Engine: D5244: Throttle body cleaning

[BlueRubber]

I cleaned my throttle body as per this video:
https://www.youtube.com/watch?v=BGxVoGbDK1I

The car had not been driven until a few days after doing this clean.
When driving the car the revs would not drop properly and would sometimes stay too high
See video for example:
https://youtu.be/HDovZiG2uoI

So I removed intake pipe and cleaned the throttle body again, there was still some dirt there.
It's possible the intake pipe at the throttle body end wasn't full sealed at the bottom after the clean
as it's difficult to see, but when I put it back this time it is sealed properly
Did a quick rev test on the driveway and didn't notice any issues
But after driving it again it has the same problem, but not quite as bad as before.

I did a test of the module with the car running that can be seen in the screen shot below:
https://my.pcloud.com/publink/show?c...3yiU80hL5gnCrX

You can see that for most of the test the car wasn't returning to idle and then did right at the end of the test.

I tried to do the self test but my ETM firmware is too old and VIDA wouldn't allow me to do the test without first updating it.

Any suggestions on what I should do next?
I know there are specific throttle body cleaners you can get, but I have heard some damage the coating of the throttle body particularity on Ford cars.
( However I am guessing this is a Volvo rather than Ford engine ? )

[pierremcalpine]

Originally Posted by BlueRubber

I cleaned my throttle body as per this video:
https://www.youtube.com/watch?v=BGxVoGbDK1I

The car had not been driven until a few days after doing this clean.
When driving the car the revs would not drop properly and would sometimes stay too high
See video for example:
https://youtu.be/HDovZiG2uoI

So I removed intake pipe and cleaned the throttle body again, there was still some dirt there.
It's possible the intake pipe at the throttle body end wasn't full sealed at the bottom after the clean
as it's difficult to see, but when I put it back this time it is sealed properly
Did a quick rev test on the driveway and didn't notice any issues
But after driving it again it has the same problem, but not quite as bad as before.

I did a test of the module with the car running that can be seen in the screen shot below:
https://my.pcloud.com/publink/show?c...3yiU80hL5gnCrX

You can see that for most of the test the car wasn't returning to idle and then did right at the end of the test.

I tried to do the self test but my ETM firmware is too old and VIDA wouldn't allow me to do the test without first updating it.

Any suggestions on what I should do next?
I know there are specific throttle body cleaners you can get, but I have heard some damage the coating of the throttle body particularity on Ford cars.
( However I am guessing this is a Volvo rather than Ford engine ? )

Hmmm, I was going to suggest that you run the adaptation in VIDA as a next step. If your ETM is unable to connect to VIDA due to firmware limitations you may be at a dead end.

A few things to consider: 1) are you certain you put the ETM back on in the same orientation? I'm not SURE this makes a difference but it may impact how well the bolts tighten up. 2) did you replace the gasket? 3) make sure the plastic pipe is put back on snuggly 4) turn ignition to position ii and leave it there for 30s as I think the ETM does some self-testing that you can hear over the course of the 30s. 5) once all four bolts are tightened, check each one again.

I had a lot of trouble with mine. I finally gave up and got a replacement from XEMODEX (right across town from me) and all was well. I had the Bosch TB though, not the ETM.

[BlueRubber]

Thanks for the suggestions.

VIDA can connect to the module and read the values, but it due to the older firmware in the module it cannot run the self-test.

I cleaned the throttle body without removing it from the car like it shown in the video.
Although now I am thinking I might have to remove it from the car.

I should point out that the ETM worked fine before I cleaned it and I was just cleaning it as preventative maintenance.
( which I now regret! Haha )

[ThomasG]

ETM adaptation?

Never heard of.. But hey, one learns something every day

My pennyworth:

What engine?

I did mine (petrol) "completely out" way.

That was some years ago, and it runs perfectly ever since.

But I did one thing you don't mention: reset the ECU.

To do that:

Turn off the car.
Wait at least 10 minutes for systems to shut down.
You can use that time to gain access to battery.

