hazmanT4s

Hey guys am a new owner first time to have a Porsche , I have a targa 4s 2007 , two days ago I was driving downtown and my car start idling weird start going from normal to 1200 rpm and then stays up till I start driving , and then when I turned off the engine and then restart , it was ok , and today it happened again , any ideas what could it be

alpine-al

Your mass air flow (MAF) sensor might be dirty. It is relatively easy to clean. Search the forum for instructions.

hazmanT4s

Thank you, ill try that tomorrow

Slamuth

As another notorious possibility, you might want to consider plugs and coils. I don't know what kind of mileage you have, but I only have 31k miles on my car, and I had the coils cause a similar idle problem. The MAF tested fine. You'll find that coil packs are a common issue for our cars, given their heat and water exposure.

kdurg

no cel ? any modifications done to the car, ie; airbox ? plenum ? if something isn't buttoned up tight you may have an air leak and the car is running too lean. ecu will over compensate and surge idle looking for more fuel.

hazmanT4s

thank you all , my problem is fixed ,,, i took it to my garage , and he fixed in two sec, one of the vacuum hoses was loose . now i can enjoy driving