Erratic Idle
10-14-2007, 04:35 PM
#1
Three Wheelin'
Thread Starter
Erratic Idle
It doesn't happen all the time but most of the time my idle will be erratic (or is it considered surging ?)
But when I come to a stop my car will idle around 650 maybe 700, hard to tell using the gauge, but then it will increase on it's own to over 1,000 rpm's, then back down but below 650 to where it seems as if it is going to die, then back up again and down again and will do this unless I give the accelerator a little push to even it out. Very annoying and embarrising.
But when I put the A/C on the idle will go up to 800 rpms and the problem with the erratic idle goes away.
So do I need to adjust my idle up to 800 to eliminate the problem when I do not have the A/C on ? Or ?
Thanks in advance to those that can help me out here since really this is the first issue I have had with the car since I got it 6 months ago.
Oh I did clean the throttle body just recently hoping that would fix the issue but I guess not.
But when I come to a stop my car will idle around 650 maybe 700, hard to tell using the gauge, but then it will increase on it's own to over 1,000 rpm's, then back down but below 650 to where it seems as if it is going to die, then back up again and down again and will do this unless I give the accelerator a little push to even it out. Very annoying and embarrising.
But when I put the A/C on the idle will go up to 800 rpms and the problem with the erratic idle goes away.
So do I need to adjust my idle up to 800 to eliminate the problem when I do not have the A/C on ? Or ?
Thanks in advance to those that can help me out here since really this is the first issue I have had with the car since I got it 6 months ago.
Oh I did clean the throttle body just recently hoping that would fix the issue but I guess not.
10-14-2007, 05:31 PM
#3
Drifting
Join Date: Feb 2006
Location: Elk Grove, California
Posts: 2,647
Likes: 0
Received 2 Likes
on
2 Posts
Steve: I had the same problem with the 996; it was surging and hunting, especially when I'd come up to a stop light or start in the morning...and I did like Porsche 911 said, but in addition, I took off the throttle body and cleaned the front AND back of it. You don't have to disconnect everything, just enough to be able to turn the TBt and see the back side. then I used CDC cleaner but didn't soak it...sprayedit lightly, then took a rag and soaked the rag in the CDC. Remember to take off the red plastic extension tube....I didn't and it shot off and went around the corner of the plenum and I had a hell of a time fishing it out. If if falls down the intake you're screwed and have a lot of stuff to take off to find it.
We'll have to get together again in Isleton or Rio Vista and have lunch with some of the other local P guys. You should have come up for Loren's Work on Cars Day. We're going to organize another one.
Chuck
We'll have to get together again in Isleton or Rio Vista and have lunch with some of the other local P guys. You should have come up for Loren's Work on Cars Day. We're going to organize another one.
Chuck
10-15-2007, 11:24 AM
#7
Race Car
Just remove the 2 screws, saving the gasket and soak the valve with carb cleaner. Make sure the vertical window in the unit moves freely. Reinstall with gasket.
Trending Topics
10-17-2007, 05:04 PM
#9
Three Wheelin'
Thread Starter
I just went ahead and cleaned it and wow it was really gunked up. I thoroughly cleaned-it using the carb cleaner and some medical grade cotton tipped applicators which allowed me to get well into each opening including behind the vertical window, now it looks close to new, and the vertical window does move freely.
I just started it to make sure that it did since I had disconnected something, but I will not be able to take it for a drive yet to see if that corrected this issue or not as I am still working (I work from home most of the time). So I will let you know if I am good to go once I can take it for a drive.
Thanks again
10-17-2007, 05:25 PM
#10
Three Wheelin'
Join Date: Jan 2007
Location: Peoria, AZ
Posts: 1,258
Likes: 0
Received 0 Likes
on
0 Posts
10-17-2007, 05:30 PM
#11
Three Wheelin'
Thread Starter
NO...the problem with Q-Tips (brand name BTW) is that they are too soft and will leave particles from the end when using solvents like carb cleaner. They are good for the ears and baby things, but not recommended for automotive work.
The medical grade units are designed to apply ointments etc. and will not leave any particles and will not break down when using solvents like carb cleaner
The medical grade units are designed to apply ointments etc. and will not leave any particles and will not break down when using solvents like carb cleaner
10-18-2007, 07:17 PM
#12
Three Wheelin'
Thread Starter
OK, just went on short drive to the grocery store with a few stop signs and lights, and once the car warmed-up the idle, without the A/C on, was around 650 to 700 but did not surge or drop, it stayed pretty stable. So right now I am thinking the problem has been fixed, however I will do another drive as soon as I can where there are a lot more stops and starts in traffic and really test this out because that was when I really noticed the issue occuring.
So stay tuned
BTW...coming back from the grocery store a small pickup truck pulled up next to me in the turn lane, and the gorgeous girl driving the car just smiled and waved at me, so I had to wave back but then she was gone...shhh, don't tell the wife, but yes I still got it
So stay tuned
BTW...coming back from the grocery store a small pickup truck pulled up next to me in the turn lane, and the gorgeous girl driving the car just smiled and waved at me, so I had to wave back but then she was gone...shhh, don't tell the wife, but yes I still got it
10-18-2007, 11:13 PM
#14
Newbies Hospitality Director
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Join Date: Apr 2005
Location: Winston-Salem, NC
Posts: 18,084
Likes: 0
Received 33 Likes
on
33 Posts
OK, just went on short drive to the grocery store with a few stop signs and lights, and once the car warmed-up the idle, without the A/C on, was around 650 to 700 but did not surge or drop, it stayed pretty stable. So right now I am thinking the problem has been fixed, however I will do another drive as soon as I can where there are a lot more stops and starts in traffic and really test this out because that was when I really noticed the issue occuring.
So stay tuned
BTW...coming back from the grocery store a small pickup truck pulled up next to me in the turn lane, and the gorgeous girl driving the car just smiled and waved at me, so I had to wave back but then she was gone...shhh, don't tell the wife, but yes I still got it
So stay tuned
BTW...coming back from the grocery store a small pickup truck pulled up next to me in the turn lane, and the gorgeous girl driving the car just smiled and waved at me, so I had to wave back but then she was gone...shhh, don't tell the wife, but yes I still got it
10-18-2007, 11:15 PM
#15
Three Wheelin'
Thread Starter