Engine Stall when Coasting Issue

[ieuanam]

Hi all,

I've searched the forums before and seen loads of posts since the Gaydon era Vantage came out up to 2016 that have an issue when you coast to a stop, it will stall.

In the 20 years of the cars existence - has anyone found a fix yet?

Is it needing new fuel lines to a catch can or is it just a quirk of the car?

Thanks all

[Vsix and Vtec]

My A70 Supra did this,it turned out to be unmetered air bypassing the filter.

[ieuanam]

Vsix and Vtec said:

My A70 Supra did this,it turned out to be unmetered air bypassing the filter.

I take it as a leak somewhere past the air filter? It's odd as people have had this issue since new - I would like to think Aston had good seals on the cars!

[paulrog1]

What car have you got? Manual, auto or SS?

Does the engine idle ok? plus can you smell petrol from the exhaust?

Could be a vacuum leak, has there been any engine work completed recently?

The engine will try to keep to a preset idle, but it will struggle if the fuel or ignition systems have a fault.

Are there any fault codes plus are the short and long term fueling trims ok?

[ieuanam]

paulrog1 said:

What car have you got? Manual, auto or SS?

Does the engine idle ok? plus can you smell petrol from the exhaust?

Could be a vacuum leak, has there been any engine work completed recently?

The engine will try to keep to a preset idle, but it will struggle if the fuel or ignition systems have a fault.

Are there any fault codes plus are the short and long term fueling trims ok?

I've only had this issue twice in the last 2 years so every time I "coast" to a stop, I just downshift rev match and that seems to fix all the problems BUT it's a problem that should have had a fix by now and with how my brain works, I need to know it! Especially since these cars came brand new with the issue!

I have a Manual 4.3 - engine idles okay - can't smell petrol from the exhaust - car goes in for service early Feb - no fault codes with this issue from all the forums I can see including no fault codes with my own - not sure what you mean by short and long term fuelling trims?