Ok, Vantage V8S stalls twice while rolling in bumper to bumper traffic, with the clutch pedal down. On each stall, the Fail Safe light came on.

On the second restart, Check Engine and the Yellow warning triangle lights came on and stayed on. I also have the message Emission System requires service.

This occured after I filled the car up with gas, so my first instinct was to check the gas cap. I stopped as soon as I could and removed the gas cap and replaced it. This didn't help.

I do note that there are quite a few threads on this top, but the threads do not make it clear whether the lights will go out on their own or whether I need to take the car in to have the codes checked and cleared.

 

according to a post in this thread, if the error is corrected, ie after gas fillup and gas cap not on correctly, it takes a few starts for the message to go away.

https://www.6speedonline.com/forums/...d-message.html

Not several threads listed in the FAQ in the electrical section which may/may not help.

 

Had same problem a few times at low mileage as well. Just kept driving as per various threads suggested. Went away by itself. First time it took about 600 mi. Less time for subsequent stalls.

 

How much fuel was in your tank when you stalled? Over half a tank? From what I've seen, this is often due to a failed vapor recirculation/vent line in the fuel tank that sucks up fuel and dumps it into the engine (technically, dumps it into the intake manifold).

Have you had the dealership update the fuel mapping for the car? It's a free update and is supposed to help with that. I had it done 2 years ago and haven't had the stalling problem since.

 

I had a full tank of gas. The car was delivered in July of this year, and it's a 2015. I would be surpised if the car did not have the lastest software onboard. Excuse the lack of know but perhaps you mean "update" within the sense of a fuel "remap"?

 

Just bought an OBD II scanner. I'll take a look at the error codes. I at least want to see whether the car is reporting anything "funky". After that, I'll clear the errors and see whether it happens again. If so, I'll drop her in to let the dealer take at look at things under warranty.

I knew I could continue driving, but it sure did spoil my Sunday drive. Out of an abundance of caution, I returned home, stuck her in the garage and switched to another car.

 

After a few of these incidences you really learn to tighten the gas cap each fillup! As I remember on my 2007 Vantage I bought new there was a service bulletin to replace the gas cap. It takes a while for that warning to go off.

 

Same stalling problem, similar production date (04/2014). I also would have assumed that it had the latest software tweaks. As far as the gas cap goes, once it starts clicking I have to assume it's tight enough.

I'd read somewhere that topping up the tank could be an issue so I'm experimenting with not doing that.

 

The newer ones shouldn't have the problem I'm talking about. Supposedly AM quietly tweaked the design of the vapor line so it wouldn't be an issue anymore, and a newer car would have current software.

 

I also had the emision service light on, went to the AM dealer and they told me I have the lambda (oxygen) sensor gone. They replaced it with a new one, since then no more problems nor the emision light coming on

 

DTC codes are your friends. That should tell you what is going on and what needs correcting. 'Emissions' is a broad brush that covers a number of error states, but the codes will be much more specific.

Catch up with Tim at AM of DC, he can also probably pull additional information with the AMDS which will also show other sensor data at the time the error state was triggered.

 

Thank's for the input Stuart. The car is no longer in the DC area, so it won't be serviced there.

Btw, what's the story on the Portfield front pads for Vantage S and GT. I'm not so alarmed by the brake dust on the rears, but I 've got squealing and brake dust on the fronts!!

 

Got it sorted, just about to post a thread

 

https://www.6speedonline.com/forums/...ml#post4209975

Do you want fronts only, or front + rear? I'll send you an invoice.

 

n

This is a wrap. Probably ditch the office early to put on my mechanic's overalls and check the readout on my CAN BUS.

Funny, but the wife said any car that stalls on her, "[s]he would take it right back!"