EGR off 1.3mjet does it really work?

[Backgroop]

Hi guys I ask you a question that has me intrigued, this morning I made a EGR off on a fiat 500 1.3 mjet 75hp, file ok I write, in the diagnosis of the egr off a percentage of 3%.. so far everything is ok.. then, given that in this car, I removed the intake manifold and the egr valve to clean them, remove the velocity stack inside the manifold by putting a cap on and leave the tube that leads from the valve open, with surprise I noticed that the egr valve still works, in fact, the minimum is to pass the exhaust gas by accelerating closes.. now I wonder cm is at work, and in the diagnosis port, the valve is closed?? But the traditional method work??

[sportknight]

you should always close the egr with the plate,not by error but a minimum opening always remains

[alfetta80]

I honestly do not or never tried it visually to see,anyway from diagnosis to my esperieze remains closed no work that is' giving it a shot of throttle and the percentage of the command remains fixed and the mass of the intake air remains invarita then, in theory, does not move!!

[neo]

Hi,why not post here file hours and mdifficato from you ?

[Backgroop]

Here are the files, EGR excluded perfectly,
I repeat, in the diagnosis EGR off a fixed percentage to 3%..
dismantling the pipe introduction to the manifold I noticed that at least opens as soon as you accelerate it closes

[neo]

I personally delete it manually.Look at the address 084750 ,the value of get and decimal value 47506 / or hexadecimal B992.This address is valid for all the 1.3 mj simply locate the curve.

[alfetta80]

you may find as well that no sheet is opened slightly by the pressure of the exhaust gas and are my assumptions..................

[marcogti]

To make a try you could replace the valve with a resistance so that the diagnosis is detected, and see if it opens or not

[Backgroop]

Guys I know how to exclude the EGR valve manually, or if I put the resistance can I exclude it, etc..
my question, and that the traditional method of the cio? to bring the value to B992 esa, it does not work, in the diagnosis and the door is closed but the EGR valve with the car at idle it works the same, is fed.. any of you ever checked out after the exclusion if the valve was actually excluded?? I will and with regret, I discovered that it works equally.. if today it happens to me some 1.3 mjet I want to do some other test

[sno74]

Try and keep us up to date....
I usually get a small plate between the radiator and the egr cos? I do not exclude that the shots still in the manifold....

[ugoboss]

Guys I know how to exclude the EGR valve manually, or if I put the resistance can I exclude it, etc..
my question, and that the traditional method of the cio? to bring the value to B992 esa, it does not work, in the diagnosis and the door is closed but the EGR valve with the car at idle it works the same, is fed.. any of you ever checked out after the exclusion if the valve was actually excluded?? I will and with regret, I discovered that it works equally.. if today it happens to me some 1.3 mjet I want to do some other test

do a test ,remove the solenoid valve from the body, egr, leaving it attached to the connector, and the machine is in motion to a minimum, and see if it is open and how it works, the pivot of the solenoid valve.

[Backgroop]

do a test ,remove the solenoid valve from the body, egr, leaving it attached to the connector, and the machine is in motion to a minimum, and see if it is open and how it works, the pivot of the solenoid valve.

Gi? tried the valve connector unplugged, it is closed, just makes me ? arrived another 500 in the workshop with problems with the EGR now I try to exclude it to verify the behavior

[ugoboss]

perhaps, then, it is that 3% that does work to a minimum.

[sportknight]

as I said,there remains cmq slightly open...

[baraldino]

with diagniosi to a minimum the mass of the air changes with the connector unplugged?

[Backgroop]

Just finished the tests on a fiat 500 1.3 mjet 75hp, the result in the diagnosis percentage opening egr valve "2%" was the EGR off, the EGR valve remains fully closed, is not controlled at all.. I attach the modified files:

6135

On the other 500 to work around this problem I had to remove the plug and insert a resistance of 36 ohms with a tolerance of 5%..
I do not understand why out in the same way, on one works on the other no..
pu? depend on the software version??

[ugoboss]

may be, on the first you had made other changes besides the egr?

[Backgroop]

may be, on the first you had made other changes besides the egr?

Yes, the exclusion of the DPF, but it does not imply something in the management of the EGR.. I did the test to put the original map only with the exclusion EGR but still the same problem.. and also I checked in my database and this version of the HW and SW I have made so many.. and they do not have ir? had no problems, that is the ecu damaged?'

[megamind]

I do not think that it is the ecu damaged, maybe try with the exclusion also of the dpf if d? the same problem.

[leandro89]

I have noticed that on some cars 1300mjtd I are 0% other 2% other 4%, the values from the diagnosis.

[ugoboss]

surely then it depends a bit of what else in the sw of the control unit, it would be nice to find out what.