Check Engine Light- slow engine acceleration

[Stian747]

Hi,

Thank you for a great forum!

I have a HDJ 100 series with 270 000 on the clock. I just changed the EGR cooler pipe since I found a crack in it last week. After the change, I suddenly discovered that the car accelerated slowly when I accelerated on the highway. I pressed the accelerator and the car shifted down to third and RPM increased as normal, but the power seemed to be less than normal as the speed wasn't picking up. Suddenly after 10 sec whilst still accelerating, the "check engine light" came on.

The light resets when I turn engine off and on again.

Strange thing; when the "check engine light" has illuminated, the car behaves normal. Acceleration is normal from both standstill and using kick down when cruising.

Other observations:

- The car accelerates normally from a standstill
- The car looses power only occasionally when accelerating from cruise speed.

I have done the following:

-Changed air filter and cleaned the O2 sensor
-Changed diesel filter
-Changed oil/filter
-Checked coolant level to be ok. Actually had to refill as it was low.

I have now ordered a device so that I can read the fault codes on the car. Guess I will have it in the mailbox in a few days.

So, to my question. Anyone who can point me in the right direction from this stage?

Thanks

 

[TheDan]

The obd scan tool is a good start. I also would tend to look around the area you worked/had worked last. Maybe there is a less evident connection that got knocked loose or maybe one of the clamps is not tight.

 

[Spike555]

You have a intake air leak and you are loosing turbo boost.
Double check your work. All hose clamps. There are no vacuum lines so nothing to check there.

A turbo charged engine has no power without the turbo. Loose any turbo boost and you will loose power, engine will rev easily with no load with no turbo boost, but as soon as you add a load it will loose all power and be virtually undrivable.

Since the EGR runs off of exhaust, and the exhaust is what spins the turbo, check there. If you are loosing exhaust pressure to the turbo the turbo will spin to slow and not give you enough turbo boost.

This is going to be an easy fix, it is just finding where the leak is coming from.

So, either exhaust leaks BEFORE the turbo or intake air leak AFTER the turbo.
It cold also be a stuck waste gate on the turbo, but not likely since you just replaced the EGR, that is where I would start.

 

[Stian747]

Thank you guys! Will look for loose hoses and clamps. I didn't think in those lines since the loss of power is intermittent.

Can it be the EGR valve being sticky? I did not change the vaøve itself, just the EGR cooler pipe. The job was actually done by Toyota Bergen (Norway).

 

[Stian747]

Comes up with the following codes:

P19
P34
B1628
B2610

Does this make any sense?

 

[Spike555]

Comes up with the following codes:

P19
P34
B1628
B2610

Does this make any sense?

The codes do not make any sense to us because here in the Unisted States we do not have diesel Land Cruisers.
A clogged EGR will not let exhaust back into the intake manifold, I o not know the routing of the EGR piping of your truck. I would think that the dealer would have inspected and tested the EGR because that would have been a easy upsell to complete the job.

Without knowing the EGR pipe routing it is difficult to help. What engine do you have so I can Google it?

 

[Spike555]

1HD-FTE EGR removal

I Googled it and there are two engines for your truck. I found this for EGR blanking for one of the engines.