I had an interesting experience the other day.

I was caught behind an indecisive driver who was dawdling along in an urban area, causing me to drop down to 10-15 Mph in second. When she eventually turned off, I accelerated, without flooring-it or redlining it, and before I could change-up to third the whole engine so a missed a beat, for about a second, that I was thrown sharply foward causing the inertial mechanism in the seat belt to actuate. The engine was doing somewhere between 3.5-4K RPM. Afterwards, it resumed without apparent ill-effect.

!00hp 16v saloon, 2003, with 25k on the clock. The road I was travelling-on had a slight incline (Approx 1 in 20), was straight and smooth.

I never had this before. Any ideas ? Is this likely to be recorded in the EMU log ?

Nick,

24/09/06

Heatsoak? Are you running the standard airbox?

Its an Alistair - completely and utterly bog-standard and unmodified.

Engine was not overheating, bearly at operating temp - Morning commuting journey to work 6 miles, the judder occured at the 5 mile point.

Various thoughts have occured re causation - rev limiter in EMU software, a temporarily snagged cam belt causing whiplash on release (metal to metal contact ?), backfire caused by blocked injector, massive radio frequency interference with the EMU (Cab offices and military transmitter in the vicinty)- I presume that a diagnostic dump will reveal.

Nick

25/09/06