Vauxhall Astra 2.0DTI Loss of power at 3000RPM

[marcus61]

I have a Vauxhall Astra 2.0 DTI estate 2001 with 52000 miles on the clock. When on the motorway in 4th or 5th gear and the revs hit 3000RMP the ecu light comes on and there is an immediate loss of power. The light stays on until the engine is restarted, the power and the light then come back up. Could anyone throw a little light on the subject please. Many thanks.

Mark

[ephid0r]

isnt that when the turbo kicks in ?

[marcus61]

It could be...any ideas????

[MarkH]

Airflow sensor is a common fault - about 100 quid from Autovaux, so I'd check the fault code first.

[fearless]

Check oil level first - vacuum system to actuate egr valve / swirl and boost pressure solenoid valves all rely on vacuum being produced by the vac pump - which due to its design, relys on oil !!!

Other than that - check none of the vac pipes/connectors have splits in them allowing a loss of vacuum

Other than that - it probably down to oil contamination in the air flow meter as previously mentioned !!!

[marcus61]

Thanks for the replies, will try the remedies mentioned. Much appreciated.

[aritchie]

my 54 plate 1.7cdti astra with 9k on the clock went through a phase of doing this also, vaux could fnot find anything wrong (no faults were found in ecu!), It hasent done it for about a month now so im just going to hope its magicly fixed itself.

[Big Bad Al]

Dunno if this is worth anything but when I had one of those 2.0 16v DTi`s the turbo seemed to be there all the time, as in it didn`t wait for revs to pick up it was just there all the time from idle

[spanishfly]

We (the met) have a problem with these. As said check the vacuum hoses (especially the ones near the battery with the solenoid) Take of the plenum chamber (at front of engine) i bet it has a gooey gunk type residual, clean this up all is sorted. I bet you've given this diesel a hard life

[marcus61]

It was the Maf sensor, changed it and wow!!! what a difference in performance. I did clean the maf thoroughly but it must have been faulty. Sorry for late reply.