Thread: no power for about 10 sec after starting

Hi berg450 - welcome to the forum.

When you say it has no power after going into drive, do you mean that drive is getting to the wheels, but the engine has no power to drive it forward? If this is the case, does the engine hesitate or blow any smoke when doing this, or it just won't rev?

After starting it, does it rev freely in park, before putting it in gear?

Just trying to clarify the issue.

Cheers - Gav.

Hi thanks for the answer!
Yes the car moves but slowly (10-20km/h) and does not rev up. No smoke, but when it "wakes up" black smoke comes but only for short time. Then it is fine.
When I park it seems to rev up normally but I am not sure how much. I will try.

I disconnected my MAF the other day and purposely plugged in a faulty one. Had the exact issue you're describing.

So I would say its you're MAF.

Originally Posted by catch-22

I disconnected my MAF the other day and purposely plugged in a faulty one. Had the exact issue you're describing.

So I would say its you're MAF.

The MAF is the sensor directly after the air filter box. Try disconnecting it -ecu will use default values. If problem isn't there-voila maf either needs a clean or replacement. Use maf aerosol cleaner.

Originally Posted by bsperka

The MAF is the sensor directly after the air filter box. Try disconnecting it -ecu will use default values. If problem isn't there-voila maf either needs a clean or replacement. Use maf aerosol cleaner.

umm....yes MAF cleaner = contact cleaner

Berg450 - good to see you're riding the right brand bike...

Thanks for the idea, I have tried it. Disconnected the MAF and started the engine. When parking it revs up freely, but when I drive it stops around 2k rpm for about 5 sec (i double checked) even I push full. After it start accelerating like something "opened up". And it happenes even the engine is cold or hot. I tried this morning about 5 times.
Any idea?

Could be oil in the injector harness.Remove acoustic cover and have a look at the plug at the top front of the engine.If it is oily clean the contacts with contact cleaner and see how it goes.
If this is the case,the best long term solution is to replace the harness as you will have ongoing problems. Not terribly expensive.This is a well known issue with TD5s.

Trev.

Originally Posted by bsperka

The MAF is the sensor directly after the air filter box. Try disconnecting it -ecu will use default values. If problem isn't there-voila maf either needs a clean or replacement. Use maf aerosol cleaner.

The ECU doesn't use default values if you unplug the MAF. It substitutes an alternative estimation of airflow calculated using MAP/IAT and AAP (plus AAT in EU3).

The airflow figures from maf/rpm should be close to the figures calculated from map/IAT, aap and AAT if both sets of sensors are in good condition and you haven't ****ed things up by fitting a boost box. That is reason unplugging the MAF works as a check.

Cheers
Paul