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Limp Mode - New owner

Never owned a HDI before, I used to have an XUD a long long time ago so the HDI is a bit witchcrafty for me!

I have a new buy that is stuck in limp mode. Have searched around the web but cant really find a similar issue or symptoms as mine. will start with the basics:

Car starts no issues
wont rev past 2300 (limp mode)
Runs fine otherwise - drove it 35minutes home no cutting out or hesitation
No black smoke at all

So, I haven't got PP2000 so I will probably use a generic scanner at the weekend, but the previous owner said low fuel pressure and the injector was dropping to a 0 reading when he had it plugged in. Is he right in suggesting injectors or could it be the high pressure pump?

Im told it has had new fuel pressure senors and valves and a new filter and I can see new things and piping under the bonnet so maybe he is right!

Any help would be great Smile
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best to try a filetr the check the in tank pump also not meny use the form any more so check face book
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(07-07-2019, 07:57 PM)Madmadmax Wrote: melhor para tentar um filetr a verificação na bomba do tanque também não meny usar o formulário mais então verifique o livro de rosto

try check MAF.

if the RPM stop in 2xxx rpm usually its because the MAF.
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im back with more info if some of the veteran 306 people don't mind looking. I have posted on the facebook group too and have some lines of investigation.

Code p0190 being thrown for Fuel pressure sensor circuit (using my china reader).

I pulled lift pump and that's clean, as is the tank. Pulled filter, that's clean and replaced anyway. Car starts on the button and will drive just in limp mode. Next up I went for the sensor plug (red one) and using the battery as ground and ignition on checked the three pins:

Pin 1 (green wire) - 0v
Pin 2 (white wire) - 1.3v
Pin 3 (Pink Wire) - 9.5v

From google and these forums etc Pin 1 looks to be ground, pin 2 is signal and pin 3 is feed, but 2 and 3 should be 0.5 and 5v respectively. I checked the readings at the famous yellow plug and they are the same.

Im not stuck as to what to check, im going to try and find the pins in the ecu for the above three wires to check continuity and breaks.

Any ideas on what is causing this at all?
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