Clio 1.5 dci non start df127 2000bar fuel rail

[clio2004 1.5 dci 82 ks]

Okay guys, car cut down on the motorway not starting since. So far CLIP showed df127 supply voltage sensor, fault is stored. And it measured 2000bar in fuel rail. So far 4 injectors were replaced. Egr valve, ecu. Im desperate for solution, if anyone has any idea, please share it with me. Thanks in advance
It’s clio 1.5 dci 2004 60kw 82hp mk2

 

[NorthloopCup]

Have you checked that you’re getting voltage to the pressure sensor? The 2000bar may just be a default value the ecu sees when the sensor loses voltage/has a fault.

 

[clio2004 1.5 dci 82 ks]

Yeah, voltage is normal.

 

[clio2004 1.5 dci 82 ks]

Any more ideas?

Yeah, voltage is normal.

 

[NorthloopCup]

Yeah, voltage is normal.

What was the voltage you measured?

 

[Crayola]

Have you checked for sufficient pressure at the injectors by cracking the lines?

And have you drained the fuel filter to check for brass filings? You've thrown 4 injectors in a car without checking the main cause of these engines being crap😬 Chances are if the fuel pump is shagged then so are those injectors

 

[clio2004 1.5 dci 82 ks]

No, fuel was drained everything was flushed and pump refubrished before throwing injectors in. I just can’t find anything on df127 supply voltage sensor…

 

[clio2004 1.5 dci 82 ks]

No, fuel was drained everything was flushed and pump refubrished before throwing injectors in. I just can’t find anything on df127 supply voltage sensor…

Fuel tank was drained, with filter changed. That’s what i mean

 

[Crayola]

Okay good lol

Have you cleaned the strainer on the fuel pressure sensor?

 

[clio2004 1.5 dci 82 ks]

Fuel pressure sensor was replaced…

 

[clio2004 1.5 dci 82 ks]

Have you checked that you’re getting voltage to the pressure sensor? The 2000bar may just be a default value the ecu sees when the sensor loses voltage/has a fault.

3.5v

 

[Crayola]

You need 5v for that sensor, it's on the same circuit as the EGR iirc. Check for any breaks in the wires

It's pretty common for them to break near the glowplug wiring across the front of the engine

 

[clio2004 1.5 dci 82 ks]

I know a lot of things to do on cars, but tracking a broken wire is not a thing for me… i honestly think that’s the problem in 5v supply from ecu. But im going crazy. Car started losing power wouldn’t go above 2k rpm and then 3 days after cutting out.

 

[clio2004 1.5 dci 82 ks]

I know a lot of things to do on cars, but tracking a broken wire is not a thing for me… i honestly think that’s the problem in 5v supply from ecu. But im going crazy. Car started losing power wouldn’t go above 2k rpm, and 3 days after the car cut off. would continuity test show if wire is broken?

 

[NorthloopCup]

3.5v

Does it get 5v if you unplug it? You also need to trace the supply back to the ecu and measure the output there.

A break in a wire would indicate 0v, so this sounds more like a resistance in the supply voltage if you still see 3.5v with the sensor unplugged.

Measure again and report back. There’s some other sensors that are all on the same 5v supply from the ecu, so it really won’t be that difficult to find the issue.

 

[clio2004 1.5 dci 82 ks]

Does it get 5v if you unplug it? You also need to trace the supply back to the ecu and measure the output there.

A break in a wire would indicate 0v, so this sounds more like a resistance in the supply voltage if you still see 3.5v with the sensor unplugged.

Measure again and report back. There’s some other sensors that are all on the same 5v supply from the ecu, so it really won’t be that difficult to find the issue.

It’s night here, so ill see that tomorrow and will report u the results.