Wont start when warm! (mk1)

jhitchcock · 2021-07-31 23:39:07

Hello All,

I have a Peugeot Expert 2.0 Hdi Van, 2002.
Won't start when warm. everything else seems fine, Starts cold, and drives normal until stop, then can't restart.. it just turns over, occasionally firing but never quite starting. Always starts when cold (Say I leave it for 1-2hours)

Firstly,I had a mechanic plug in diagnostics and Got diagnostics codes (Cleared and these keep coming back) and here's what he said they meant.

p00c8 - Fuel pressure regulator control solenoid - open circuit
p00cc - Fuel quantity adjuster - circuit low

He advised to change the fuel pressure regulator on the pump. changed it this morning with one from scrapyard, same fault remains, and also uneven revving after doing that, a kind of 'pulsing' in revs. (Worth noting engine just turns when this is disconnected, doesn't even almost start. So something must be coming from it) I replaced it with the old one again.

Next I suspected that there was not enough fuel pressure due to excessive leak-off, so I did a leakoff test. I couldn't start it while warm obviously, but I cranked it through 2 full batteries for a few minutes, and all bottles were an equal leak-off so I've ruled that out for now.

so far.. I'm about 200 quid down on diagnosis, scrap parts and tools and still can't start it!

Any Ideas?

P.s. I'm not experienced with this, I'm doing it myself because no mechanics are available and I'm supposed to be going on Holiday in the vehicle on Tuesday!

My next steps are to maybe replace the starter motor (I feel like cranking seems a little slow and underpowered even with a full battery) And replace the crank and cam sensor.

Pathfinder100 · 2021-08-02 02:47:54

Do you have access to Lexia/Diagbox or a decent OBD scanner? If you do, plug it in, start it up, and check out everything in detail before you start buying more parts.

So it turns over, but doesn't start? Is something causing a fuel cut off system to jam? I read somewhere about a problem with a cut off sensor on these engines that sometimes jams. No idea where.

I don't think its the starter motor since it starts from cold. if it was the starter motor it would be sporadic all the time and not start easily when cold.

Failing everything else, you could (assuming you are holidaying in the UK) drive to your holiday destination in one run without stopping. Or if you need to stop, do it somewhere you can stay for a couple of hours like a supermarket and go grab a coffee while you wait for it to cool down.

Some reading (which you probably already looked at, but might give you some ideas.

https://www.406oc.co.uk/viewtopic.php?t=2449
https://www.fiatforum.com/scudo/322556- … p00cc.html

Client: He wrote 6 years ago.
Hello Eduardo I am Teo that of the Socudo good I tell you, the other day after all perfect, it started well, I got a turn and well, I travel about 100km and of wonder, well because it was my surprise I'm going to catch it up Next and I give to the contact and the engine rotates very well, but it does not end up starting. For the exhaust tube there is no signs of combustion, I have connected the scanner delhpi and it tells me, FAARY CODE P00CCIRCUIT OPEN FOOD CONTROL of the electrovalvula of the fuel pressure regulator, and P00CC Faucet Code Low power control circuit of the fuel volume regulator, Eduardo I have to do now I have crazy I do not know if I send it to scrapping thanks
Mec.eduardo-Fiat.
Expert: Mec.eduary-Fiat wrote 6 years ago.
I think this remains deficiency in the wiring of the motor management system, in this case in the pressure regulator wiring that goes on the high pressure pump, in the original question has one of my answers about the regulator with images of The position and way of testing it:
image 1
Image 2.
Image 3.
Form your own question about Fiat
Client: He wrote 6 years ago.
Thank Eduardo is what I wanted to comment on my switchboard does not have the numbers like that it has from 1 to 28, from 29 to 55, from 56 to 88 and has three rows alone, instead of having four, and for telling you that the pin 35 is free my switchboard is a bosch I do not know if you are worth this documentation thanks
Mec.eduardo-Fiat.
Expert: Mec.eduary-Fiat wrote 6 years ago.
OK, then this is the arrangement and the pins you should control for the PREGRAPHIC REGULATOR
Pins image
Form your own question about Fiat
Client: He wrote 6 years ago.
Thanks Eduardo I check it and I'll tell you something

https://www.clubxantia.com/comunidad/threads/9950/

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The car apparently works well, and does not turn on the motor failure light. I discovered it by chance once it gave me to connect the computer via ELM327 (I do not have a lexia). The question is that if he lately noticed as the engine seems much more scandalous to the Ralenti. Those two errors are
P00CC Fuel Quantity Regulator - Low Sign
P00C8 Solenoid Control Pressure Regulator - Open Circuit
I have meant that the failure has to do with the fuel pressure sensor. I have seen that in the forum there is a reference to the subject. But my surprise is that the one that in theory had to be the fuel pressure sensor according to this post. https://www.clubxantia.com/Comunidad/threads/252/ It should be this one like a spark plug, screwed. But my car is 99 and in the place of that goes another that I do not know if that sensor is and I do not know the reference. You believe that this one that appears in the photo can be the one who is giving me problems?
Whats-app-image-2021-07-27-AT-12-11-48-1.jpg

