Failure P0091 Fiat Bravo 1.9 150 HP

[bravosport150]

Guys I have a FIAT BRAVO SPORT 150 HP NO DPF with downpipe.
Let me explain: I made one that is rimappature, a map for my car, was lucky? the map on my car and as soon as you load the map we tested the machine and to the first accelerated deep in 4th gear, and? in engine failure, with fiat ecu scan gave us error on the high pressure pump (P0091), then the mapper I get up a little bit the limiter of the rail from 4% to 5%, the riprovammo and not gave us the most? the error, and then I paid him ? gone via.
Here it is, after just a month ? re-presented, in acceleration I by engine failure, I was going about 120Km/h in sixth gear on the 2100rpm about, I started to accelerate deeply for overtaking and bhammm error and the machine plant is not pushing the pi? as it should, and going to failure....I stop for a few minutes and then allocation should be well again....
The error ? the P0091 - fuel Pressure regulator (Inlet of the high pressure pump).

After a while the ricontattai and I reimpost? the pressure of the rail on the original and then at 1600, I tried the machine again and in third gear sank the accelerator and as soon as you start? to push here come again the engine failure.
Here is the preparer told me that it could depend from the pump, from the high pressure sensor on the pump or from the sensor rail, then armed with patience I bought the sensor rail and the original regulator high pressure on the pump and I have changed both, but guess what....you ? resubmitted the same error.


I contacted a dear friend of mine and he gave me a map that I uploaded but ? repeated the error again.

I have to say that the preparer asked, a little, what? a maximum of 20 or 25Cv and the car I consume less leisurely pace.

Now, I would like to understand from you what could be in reality? a matter of the map, or mechanical?
I'm attaching some of the maps (in addition to the original) that I have loaded and that all I have to the failure. Just today, my friend gave me yet another map (the 6 that you can find in the archive which I enclose) with the section of rail set to the original and told me to try it.

For those who want to view the maps he send me a pm that I'll give you the password for the archive

__________________________________________________ ________________________________________________

Guys finally today I was able to make the diagnosis active, I'm armed with notebook and I was able to bring up the damage, as you can see in the graph, corresponding to each peak of the deal? of diesel oil demand (chart below), the opening of the pressure regulator is lower (chart above), I have surrounded of red where are you ? verified the failure, in fact, as you can see the pressure regulator ? went to zero....in the previous cases, as I told you it was open but did not ? got to zero.
I also noticed that the opening of the pressure regulator does not exceed the 48,92%, but according to you ? normal? The Cio? that regulator should get to 100%, or maximum reaches 50%?

What the hell can? be according to you....is driving me crazy this thing. It is as if when it needs more? diesel or pressure, or how you want to define, the regulator lowers until you get to zero in some cases and let me go the machine in recovery! sad.gif

The other thing I noticed ? that pressure diesel measured exceeds the goal set by the map, the cio? if on the map the maximum pressure should be 1664bar I've seen that the measured till even 1687bar, cos? as you can see in the maximum and minimum values on the left of the image. The limiter in this map? ? set also 1664bar cos? as the maximum pressure, but really? nothing was happening....If for? notice the point where I had the failure, the pressure of the fuel measured ? remained the most? low of the goal....






Guys what and how could I solve it? It would be more? indicated to bring the car to a pompista?
Thanks in advance

[bravosport150]

I has already? answered Tidus elsewhere for? today I ? came this doubt:
and if it was the fault of the injector?

I did these tests with the machine stopped in neutral, the first screen ? made with the engine at a minimum while the second screen with the engine led to about 1650 rpm.

What do you think of those fixes that backs?






To any of you ? success?

[progresso]

hello first of all, in order to remove the doubt if it's a problem of the map do is replace the file ori and then try again if anything goes wrong then the problem and the mechanical/electrical if it was the opposite of the problem lies in the map,and here come into play the guru of the mappings that after I posted the mod file will tell you or advise where the problem lies and how to solve it

[legendaryslave]

you have to make a what to monitor the pressure of the objective and the measured and also low so you can see what is lacking in ps with the map ori the same thing happens

[msport (exil77grande)]

I would like if possible that inserissi files ori and mod without a pass,if you need advice we are here, but with the pass does not make sense.

[bravosport150]

you have to make a what to monitor the pressure of the objective and the measured and also low so you can see what is lacking in ps with the map ori the same thing happens

this is a test I made and you can see in the first picture that I posted above (the one with the graph), where it is reported the pressure of the diesel oil objective and measured, When you press that measured out just over the goal, the cio? in that map the goal was 1664bar and I got to 1687bar, cos? as you will notice to the left of the image, so a little deviation there is, but I think it might be normal right?

[legendaryslave]

this is a test I made and you can see in the first picture that I posted above (the one with the graph), where it is reported the pressure of the diesel oil objective and measured, When you press that measured out just over the goal, the cio? in that map the goal was 1664bar and I got to 1687bar, cos? as you will notice to the left of the image, so a little deviation there is, but I think it might be normal right?

not was good, however, to disassemble the float in the tank and see if ? clogged of dirt you have to exclude a fall in the low monitoring the pressure , once you've established that in the circuit ? everything is ok" eye to the valve on the filter", however, known that in the time skip furi the error missing 300 millibars you are powerless are the internal valves of the pump that can hold more pressure

[blackwolf76]

I ? capitanto several times that those cars do that type of problem, acceleration, maximum and random, or it turns off or goes into protection, then start again like nothing had happened.
In this case the ideal thing to do ? to upload a map ori only luca stanca, now that you have not more?, then try again if the problem reoccurs. If it were to happen again exclude a mapping problem, then you need to revise or replace the high pressure pump, which at the 99% ? the culprit, considering that you have already replaced the pressure regulator (subject to breakage), and you could save yourself the sensor, which does not break almost never.

[bravosport150]

the guys with the map ori, not me ? seemed to have the failure, but again can? be that being the original chiss? what circumstances must be present to permit? to appear the breakdown, boooo
Guys I attach the map files without a password.

What do you think of these corrections on the injectors?

[bravosport150]

ok these days will change? the diesel fuel filter and will prove? the pump in the tank is clean.
You in the time of the failure of a no-pressure, but the strange thing ? that he does not always, in fact if you see the chart in the previous moments, those pressures have reached safely, as ever? Should always do that no-pressure?