AU stalling problems.

[ef_classic]

Hi,

Our AU falcon wants to stall in D sometimes.

So if i have it in N and slide it into D the revs will drop to about 200rpm and stall sometimes, it doesnt really recover from it aswell.

I have cleaned the ISC with no results.

I was reading on here that you can test the ISC by disconnected it and runing the car, but it will not start with it disconnected.

Car is Factory dual fuel I6 wagon, it is worse when running on gas.

Any ideas?

[66 coupe]

clean out the throttle body as its most likely got a build up of carbon around where the throttle plate sits. Use carby cleaner spray and a rag to do this, hold it open, spray and wipe... do it a few times till the rag comes out relatively clean, and then try start it with the ISC disconnected.
Adjust the idle stop screw so the engine is idling at around 5-700 rpm with the ISC disconnected, then reconnect the ISC