Engine Hunt at Idel - 986 Forum - The Community for Porsche Boxster & Cayman Owners

insite · 04-08-2007, 04:14 AM

or you can just use propane (seriously). auto shops wave an unlit propane torch around the engine bay. if the idle jumps, you found the leak. the propane is sucked into the engine through the vacuum leak and burned in the motor. it temporarily increases the idle.

aussieboxy · 04-14-2007, 04:08 AM

Thanks guys I'll try that.

aussieboxy · 04-14-2007, 04:09 AM

Thanks guys I'll try that and see what I can turn up.

aussieboxy · 04-25-2007, 12:59 AM

Ok I did the smoke test and was unable to find any leaks. Tired both ways with smoke & carb cleaner.

Any other idea's. I really apprecaite your feedback.

aussieboxy · 07-18-2007, 05:53 PM

I thought I would revive this thread. I still have the same problem. Not really a major issue as the car doesn't cut out & I mostly do country driving so you don't notice it, but I would like to get it resolved.

Any other idea's, I had thought of cleaning the MAF although I did pull out the sensor a while back & clean it with no effect.

Thanks for you input guys.

insite · 07-18-2007, 06:29 PM

Quote:

Originally Posted by aussieboxy

I thought I would revive this thread. I still have the same problem. Not really a major issue as the car doesn't cut out & I mostly do country driving so you don't notice it, but I would like to get it resolved.

Any other idea's, I had thought of cleaning the MAF although I did pull out the sensor a while back & clean it with no effect.

Thanks for you input guys.

unplug your MAF to see if the problem goes away. most common causes for a hunting idle are MAF, oil separator bellows, and oil fill tube in that order.

blue2000s · 07-18-2007, 07:53 PM

The 2.7 doesn't have an idle air control valve, the e-gas system controls throttle position to maintain idle.

Also, typically, if your MAF were bad, you'd notice it while the car is running under a steady load, not just at idle. You could try disconnecting the cable harness to the MAF to see if the car runs better, but I doubt that's your problem.

How many miles are on this car? You might just need to clean out your throttle body if there are no vacuum leaks.

aussieboxy · 07-20-2007, 07:39 PM

I have tried to disconnect the MAF wires ie, plug but it is very tight. Is there any special way to disconnect it.

Thanks