IQ that does not increase on the Fiat 1.9 JTD Edc15c5

[biondo83]

I had a bit of time and this weekend I got to play with the family car (Fiat Multipla 1.9 JTD 105cv edc15c5).
I set myself the goal of wanting to inject IQ = 79mm^3 of fuel by changing the only 3 maps are related to each other, and that they should act on the IQ: map the pedal, smoke limiter and torque limiter. The values read in decimal, multiplied by 0.01 and should return the mm^3.
From diagnosis, to?, the quantity? total diesel ? always around 55-56 mg/i which should correspond to approximately 0.85*55=65mm^3
Also by decreasing/increasing values of the 3 maps, the amount? total diesel ? always 55-56 mg/i.
I tried to scroll in the map, but I have found none of the limiters IQ that characterize the edc15c7.

I have lost something that blocks the IQ?


The original file ? been included in the database, the time is:N?#8


Thanks

[Gia]

The url 07b272 (after the map the pedal) should be a limiter iq for? ? set to 66mm3 so there must be some other

[biondo83]

The url 07b272 (after the map the pedal) should be a limiter iq for? ? set to 66mm3 so there must be some other

Thank you for the intervention? the map serves only to facilitate the ignition at low temperatures.

[Gia]

I thought that was a limiter based on the temp. Have you Already tried to mod? Serving 66mm3 in the starter?...,. C should be a limiter according to the press turbo

[biondo83]

I thought that was a limiter based on the temp. Have you Already tried to mod? Serving 66mm3 in the starter?...,. C should be a limiter according to the press turbo

If you make the case to the number of turns, goes from 0 to 750 rpm and the temperature diesel are negative then ? the equivalent of the map of the TDI engines that have cold start problems. At least this ? there? I have deduced by reading the values in 2D.

We accept suggestions and guesses what? as soon as I can do the test

Although it is a ecu very old it seems more? difficult than expected

[kingsnake]

If you make the case to the number of turns, goes from 0 to 750 rpm and the temperature diesel are negative then ? the equivalent of the map of the TDI engines that have cold start problems. At least this ? there? I have deduced by reading the values in 2D.

We accept suggestions and guesses what? as soon as I can do the test

Although it is a ecu very old it seems more? difficult than expected

The TDI have problems starting hot

May I know the hardware and software of the ecu?

Will update on the last test:

- editing a map 7BC22 has not resulted in any increase in the IQ;
- changing the map 7BC5E has allowed me to inject between 70 and 75 mm^3 in the range of 2100 and 2400 rpm. Above 2400 rpm the IQ ? always been less than 70 mm^3.

It would seem that the block of IQ was imposed by the map 7BC5E.

The values "air Mass measured" and "air Mass, objective," are measured from the MAP or MAF?
I tried to unplug the MAF and the values in the diagnosis of "air Mass measured" and "Mass air objective" vary the same way in which the plug was connected. There? what changes ? only the temperature reading of that goes to 40?C (=> Air Temperature IN/C = 4,75 Volts) and the "Mass Air/C" goes from 2.1 Volts to 0 Volts, finally, the opening of the EGR valve goes to 1% (always with the MAF disconnected), and the state ? "Not Active".

Then, the MAF only provides the reference temperature (in tension) and air mass (in tension)?
Disable the MAF from the map, what would that mean in terms of the values and errors in diagnosis?

May I know the hardware and software of the ecu?

[biondo83]

Also this weekend I made several tests: modified some panettone in the map with decimal values "2500-3000-4000-5500" but with a negative result. The IQ ? remained unchanged

Any advice?

[SandroMarciano]

You say here that it seems to me the most? appropriate.

The diagnosis is wrong with the unit? measurement, she always did, 55-56 are mm^3/non-mg/i.
You'll probably ? missed a limiter of fuel f(T_water), if I remember correctly, 8x1, but don't expect to go much further, this motor is provided with injectors very small...

[biondo83]

You say here that it seems to me the most? appropriate.

The diagnosis is wrong with the unit? measurement, she always did, 55-56 are mm^3/non-mg/i.
You'll probably ? missed a limiter of fuel f(T_water), if I remember correctly, 8x1, but don't expect to go much further, this motor is provided with injectors very small...

Are you referring to the limiter diesel at address 7BC5E?

[cicciogsr]

You say here that it seems to me the most? appropriate.

The diagnosis is wrong with the unit? measurement, she always did, 55-56 are mm^3/non-mg/i.
You'll probably ? missed a limiter of fuel f(T_water), if I remember correctly, 8x1, but don't expect to go much further, this motor is provided with injectors very small...

I agree if you don't unlock everything does not open completely the diesel ori should inject about 50 exceeded 68 starts to smoke if you do not raise the pressure.