Signum 3.0cdti hesitant acceleration / flatspot

[t1m]

Hi all

My Signum seems to have developed a fault.

The acceleration is very hesitant and jerky.
The engine is up to temprature, it almost feels like the engine is bogging down, flat spot or a dead pedal.
I have no fault indications on the display.

Any idea's


Tim
ps this is on vxon too !!

[dieseldog]

A friend of mine had a similar fault. It was to do with drop in the common rail fuel pressure. There is a Vaux field remedy out for this problem, but it is expensive - 8+ hours labour plus parts. Can't remember the field remedy no. but I'm sure someone here will know. Is your Sig still under warranty?

[Big Sig]

That field rememedy replaces the SCV's doesn't it?

[dieseldog]

That field rememedy replaces the SCV's doesn't it?

Yep, that's the one.

[dieseldog]

Have you done a pedal test to see if there are any fault codes?

http://www.vectra-c.com/forum/showthread.php?t=81742

However, if it is to do with fuel pressure & suction valves, it probably won't show anything (as with my friend's car), but when Vx hooked it up to Tech2 it showed a variance in fuel pressure.

[t1m]

No it not under warranty.... this sounds expencive !!!

Im going to try the pedal test now !

[t1m]

ok flash code of

10,4,6,10 P0460 - Fuel Level Sensor Circuit

[Celes]

you edit way too quick

[t1m]

haha took me a cpl of mins to suss out the code reading

[dieseldog]

ok flash code of

10,4,6,10 P0460 - Fuel Level Sensor Circuit

I can't see that has anything to do with the problems you're experiencing. Diagnosis, anyone?