sudden shutdowns alfa 156 1.9 JTD 115hp

[giary74]

dear friends,
yesterday evening, my young 156 with 180,000 Miles, I made a joke don't like.
In the middle of a roundabout ? off of the shot. After 2 attempts to start, yes ? off the malfunction indicator light engine and ? allocated then it turns off again after 500 metres, at the next roundabout.
Broken, I did make about eighty Miles for me to go back home without other whims.
In the diagnosis multiecuscan has detected 2 errors:
P1671 - Fuel pressure regulator;
P0191 - Diesel pressure control.

My friend mechanic told me that, ? to replace the pump immersed in the tank, since? the malfunction of the sensor in it (P1671), would give rise to the second error.

To someone ? gi? success?

[megamind]

Look, I have another car but I can tell you that the shutdowns imrovvisi can safely depend on the pressure regulator that is not v

[giary74]

Look, I have another car but I can tell you that the shutdowns imrovvisi can safely depend on the pressure regulator that is not v?.

thanks for the quick response, but this regulator ? an integral part of the pump immersed in the tank, or on the rail of the Rail?

[Backgroop]

I would recommend you remove the fuel pump and check the fishing if clogged then clean it in the pump immersed not c'? no sensor parts from the tank to check if there are impurities?, then to the filter and high pressure pump disassemble the regulator and clean it if dirty.. checked the pressures with a gauge, sometimes the problem is in the fuel oil dirt

[giary74]

ok, let? as I have suggested.
And' likely that you have ever done diesel dirty. It was happened to my wife several years ago with an old point type. It was turned off and did not want to pi? starting afresh. The fuel pump in the tank it was full of wax!!! And' enough to clean it and ? all went well.
But the pressure regulator diesel ? what you find in the flute of the rail, just below the sensor of the turbo?

[Backgroop]

the pressure regulator or the DRV is mounted on the high pressure pump with two torx screws, one on the rail or the flute ? the pressure sensor diesel

[nasone147]

I Backgroop!the controller, you can verify the operation with fes/mes,but I doubt he will be the guilty one.check with a pressure gauge the pressure low,you need to have at least 3bar,if I remember correctly!any experienced user can? confirm and/or correct?thanks

[giary74]

I have already? done all tests with multiecuscan and all have given me a positive outcome!
Tomorrow I'm going to retrieve a pump low pressure, and then I'll know.
Thanks to all

[nasone147]

Check it out first with a pressure gauge! Why? the risk of spending money unnecessarily! !

[biondo83]

Sometimes it happens that the wheel cylinder pressure regulator blocks. Try not harmful and does not cost you anything verification.
You should turn with active diagnosis and check the opening in % of the control.

[giary74]

Sometimes it happens that the wheel cylinder pressure regulator blocks. Try not harmful and does not cost you anything verification.
You should turn with active diagnosis and check the opening in % of the control.

If it can be useful as a clue, I have observed that on the occasion of shutdowns there was also an alteration of the scheme of minimal barely touched the accelerator

[ugoboss]

quoto friends for the draught of the vessel and ventualmente the regulator is malfunctioning (that, of course, on the high pressure pump is not the one in the tank....that does not exist) but I'll also give you a question since I have not found a brief in your explanation, how much naphtha had in the tank.

[giary74]

today I realized that the tank will only arrive the power to the pump and the contacts of the float :)

When you ? the problem the first time, I had more? half a tank.
This morning I location 16 km of road and urban/extra-urban monitoring with the ELM, the pressure regulator and the sensor...
the machine ? behaved very well (doesn't it ? off) and the value it has had a swing from 1% to 27%; however, shortly after the party I saw that for a moment he had a negative value (if I'm not mistaken -5%). It's normal cos

[biondo83]

today I realized that the tank will only arrive the power to the pump and the contacts of the float :)

When you ? the problem the first time, I had more? half a tank.
This morning I location 16 km of road and urban/extra-urban monitoring with the ELM, the pressure regulator and the sensor...
the machine ? behaved very well (doesn't it ? off) and the value it has had a swing from 1% to 27%; however, shortly after the party I saw that for a moment he had a negative value (if I'm not mistaken -5%). It's normal cos??

