2004 Toyota Avensis D4d
Acceleration dies when engine warm.

Avatar
Colin Ryall
Driver
1 points

Problem added: Oct 19, 2020 (1 month ago)
The car looses power when warm. I had the diagnostics checked and it showed a faulty sensor on the air filter. This was replaced and there were no more faults on the diagnostics checks. I went for a test drive and the fault was there still. I returned to the garage and they were unable to find any more problems with another diagnosis test. There was also less power than before the sensor was changed. Can you please give any advice to resolve the problem.
Regards, Colin

Car details
Car: Toyota Avensis
Variant: D4d
Model Year: 2004
Category: Running Rough, Starting & Power Loss
Replies and Fixes
Avatar
whittingehame
Legend
15,996 points

Oct 19, 2020 (1 month ago)
Could try changing the fuel filter .
Avatar
Colin Ryall
Driver
1 points

Oct 19, 2020 (1 month ago)
Replying to post by whittingehame:
Could try changing the fuel filter .
I have changed fuel and air filters along with oil change and filter. Thank you
Avatar
whittingehame
Legend
15,996 points

Oct 19, 2020 (1 month ago)
Check this ,

Toyota Avensis D4D: 05 Toyota Avensis D4D losing power


UK Auto Mechanic:

I think your EGR is clogged up and jammed open. Also your intake where it is situated will probably be blocked severely.

Remove the EGR assembly and the elbow pipe. Ensure the pipe is clear. Inspect the EGR - the valve should be closed - if it is stuck open - you will require a replacement unit. I have tried cleaning these in the past and they may work for a little while but can rejam again in a short space of time. If it is closed - but just clogged - clean it all as best you can with a degreasing agent. Also clean the intake manifold. There should be a visible square hole, plus 2 small side holes which appear when you clean all the carbon deposit away. A Vacuum cleaner may be needed to remove anything you manage to scrape away.
To test the EGR electrical functionality - plug the EGR connector on.
Ask an assistant to switch the ignition on (but don not start) and then switch ignition off. You should see the EGR run a clean cycle which will see the valve move in and out.
If no movement is seen - then the EGR maybe jammed and failed.
I have never seen a wiring electrical fault to one of these yet - so I would feel confident in saying it would be component failure rather than the wiring.

If happy with a clean out or replacement of the EGR valve - give it a good blast up a long hill or a long straight so you can give the engine plenty of "Load" to blast the loose carbon out of the exhaust system.

I hope this helps.
Avatar
Colin Ryall
Driver
1 points

Oct 19, 2020 (1 month ago)
Replying to post by whittingehame:
Check this ,

Toyota Avensis D4D: 05 Toyota Avensis D4D losing power


UK Auto Mechanic:

I think your EGR is clogged up and jammed open. Also your intake where it is situated will probably be blocked severely.

Remove the EGR assembly and the elbow pipe. Ensure the pipe is clear. Inspect the EGR - the valve should be closed - if it is stuck open - you will require a replacement unit. I have tried cleaning these in the past and they may work for a little while but can rejam again in a short space of time. If it is closed - but just clogged - clean it all as best you can with a degreasing agent. Also clean the intake manifold. There should be a visible square hole, plus 2 small side holes which appear when you clean all the carbon deposit away. A Vacuum cleaner may be needed to remove anything you manage to scrape away.
To test the EGR electrical functionality - plug the EGR connector on.
Ask an assistant to switch the ignition on (but don not start) and then switch ignition off. You should see the EGR run a clean cycle which will see the valve move in and out.
If no movement is seen - then the EGR maybe jammed and failed.
I have never seen a wiring electrical fault to one of these yet - so I would feel confident in saying it would be component failure rather than the wiring.

If happy with a clean out or replacement of the EGR valve - give it a good blast up a long hill or a long straight so you can give the engine plenty of "Load" to blast the loose carbon out of the exhaust system.

I hope this helps.
Thank you.
Avatar
Colin Ryall
Driver
1 points

Oct 19, 2020 (1 month ago)
Replying to post by Colin Ryall:
Thank you.
Thank you.
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