

Il try and get pics im at work now

BC_CLETA

http://www.autopartsworld.com/1988_p...der_parts.html

this website has one, its the same one that went bad on mine, but my 911 has it attached inside by the floor, by the gas, brake assembly