I just made a diagnosis (with the car in motion in the regime urban/extra) and negative values are not read. I hope I can help you with this feedback:

Opening pressure regulator
%
16,34
23,13
34,71
68,12
19,23
46,78
16,34
15,24
16,19
21,07
17,01
16,16
16,66
27,74

[Backgroop]

I just made a diagnosis (with the car in motion in the regime urban/extra) and negative values are not read. I hope I can help you with this feedback:

Opening pressure regulator
%
16,34
23,13
34,71
68,12
19,23
46,78
16,34
15,24
16,19
21,07
17,01
16,16
16,66
27,74

I would recommend you take it apart without doing tests, etc., by checking visually and with pressure gauge

[biondo83]

I would recommend you take it apart without doing tests, etc., by checking visually and with pressure gauge

Perhaps you have mistaken the user giary with me. :-P
I've only made a diagnosis, to help the user giary cos? confirm that negative values do not there are.

[crteam]

I would recommend you remove the fuel pump and check the fishing if clogged then clean it in the pump immersed not c'? no sensor parts from the tank to check if there are impurities?, then to the filter and high pressure pump disassemble the regulator and clean it if dirty.. checked the pressures with a gauge, sometimes the problem is in the fuel oil dirt
I Backgroop often sio creates a patina that does remain open on the washer and turn the empty

check the pump behind the full open it and check the red rubber filling the basket

[giary74]

I just made a diagnosis (with the car in motion in the regime urban/extra) and negative values are not read. I hope I can help you with this feedback:

Opening pressure regulator
%
16,34
23,13
34,71
68,12
19,23
46,78
16,34
15,24
16,19
21,07
17,01
16,16
16,66
27,74

in fact... I would imagine that the negative value was not your normal...
Just for curiosity?, have you used multiecuscan with the ELM 327?
You set the numeric display or graphics?
I do this question why? I noticed the negative value with the detection numerical, before that was to the graphics (I started recently).
Then I it seems to me that the graph would contain negative signs...

[Alfiuccio]

I support the answers of all my colleagues, and I add my opinion....*****and you already said check the pressure pump and low pressure (2.5 bar) even if you wrapped it lacks the scope.....and then I don't want to exclude the injector maybe between the 4 someone nn does its job.....a client of mine complained of various shutdowns in march and after several checks it was the injector that was leaking pressure.....the car after shutdown immediately restarts?

[giary74]

I support the answers of all my colleagues, and I add my opinion....*****and you already said check the pressure pump and low pressure (2.5 bar) even if you wrapped it lacks the scope.....and then I don't want to exclude the injector maybe between the 4 someone nn does its job.....a client of mine complained of various shutdowns in march and after several checks it was the injector that was leaking pressure.....the car after shutdown immediately restarts?

Well, let's say of you. On the first start attempt is still on, the malfunction indicator light engine, while the second starts again and goes on as if nothing had happened.

I hope that's not the injectors, otherwise sell it!!!!

[biondo83]

in fact... I would imagine that the negative value was not your normal...
Just for curiosity?, have you used multiecuscan with the ELM 327?
You set the numeric display or graphics?
I do this question why? I noticed the negative value with the detection numerical, before that was to the graphics (I started recently).
Then I it seems to me that the graph would contain negative signs...

Yes, I confirm the interface and tools.
I used the mode? graphic log on the excel file.

[Alfiuccio]

sell the car for the injectors? from nn I think this is the case:)....rather, because' nn controls if it loses injector?

[giary74]

Yesterday I made a section of the pump, and I found a lot of pebbles deposited at the base of the filter. The red seal seems that closes well. I avicinato to the High Celestial Spheres to replace only the pump-house, but I made it. Now reassemble all the parts and I'll know.

