Idle Speed

[dlipka]

Hi Folks,

My '99 C4 hunts at idle when it is warm - sometimes.... A couple of quick taps of the accelerator usually makes the problem go away for a minute or so. The car does it only when it is warm and the size of the fluctuations are reduced when the ac is on. This car is fitted with the e-gas system.

Any suggestions / thoughts, would be appreciated.

Derek

[munro86]

Hi Folks,

My '99 C4 hunts at idle when it is warm - sometimes.... A couple of quick taps of the accelerator usually makes the problem go away for a minute or so. The car does it only when it is warm and the size of the fluctuations are reduced when the ac is on. This car is fitted with the e-gas system.

Any suggestions / thoughts, would be appreciated.

Derek

Hi,

I have a 99 c2 that did this for quite sometime until I cleaned out the throttle body with some carburettor cleaner. When warm and at idle, it would drop down to about 5-600 rpms and then gradually come back up to 900rpms. Very rarely it would stall,but once I gave the throttle body a clean out I've also noticed it fires up quicker and straight away settles into a solid idle right on 900rpms. You can get a DIY description on Rennlist where Orient Express and Cosmos explain it under a thread entitled "Correcting a lumpy or erratic Idle' or something to that effect.

[zdr2k]

Hi Folks,

My '99 C4 hunts at idle when it is warm - sometimes.... A couple of quick taps of the accelerator usually makes the problem go away for a minute or so. The car does it only when it is warm and the size of the fluctuations are reduced when the ac is on. This car is fitted with the e-gas system.

Any suggestions / thoughts, would be appreciated.

Derek

Hi,

I have a 99 c2 that did this for quite sometime until I cleaned out the throttle body with some carburettor cleaner. When warm and at idle, it would drop down to about 5-600 rpms and then gradually come back up to 900rpms. Very rarely it would stall,but once I gave the throttle body a clean out I've also noticed it fires up quicker and straight away settles into a solid idle right on 900rpms. You can get a DIY description on Rennlist where Orient Express and Cosmos explain it under a thread entitled "Correcting a lumpy or erratic Idle' or something to that effect.

+1 on this one. I removed and cleaned my TB. This "fixed" erratic idle issue. Also with a TB cleaner moistened rag, wipe down the interior of the inake as much as possible.