After these 10 minutes- disconnect NEGATIVE ONLY

And leave disconnected for at least 30 minutes (what I did was to disconnect battery first, and then take out, clean and fit back the throttle, so I had about 1.5 hrs "no power")

Reconnecting:

Insert the key into ignition and turn to position II.
Make sure that lights switch is set to " dipped beam"(that is- if the battery was connected, lights would be ON)
This is to prevent voltage spikes, and is on the ", rather bl.ody important things" list
Then reconnect the negative.
Wait 10/seconds.
Remove the key.
Cover the battery, put away the tools.
Start the car normal way.
Set radio and clock (radio presets and clock get reset, too)

Go for a ride.

[jgjones095]

What car and engine have you got?

The D5244 label is confusing me as its a diesel engine yet the youtube video links to petrol engine.

If it's petrol I have a similar issue with my xc70 2.4t. Etm.

It revs and idles high or very low and bounces around.

Cleaning the etm helps.
Check for vacumn leaks. The MAF is clean.
The pvc systems is not clocked and the oil level is not hight.
Failing that what year is your car? Could change to contactless sensors.

Like you I've run into a dead end with vida due to my firmware also.

[BlueRubber]

Originally Posted by jgjones095

What car and engine have you got?

The D5244 label is confusing me as its a diesel engine yet the youtube video links to petrol engine.

If it's petrol I have a similar issue with my xc70 2.4t. Etm.

It revs and idles high or very low and bounces around.

Cleaning the etm helps.
Check for vacumn leaks. The MAF is clean.
The pvc systems is not clocked and the oil level is not hight.
Failing that what year is your car? Could change to contactless sensors.

Like you I've run into a dead end with vida due to my firmware also.

Thanks for the replies all.
Vida shows the engine as B5244S
The car is a 2002 v70 2.4 petrol n/a

I will double check the vacuum lines; although I am only aware of the two that come from the manifold on the right hand side and the two that come from the airbox. Are there any more to check?

Also I will do the ECU reset as suggested.
The oil level is correct.
PCV check: I checked that there is slight suction from where the dipstick goes on 7/2/2019 and it sucked the glove in very slightly.
The MAF was cleaned on 13/1/2019

[ThomasG]

Sounds just like the same motor I have..

Which throttle do you have in there?

If I remember correctly, around 2001/2002 Volvo was changing from older magnetti morelli (or something like that) to newer, with contactless sensor.

Is yours a pure right angle aluminum and plastic box or the newer type?


https://www.google.com/imgres?imgurl...MygLegUIARCCAg

[BlueRubber]

I have the magnetti morelli throttle.

The throttle is working better than it was but still not returning to idle correctly.
It never idles low, if there is a problem is idles high.

[ThomasG]

Right..

I can't say I have experience with these.. Mine is Bosch one..
But out of what I learned when I was finding out why mine was idling rough (cleaning helped):

Magnettis have actual physical position sensor.
That wears down with time.

Its only a guess..

If you have Vida and dice, maybe you would be able to take live reading of throttle position vs RPM?

What I'd be looking for is where it say that throttle is on low (idling) opening and yet revolutions stay high.

Other than that- whatever happens, it seems a right time that you develop a sudden interest in the topic if changing that sensor to contactless.. If not needed now, it will be in nearest future.

Unless, of course, you don't intend to keep the car. Rare, but possible

I'm afraid that's all I can add to this thread. As I said- I don't have experience with these.

[BlueRubber]

Thanks Thomas.

I am going to run the checks / ECU reset previously mentioned.

If those don’t help I will try removing the ETM and cleaning it with throttle body cleaner from the local motor factors.
I have looked up the procedure in VIDA to replace the ETM so will follow this to remove and clean it.
Although for some reason it says to remove the starter motor which doesn’t seem necessary.

Will also do some googling regarding changing to a contactless sensor!

Forgot to add:
I did a test of the module with the car running that can be seen in the screen shot below:
https://my.pcloud.com/publink/show?c...3yiU80hL5gnCrX
You can see the issue in the graph