Advice please

[runner911]

Ref. my 2005 DB9.

After starting from cold, if I drive the car in slow moving traffic in first gear ,on light throttle openings the car tends to "lurch" forwards then die almost like it was running on " kangaroo petrol."

As soon as the engine is warm the problem disappears.

Do all DB9's do this or is it the way I am driving it or what ?

[SLacKer]

runner911 said:

Ref. my 2005 DB9.

After starting from cold, if I drive the car in slow moving traffic in first gear ,on light throttle openings the car tends to "lurch" forwards then die almost like it was running on " kangaroo petrol."

As soon as the engine is warm the problem disappears.

Do all DB9's do this or is it the way I am driving it or what ?

Mine doesn't which is a 2004MY. Doesn't help the diagnosis any but I have not heard of this before. Maybe try the Bamford Rose sticky post and ask them.

[BingoBob]

Is it a manual?

[tonyhall38]

my guess would be the throttle bodies need cleaning....Rick from DMS did a video showing how to do it....i would try that first ....

[runner911]

Bingo Bob.

No it's a TT.

[wezzer-45's]

The engine management needs to be flashed to update the software.
This will sort out the surging from cold.

[runner911]

Thank you .

[brumma]

My '07 manual V8V does the same thing. Cleaning the throttle body didn't help me.

[BingoBob]

Could be a vacuum leak or bad MAF? If you have an OBD2 reader, perhaps you could check the trim values to see if the ECU is compensating for wonky air readings?