Many of us V8 Vantage owners come across a rather unpleasant problem... our cars stall while coasting to a stop, taking away our ability to steer, brake effectively, or maintain a smile.
And with that, welcome to my first blog post about Aston Martin ownership! Heck yes, segue.
This problem happened to me a few times and it drove me nuts. Several other owners had reported the same issue, and all agreed that it happened under the same circumstances: the gas tank was more than half full and it happened as they were coming to a stop. The gas level made me believe it was fuel-related. It was commonly accepted, too, as the bandaid solution is to keep your tank less than half full at all times. I pored over parts diagrams and the workshop manual trying to figure out where the problem could be. Eventually, I took the car to my local dealership where my buddy Tim worked at the time. He's an Aston Martin Master Technician, and he knows the cars extremely well.
It didn't take Tim too long to get an answer for me. He even managed to take a picture of the problem, which was inside the gas tank. As it turns out, the fuel vapor recirculation hose has a tendency to split open. It can then suck up fuel and, under the right conditions, dumps it into the intake manifold. This isn't guaranteed to be the root of your stalling problem, but it's a great place to start diagnosing it.
Here's what the split hose looks like:
The solution is quite simple: Remove the end from the fuel vapor check valve (the black and white plastic part in the pic above), cut the end of the hose cleanly to remove the broken area, and then put it back onto the check valve with a new clamp.
This isn't a complicated task. However, if you decide to attempt this on your own be extremely careful because you're working inside of a tank of gas - it's explodey. Keep flames, sparks, etc, of all sorts far away. You can only get one hand into the gas tank at a time, so you better have nimble fingers to work in there without dropping anything. You also don't want to get anything into the tank - no dirt, debris, grime, oil, small animals, or anything else.
I'll be writing a quick DIY Guide for tackling this job in the near future so stay tuned for that! (Update: Here it is.) If you prefer to take it to your dealership rather than attempting it yourself, it's a quick job and only takes about an hour or so.