idle surge

Adio · 12-16-2008, 05:32 AM

I came outside today and started my car to warm it up because it is 20 degrees out and it was running perfect for about 5 minutes then out of no where the RPM'S start to surge. it has never done this before anyone have any ideas?

Adio · 12-16-2008, 08:09 PM

no one?

MR2 Drifter · 12-17-2008, 12:34 AM

Let it heat up longer?

MR2enV · 12-17-2008, 01:57 AM

Be more specific..... does the idle drop real low? or does the Rpm start jumping up and Down? And how warm is your car after five mins( look at the temp guage and let us kno where the needle is at)

Adio · 12-17-2008, 08:09 AM

it goes from 2000 to 1000 and once it heats up it goes from 1500 to 1000

MR2enV · 12-20-2008, 12:31 AM

is the car at normal temp when it does this

deucesquared · 12-27-2008, 04:19 PM

My car is doing this as well. It just started but I recently moved from Fla to Va and my Deuce has never experienced this cold weather. The weird part to me is that it doesn't do this immediately. It heats the car up a little bit and then begins to take the idle up and down. Let me know if this is a quirk or potentially a big problem.

Primera · 12-30-2008, 11:08 PM

my n/a does this as well. From reading around I am led to believe its because air is leaking past the butterfly valve in the throttle body. I took mine apart for cleaning and held the throttle body up to the sun and saw lots of light leaking past all around the valve. Unless someone else has a better opinion I suggest checking that.

12-16-2008, 05:32 AM	#1 (permalink)
Adio 5S-FE Join Date: Oct 2008 Posts: 30 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (1/100% )	idle surge I came outside today and started my car to warm it up because it is 20 degrees out and it was running perfect for about 5 minutes then out of no where the RPM'S start to surge. it has never done this before anyone have any ideas?

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12-16-2008, 08:09 PM	#2 (permalink)
Adio 5S-FE Join Date: Oct 2008 Posts: 30 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (1/100% )	no one?

12-17-2008, 12:34 AM	#3 (permalink)
MR2 Drifter No Drifting Skills Join Date: Jun 2008 Location: Chicago Posts: 948 Thanks: 3 Thanked 18 Times in 18 Posts iTrader Rating: (2/100% )	Let it heat up longer?

12-17-2008, 01:57 AM	#4 (permalink)
MR2enV 21.1 Gigawatts Join Date: Mar 2007 Location: Miramar, Florida Posts: 1,068 Thanks: 0 Thanked 10 Times in 10 Posts iTrader Rating: (4/75% )	Be more specific..... does the idle drop real low? or does the Rpm start jumping up and Down? And how warm is your car after five mins( look at the temp guage and let us kno where the needle is at)

12-17-2008, 08:09 AM	#5 (permalink)
Adio 5S-FE Join Date: Oct 2008 Posts: 30 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (1/100% )	it goes from 2000 to 1000 and once it heats up it goes from 1500 to 1000

12-20-2008, 12:31 AM	#6 (permalink)
MR2enV 21.1 Gigawatts Join Date: Mar 2007 Location: Miramar, Florida Posts: 1,068 Thanks: 0 Thanked 10 Times in 10 Posts iTrader Rating: (4/75% )	is the car at normal temp when it does this

12-27-2008, 04:19 PM	#7 (permalink)
deucesquared Some Skills Join Date: Apr 2008 Posts: 50 Thanks: 5 Thanked 0 Times in 0 Posts iTrader Rating: (2/100% )	My car is doing this as well. It just started but I recently moved from Fla to Va and my Deuce has never experienced this cold weather. The weird part to me is that it doesn't do this immediately. It heats the car up a little bit and then begins to take the idle up and down. Let me know if this is a quirk or potentially a big problem.

12-30-2008, 11:08 PM	#8 (permalink)
Primera Cage Fighter Join Date: Aug 2007 Location: Tinker AFB, OK Posts: 125 Thanks: 17 Thanked 2 Times in 2 Posts iTrader Rating: (4/100% )	my n/a does this as well. From reading around I am led to believe its because air is leaking past the butterfly valve in the throttle body. I took mine apart for cleaning and held the throttle body up to the sun and saw lots of light leaking past all around the valve. Unless someone else has a better opinion I suggest checking that.