[Alfiuccio]

have you changed the pump low pressure?

[ugoboss]

Yesterday I made a section of the pump, and I found a lot of pebbles deposited at the base of the filter. The red seal seems that closes well. I avicinato to the High Celestial Spheres to replace only the pump-house, but I made it. Now reassemble all the parts and I'll know.

I do not think that there is a need to be closer to the celestial spheres to replace the pump in the tank of a 156, I hope that was a joke :-)

[giary74]

* ugoboss
The replacement of the single internal pump not ? that was hard, but, I am not ashamed to say it, ? was quite laborious for me I'm not a mechanic and I did it for the first time. It was a bit fiddly to detach the inner tube of the discharge (that plastic); I warmed up with a hair dryer and then when I returned, I tightened with a clamp screw steel.

However, after changing the pump, clean the tank and filter of the diesel, the problem ? re-presented.
Then I removed the sensor pressure regulator rail (the one that is secured with two torx), and I've blown well with compressed air.
Done to us?, the machine ? the game regularly and seems fine... question: ? the case to change it?

[Backgroop]

* ugoboss
The replacement of the single internal pump not ? that was hard, but, I am not ashamed to say it, ? was quite laborious for me I'm not a mechanic and I did it for the first time. It was a bit fiddly to detach the inner tube of the discharge (that plastic); I warmed up with a hair dryer and then when I returned, I tightened with a clamp screw steel.

However, after changing the pump, clean the tank and filter of the diesel, the problem ? re-presented.
Then I removed the sensor pressure regulator rail (the one that is secured with two torx), and I've blown well with compressed air.
Done to us?, the machine ? the game regularly and seems fine... question: ? the case to change it?

Maybe you do not know, but on the tip of the pressure regulator DRV that have disassembled c'? a micro-filter that is blocking cn the dirt present in the oil, most of the time you just need to clean it as you did, however, have to be replaced, I would recommend you also do a dry pump and the injectors with some special additive as tunap or liqui moly, I use the latter very effective does wonders

[giary74]

[fuorigiri12000]

To me ? success the same problem in the two cars is similar, in the first was the submersible pump, in the second the problem was in the connection piping of the pump.

[biondo83]

Are you testing the machine? How does it behave?

[giary74]

Are you testing the machine? How does it behave?

truly the road test ? duration of ten kilometers, and there were no abnormalities.
After you have replaced the pump, cleaned the tank and the diesel fuel filter, the car ? demonstrated even more? unstable... almost died in the continuation and had the least quite low and irregular.
Cleaning the regulator, instead, the minimum is ? standard delivery ? become a pi? linear and above all, don't you ? off ir? n? from a standstill, nor on the gear.
I would not claim victory, but the problem seems to be solved. We update, good night all!

[crteam]

change the high pressure pump and solve the problem

[giary74]

change the high pressure pump and solve the problem

But you know that if I change the machine I do first and better?;)

As I have already? said before, after you have cleaned the sensor, the machine ? like new again, on the contrary, it seems that it is even more? adjust in the provision, therefore, I think that the failure is resolved.
Thanks to all the friends of the forum who have contributed to the resolution of the problem.:):):)

[fabio1207]

But you know that if I change the machine I do first and better?;)

As I have already? said before, after you have cleaned the sensor, the machine ? like new again, on the contrary, it seems that it is even more? adjust in the provision, therefore, I think that the failure is resolved.
Thanks to all the friends of the forum who have contributed to the resolution of the problem.:):):)
Try to fill the filter with an additive to clean the injectors ,not in the tank but directly in the filter, I use the wizz, and then put in motion the machinery ? spin it to a minimum for 4 or 5 minutes it seems miraculous hello.

[giary74]

Good to know. With this discussion, I found out that there are fantastic products. Thanks