engine cut out - 111R

[bordseye]

Out for the day today and coming back home after a brisk but not silly run down one of our nicer B roads the engine cut out just as I was turning the corner into my street. It started again at the first turn of the key after 10/15 seconds and ran OK. No warning lights are showing. Plenty of petrol. Battery OK.

Any ideas? The engine has been faultless so far for its 14k miles.

[bordseye]

Hey you miserable lot! I need a bit of help here.

[Mister K]

There were some problems with air-con relay causing a spike to the ECU. I think a new type / modified relay fixed it.
What year is the car?
Does it have air-con? And did you have it on at the time?

[bordseye]

Its a 2007 - one of the last 111Rs. Yes it has aircon but I dont think it was on at the time.

[Gooby]

is it the fly -by-wire ECU?

[carl carlson]

I have a Elise S which does the exact same from time to time. I replaced the air filter and it cures it for a few months.

[purpleperil]

Be interested to know what caused this. Happened to mine last week too - first time ever in 5 years. DBW but no A/C. Just moving slowly along in a traffic que (coasting) and noticed battery light and MIL come on. Dipped clutch, into gear and bump started as I was still rolling - not happened again?

[bordseye]

Gooby said:

is it the fly -by-wire ECU?

Yes it is Gooby. The read out of the ECU this morning lists two throttle sensor related problems, though unfortunately the ECU hasnt been cleared in 3 years and I briefly had an idle speed issue a while back. So whether its the same problem I now have |I do not know.

The ECU fault codes have now been cleared so we will see if it happens again.

Was there not some issue with the fly by wire throttles?