Hunting Idle!!!! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Tool Pants · 07-05-2005, 11:13 PM

We had an egas and non egas car with this problem at a work on cars day. We cleaned the carbon out of the throttle body. I have not talked to the owners since then to see if that fixed the problem.

Brucelee · 07-06-2005, 05:31 AM

BTW-regular use of Chevron gas will keep the FI clean. Here in Kalifornia, we have crap gas. This is the only brand I use now.

psuball1 · 07-06-2005, 08:22 AM

I am going to buy a bottle of the Chevron FI cleaner today. I hope that this takes care of the issue. I love the car but this erraditic idle is driving me nuts!!

Pablito · 07-08-2005, 06:06 PM

If in fact the spray doesn't work, heres an idea....I've had some idle headaches myself on my 98'.....Three parts took to solve the problem: 1) Idle regulator valve, 2) Fuel regulator valve and 3) Vent line.....When you remove the engine cover you will see a plastic tube (about an inch thick) that makes a U-turn from the throttle body to the oil separator unit (that's your Vent Line), attached to the end of this line and to the throttle body are the Idle regulator and right under that is the fuel regulator....replacing these parts did it for me along with the gas filter under the car. Good Luck!!

aKiNa2 · 07-18-2005, 06:00 AM

how much were the parts?

Rothbauer_Racing · 07-19-2005, 01:57 PM

I had a very similar problem about 6 months ago. I to have the EVO High Flow Air Intake System and which I have been running for over a year now. Great Sound! Anyway I was getting the very same bouncing up and down idle but, no check engine lights??? Well I took some time and reopened the engine compartment to find that one of the clams that hold the tubs together had somehow come loose? I installed it myself and I made sure it was all tight but, I guess it came loose anyway. I reconnected the loose pipe where extra air was getting in and the problem went away.

Recheck all your connection up to the throttle body, sounds like a vacume leak.

psuball1 · 07-20-2005, 09:35 AM

guys, I have done the Chevron additive and gas, put in the new MAF and tightened up my intake making sure all is snug and no leaks. The idle regulator seems fine, I believe this to be true because when I have a cold start the car does not have the "hunting idle" issue until it warms up. anymore suggestions???