View Full Version : Idle & Boost Problems? Anyone else???


Peter777
02-19-2006, 02:33 PM
So I've given it a bit of time. I picked up my SS SC at the end of November.

(I have 3600 KM's on it btw)

Here are the problems.

Thus far I have not been able to get past 8-9 PSI :( this kills me, I can't describe how upsetting it is to buy a performance car and be losing a significant amount of performance, though I am trying to be patient. Someone told me the first time they dinged it off 12psi was at 3000 miles so about 4500 kms. I'm not even close at 8psi. What is going on?

Am I going to have a hard time if i go to the dealer? Should I? Is there something I'm not doing? I mean im maxing out and believe me, I am pushing her WOT and really getting up there.


Also, I often find that when I'm in neutral I don't get a steady idle, it fluctuates up and down, this has actually caused me to stall a few times when backing up since its tricky to make fine adjustments on the clutch when your engine is idling up and down slightly as you back up.

Any suggestions? Anyone have common problems that they fixed etc? Thanks!!! :) :cssNET:

Chevypowered
02-19-2006, 02:39 PM
What elevation are you at??

BooSSted
02-19-2006, 02:42 PM
I have the same problem with my Idle but not with the boost. Do you still have the stock boost guage that reads in Kpa??

Peter777
02-20-2006, 12:31 AM
I have the same problem with my Idle but not with the boost. Do you still have the stock boost guage that reads in Kpa??

Yep, stock boost gauge. Do you think it is the gauge? I mean other people on the same gauge are getting higher readings so I'd imagine it is all relative right?

I don't really know what elevation means in this situation :S sry.

GotBoost?
02-20-2006, 12:34 AM
Well i dont hit 12.5 psi untill i get close to redline.

06black
02-20-2006, 12:39 AM
i'd say take it to the dealer and scan the PCM see if they find any thing...the dealer schould be more than willing to work with you

Chevypowered
02-20-2006, 12:41 AM
Yep, stock boost gauge. Do you think it is the gauge? I mean other people on the same gauge are getting higher readings so I'd imagine it is all relative right?

I don't really know what elevation means in this situation :S sry.


Are you at sea level or at 5,000 ft in the mountains. How high are you from sea level?

2K5SS/SC?
02-20-2006, 11:17 AM
Well it says he's in Ottawa. I found it to be like 374 feet. He should be getting the 12.5 psi. Probably needs to get the boost gauge recalibrated.

BADZSS06
02-21-2006, 10:45 AM
mine will surge at idle every once in awhile. i just rev it up a little and it straightens out. it is annoying but im hoping the stage kits clear it out

glockglade
02-21-2006, 11:10 AM
a while ago a couple other people had this problem, they took it to the dealership and i think if i remember correctly they fixed a screw on the bypass valve and reflashed the pcm, also your altitude greatly effects this problem i live in palm beach and sometimes i can boost around almost 14 w/ an intake and exhaust the idle probllem is common blame the drive by wire system for that, or praise it b/c it is used for throttle control on jet airplanes.

BLKSS
02-21-2006, 12:04 PM
I read 90 to a 100. Idle issue is normal. Unless it stalls then you need an update.

M62SS
02-21-2006, 12:20 PM
i read 90 kpa a max boost near redline never see more tan 90kpa and my idle do the same thing almost once a week....its pretty common with our cars...

Peter777
02-21-2006, 07:33 PM
a while ago a couple other people had this problem, they took it to the dealership and i think if i remember correctly they fixed a screw on the bypass valve and reflashed the pcm, also your altitude greatly effects this problem i live in palm beach and sometimes i can boost around almost 14 w/ an intake and exhaust the idle probllem is common blame the drive by wire system for that, or praise it b/c it is used for throttle control on jet airplanes.

I will mention that. I just hope I don't get idiots who argue with me or tell me 'ahhh man don't worry the car is fine'

Seems everything is always fine when it is under warranty but nothing is right when you have to pay for it.

JohnfromVA
01-30-2007, 09:29 PM
my car is idling at 750rpm how do I fix that. It goes way below 1000 and almost wants to stall but doesn't. HELP!!!!

Johnboy12358
01-30-2007, 09:51 PM
You people with the idle problem, go to the dealer and say "I heard there is an updated flash for my car to fix a problem with idle surge"
They'll take your car for 60-90 minutes, flash it, and when you get it back it will be fixed. As for the only getting 8psi, i would say calibration too, but have them look at that also.
I hit 12.5 psi as soon as i left the dealership.....

edit:
I forget the link, but GM has a site where you enter your VIN and it gives you the PCM calibration info, and you can take that to the dealer (i did) and show them the line that addresses idle surge, that way they know exactly what to ask when they call the techline about it

βКˉSuPerCharged
01-30-2007, 10:04 PM
Yeah when I got Stage 2 it got rid of that damn stumbling idle.
But as someone said. NEW CAR= A Problem = take it to dealer= warranty baby!

Johnboy12358
01-30-2007, 11:02 PM
Yeah when I got Stage 2 it got rid of that damn stumbling idle.
But as someone said. NEW CAR= A Problem = take it to dealer= warranty baby!

Yeah thats another way to do it. :cssNET: I got the flash before I got my stg2 and it fixed my problem with the idle surge