911 2

went to look at a carrera 3.2 1987 today but it wouldnt hold idle especially after starting and blipping on the throttle is there any common problem which causes tjis or wjat would be the best thing to check first

Peter Zimmermann

"Blipping" the throttle on a modern, electronic-controlled car is not a good thing to do. Sometimes it's enough to confuse the fuel injection. Of course, the issue should be mentioned to your professional mechanic if you decide to proceed with a PPI.
Pete

911 2

its not just blipping its ok when driving come to a junction and it cuts out

My87Targa

hmm mine has been doing that from time to time, im getting ready to buy a new O2 sensor cuz mine was disconected, also someone said chack the MAF??

lewis9113.2

First thing; try cleaning/renewing the idle stabilizer valve (appx $180.00 to replace).

Bringing the base idle speed up a tad might help in the interim.

scottb

I disagree.

I had a similar problem. I replaced idle stabilizer valve, O2 sensor and head temp sensor. Nothing worked. Then someone suggested that the mixture needed adjustment. I took it to my mechanic who adjusted the mixture. Problem solved.

Sometimes the easiest solutions are the best.

Scott

Richard C2S

Interesting. I just had my CO2 adjusted. My mechanic found it was a little lean. Down slightly below 1.0. He adjusted it to just about 3.0. Now, the car dies when I come to a stop and disengage the clutch. But not always. Weird. It didn't do this before the CO2 was adjusted.