Verbrauch steigt und steigt, Motorleistung sinkt | Posts 16+

Hey Michi!

What do you think, shouldn't we at least try searching together once?

Get up on the lift, check the exhaust system, inspect the diesel lines, maybe find someone to do a compression test, check the ???fuel injector??? (or similar), etc., etc... That's what colleagues are for.

Have a nice day.

Peter.

Hello again...
I took some measurements yesterday, maybe that will help a little!
Speed Engine MAF (specified) MAF (actual) EGR duty cycle Inj Qty (actual) Fuel Consumption Inj Qty requested
861-945 861-945 240-340 240-340 Apr 84 -2 to +2 -2 to +2 (accelerator)
km/h /min mg/R mg/R % mg/R l/h mg/R

000 0861 315.9 462.2 69.5 7.4 0.7 0
100 2394 542 718.2 69.5 18.4 7 20.6
110 2625 804.7 847.9 34 26 9.6 24.8
121 2877 764.8 847.9 69.5 28.8 12.6 28.6
129 3087 834.6 824.6 4.7 31.2 14.1 31
140 3339 847.9 794.7 4.7 34.8 17 35
151 3591 847.9 774.7 4.7 34.2 18.5 39.2
161 3864 847.9 748.1 4.7 34.2 19.6 38.6

Hello everyone, I think I have solved the problem.

I re-coded the engine control unit (ECU), and during the last diagnostic check, I had to readjust the brake pedal sensor (the error wasn't there before). Now, the fuel consumption is back to normal, at approximately 7.7 liters per 100 kilometers.

I still have a question about the coding.

1Z engine, what coding options are available? I have currently coded it with 00011.

Best regards and thanks again to everyone...

Hello,

mhernach wrote:

Hello everyone, I think I have solved the problem. I re-coded the engine control unit (ECU), and during the last diagnostic check, I had to readjust the brake pedal sensor (the error wasn't there before). Now, the fuel consumption is back to normal, at approximately 7.7 liters per 100 kilometers. ...

Could it be that you have only provided us with the consumption figures shown on your meter?
It would have been nice if that had been written that way.
Because I strongly doubt that the engine control unit (ECU) coding has such a significant impact on the actual fuel consumption.

Best regards, Rainer.

Sorry, I don't have MFA... I calculate it when I fill up the tank...
And I'm currently driving about 1500 kilometers per month...

I haven't changed anything else, I'm just wondering why I had 'STG 12233' as a code... maybe I accidentally changed something myself when I was trying to do something.

Best regards.
Please provide the German text you would like me to translate into English.

Hello,

12233 is the login code for the adaptation channels. Hmm??? Suspicious...

Best regards, Rainer.

Hello again...
I took some measurements yesterday, maybe that will provide some more help!!!

What's making me suspicious now are the air mass values .

'According to the control ratio, the AGR (Abgasrückführung - exhaust gas recirculation) is fully closed at 3000 RPM, but the measured air mass is lower than the desired value.'

It indicates a stuck valve, which could significantly reduce your performance... it's best to check it.

CU Gremlin.

What's making me suspicious now are the air mass values.

Starting at 3000 RPM, the AGR (Abgasrückführung - exhaust gas recirculation) is fully closed according to the control ratio, but...

'The measured air mass is lower than the desired air mass...'

'This indicates a stuck valve, which could potentially cause some problems.'
'The performance is failing... it's better to check it.'


I've installed the AGR valve, so there's a screw in the hose...

SO, SHOULDN'T IT NOT MATTER IF THEY ARE SUPPOSED TO BE STUCK???? OR????

Sure, here's the translation:

'MFG' is an abbreviation for 'Mit freundlichen Grüßen,' which translates to 'Sincerely' or 'Best regards' in English.

... exactly not.

Hi,

'Please take the valve out and check if it's really closed.'
At this opportunity, it is advisable to insert a suitable piece of sheet metal between the flanges.

Regards,

Andy.

I've installed the AGR valve, so there's a screw in the hose...

SO, SHOULDN'T IT NOT MATTER IF THEY ARE SUPPOSED TO BE STUCK???? OR????

MFG

If it's 'partially open' like it is for me, then unfortunately it's not a matter of indifference!

It is better to seal the flange to the exhaust side using a 'metal gasket' , then it will definitely ALWAYS be sealed .

Regards,
Michl.

PS: Darn it - ANDY was faster....

I've installed the AGR valve, so there's a screw in the hose...


Please define that more precisely.

Did you disconnect the hose and seal it with a screw, OR...?
Did you screw a screw (or a piece of threaded rod) into the hose and then reattach the hose to the can for aesthetic reasons?

The latter would be disastrous because it's quite possible that the AGR (automatic exhaust recirculation system) would remain open. A small amount of air will always leak through, which gradually expands the canister. However, this then causes it to jam halfway and no longer close properly, because the air can't quickly re-enter.

Regardless, the part might still not be completely clean, whether it's because dirt is already stuck on it or for some other reason.

CU Gremlin.

Is the clutch slipping by chance? Does the speed increase with the engine speed, or does the engine speed have a "lead" in higher gears ?

Then you would have:
1: Loss of acceleration, especially in higher gears.
2: Increased consumption.
3: No soot.
...

no, the clutch is okay... definitely...

Hello to the community...

I now have 270,000 km on the odometer, and I'm experiencing the same problem again...

My Galaxy 10/96 is already consuming over 10 liters per 100 km again. Then, I drove a distance of about 220 km (Graz to Vienna) with an incline, and that 'piece of junk' car just wouldn't go any further... I just had a test drive recently.

'When I'm driving at around 130 km/h on a straight road, the fuel injection amount is approximately 30-35 mg, which is almost full load... I don't know what else to do. When I go to workshops, almost everyone tells me that I should have a new engine installed, preferably right away.' Nobody can find the error...

I'm slowly but surely getting started on the project of installing a new 2.4L TDI engine in my Golf... (if it's even possible *lol).

I hope you have a wonderful rest of the day.

Best regards, Mike.

Hello,
I just read the entire thread, and now the question arises: could a clogged intake manifold, covered in soot and oil, be the problem (I've read that the EGR valve is stuck, even so)? I think someone wrote something similar a while ago (4-5 weeks), and they also wanted to post photos. Unfortunately, they haven't done it yet, or I might have missed it. I can imagine that the EDC (Electronic Damping Control) could compensate for the Enpaß (presumably a suspension setting), and ultimately make all the values more or less consistent. However, this comes at the cost of performance, and that performance is lacking in the driving characteristics.
Andreas.

hello... thank you for the quick reply...

That would also be a possibility... I only replaced the AGR valve 25,000 km ago.
'Then perhaps this also needs explaining... When I look at the actual boost pressure compared to the target value, I have too high boost pressure up to 3000 rpm, and too low boost pressure above approximately 3000 rpm. But how am I supposed to verschandeln it without removing it? It seems I have no other option than to investigate further.'


Sure, here's the translation:

'MFG' is an abbreviation for 'Mit freundlichen Grüßen,' which translates to 'Sincerely' or 'Best regards' in English.