Testing the Maf sensor? With 1.9 dci MK1 picturesque

[tariqreedzx]

The scenic van I own is an MK1 1.9 diesel.
My power went off unexpectedly, and my cat just started flashing an electrical problem signal on the dashboard.


I have cleaned the filthy MAF with the appropriate cleaner, and now there is no dash light. However, on a 20-meter run in both directions, it does go into lack of power once, but now there is no dash error. I turned the ignition off and then back on, and it worked.

Evaluate the MAF.
While the engine is running, disconnect the MAF electricity plug. The result engine is active.
Is the maf defective as a result of that?

The EGR has been cleaned.

I have not yet changed the EGR valve. Another one is mine.

[lucas_perryj]

Do not turn off the engine as this resets all temporary faults. Instead, keep the engine running and connect an OBD2 scanner that speaks Renault (check my signature for the cheapest Ap200). This will allow you to read faults while the engine is running. Either an injection ecu scan or a full scan with post code will do the trick. Renaults have a strange quirk like this.

Like you, I was driving enthusiastically for around 20 miles until my Mk.2 1.9DCI Scenic went into limp mode a few of times. The problem was sticky vanes in the turbo, caused by the heat. I'm still not sure if it was the Mk.1 is the Garret variable valve timing (VVT) turbo, however you'll also see this on many Volkswagens, skodas, and other vehicles with similar VVT turbos.


However, codes are necessary in order to scan for overboost codes, which cause sticky vanes in turbo.

[tariqreedzx]

My device is an Autel ap200.
Whenever I've used it, I've had the radio and the ignition turned on. Nothing wrong with it.
BUT

I get it since you're suggesting a whole engine.

What I have accomplished thus far is:
using the appropriate cleaning, cleaned maf
Problem improved, however vehicle entered limp mode without dash error.
An EGR valve replacement has recently taken place.
My car starts up without any problems, but I haven't tried it yet.

For some reason, the site now requires cookies, so I'll have to figure out how to accomplish that on a mobile device before I can attempt to attach a photo of the error codes. It was effective, but it was frustrating.

[tariqreedzx]

With the new EGR valve installed, I want to go for a run with the car today. I assume it's a new MAF sensor if it doesn't work, because I just cleaned it.

I will provide an update after the driving test, but in the meanwhile, if anyone has any suggestions for improving my scripts, I would definitely appreciate it.

[tariqreedzx]

Recent Development:

Fresh EGR valve installed, MAF sensor cleaned with the appropriate cleaner



This is the first time the engine has ran without any problems.
Had no problems throughout the brief 5-meter run. (However, I had issues prior to the EGR valve installation, which was accompanied by a lengthy run of twenty meters or more on the highway.)

So:
I shall go for a lengthy run whenever I am able to.

Without a doubt, this was the problem.
On the other hand, it could just be a fading maf sensor; in that case, I'll try disconnecting the connector and driving to see if it helps. Until I cleaned it, it was filthy. And

[tariqreedzx]

Recent Development:
Keep running with the same status.


replaced EGR, cleaned MAF


I was disappointed to see that it began losing power again and provided the same error message of an electrical problem.
I disengaged the MAF connector and proceeded to return to the location without it.

Everything went smoothly.
I'm sure it's wrong, so I got a Bosch maf to check it out.
It no longer says EGR on my fault error item; instead, it looks like the attached file. As strange as it seems, this happens when the MAF is not attached.