revs dropping ryt down almost cutting out

Post by **Merlin** » Tue Apr 02, 2013 10:48 am

Any holes in the exhaust, specifically before the O2 sensor?

Post by **Merlin** » Tue Apr 02, 2013 10:57 am

I would have a quick look at the flexi pipe

Sometimes a leak is not apparent untill you get down on the floor and someone blips the throttle.

Post by **NafemanNathan** » Tue Apr 02, 2013 11:51 am

Does it do this when the engine is cold/warm/hot?

Post by **Thebusofwoe** » Tue Apr 02, 2013 11:57 am

NafemanNathan wrote:Does it do this when the engine is cold/warm/hot?

X2 to that. Does it just die or does it come back up to idle and stay there?? Hunting??

A1ex · Post by **A1ex** » Tue Apr 02, 2013 12:08 pm

Mine does this too from time to time; drops to about 500rpm for a couple seconds then picks back up to 800rpm and settles. It doesn't hunt, only drops down as the revs drop after it's been taken out of gear...

judderod · Post by **judderod** » Tue Apr 02, 2013 12:10 pm

Blocked or dying IACV.

A1ex · Post by **A1ex** » Tue Apr 02, 2013 12:16 pm

Sorry, bit of a thread jack here

judderod wrote:Blocked or dying IACV.

Is there an IAVC on the ATR TB?

Post by **Merlin** » Tue Apr 02, 2013 12:18 pm

The IACV is on the intake mani. The stock ATR TB has no FITV

A1ex · Post by **A1ex** » Tue Apr 02, 2013 12:21 pm

Merlin wrote:The IACV is on the intake mani. The stock ATR TB has no FITV

Thanking you.

Post by **NafemanNathan** » Tue Apr 02, 2013 12:36 pm

The IACV is bolted right on the front face of the intake manifold, behind the fuel rail. Held on with two bolts and has coolant running through the bottom of it. It is likely to be the cause of your troubles. They get carboned up.