Whats-app-image-2021-07-27-AT-12-11-48-2.jpg
BX19TrdTurbo.
BX19TrdTurbo.
Registered user
Registered
Aug 18, 2014.
Messages
15.022.
Location
Zona Alt Empordà.
Type of motor
2.0 HDI 110CV.
Body type
X2 Berlina (98/01)
Type of suspension
Active, 10 spheres
Tuesday at 3:13 p.m.
#2
The AC high pressure sensor mounted in the center of the ramp but down the sensor of the photo with two cables in red connector is fuel temperature.
But the sensor will sing lack of pressure or take off signal if there is low pressure, if there is another defect of the high pressure regulator first would have to look at it.
Either some injector does not work fine and do not close well, that causes high pressure and can also cause those failures.
Gasoil can be addidame with pure acetone (2ml per liter of diesel) or with a cleaning machine and give joy to the engine to see if it happens.
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vaz2121 · 2021-08-02 12:29:00

You said leak off bottles were fairly equal but how quickly did they fill bottles is also noteworthy and although my experience with HDI is not good or vast a strong starter motor [whatever that may be] seems to be required ...........

Also wiring conectors can throw up WTF type issues [cruddy connectors and high resistance wires inc as they age can be an issue]...........

Sorry not it's particularly helpfull or what or you want to hear ............................

Take heart at least it starts and runs from cold ...............

Casper · 2021-08-02 22:19:01

I have a Volvo V50 here what was always conking out or not starting when worm/hot. OBD was telling me fuel pressure as obviously it was not getting much. Lots of head scratching what had me thinking one night about sensors and what one will kill and engine. Crank case sensor. My thought was the rest would make it run like crap rather than kill it. Out i went for a drive till it died and a bottle of cold water splashed over sensor it started. 30 quid later the Volvo has been great since. Not saying this is your issue but low fuel pressure reading can mean something else.

cliffo · 2021-08-03 09:35:05

I did a quick search in the forum for 'warm' and there a few posts about warm starting issues - this thread may be interesting:

https://dispatchexpertscudo.org.uk/foru … php?id=761

And a lot of items point to the stop solenoid not behaving itself

jhitchcock · 2021-08-03 09:49:44

Hey all, thanks for the replies..

@pathfinder I did consider the driving without stopping, but just my luck I would stall in the middle of a huge junction or something!
@vaz2121 They filled pretty slowly, so I ruled it out somewhat
@casper I ordered a crank sensor, I think I'll keep it handy, or even fit it as a precaution, cant harm!
@cliffo had a look at that, its so great that people always seem to come back to post the resolution.. so i'm doing the same!

Quick update!

After being let down by another mechanic, and a 'diagnostic technician'.. who killed my starter motor cranking the car for 2-3 minutes at a time apparently.. I decided to have a go myself at it.

I replaced the starter motor, and it starts like a dream now.

Now I think back, its never cranked as fast as this, and always been slow starting, and I remember seeing some smoke from the starter at times. As I was changing it, I also noticed the heat shield was missing from under the starter.

Now, I'm not sure wether the new starter has masked the issue (By achieving a high pressure easier) or it was actually the cause (Hot engine heats up the starter a bit, binding it more and slowing it down.. which was certainly happening, was cranking slower when hot) But, at least now I'll get on holiday, and can maybe get it checked out more when I'm back.

My first starter motor change, Im proud of myself! (Will fit a heatshield somtime too!)

(Also a Crank sensor, cam sensor and fuel pressure regulator just turned up in the post haha)

tee_cee · 2021-08-03 14:34:50

Well done. I guess you are on your holiday now, just in time.

Pathfinder100 · 2021-08-03 21:26:03

A fix is a fix, regardless of how you get there.

Those other parts that arrived, I would consider putting them in at some point, but not until after your holiday.

vaz2121 · 2021-08-04 10:20:31

I did a leak test on my HDI [car] and at least one injector filled bottle very quickly ... I was lucky I'm told I found a secondhand replacement for said injector... noisy but did the job...............
Apparently HDI's need a good strong healthy starter to be able to raise the fuel pressure up to something like 300 bar+ before they'll trigger and fire fuel into cylinder............

Hence my random hot or cold start problems with leaky injector{s} it would on occasion never attain minimum pressure to fire fuel in .......................
Some easystart worked for a bit but only till it could no longer raise things enough ... This among other issues brought about it's demise ............

Long way for a short cut and worry, but at least your sorted now ... Excellent ..............

As said many times "A Diesel needs 3 things to run but put a computor in charge it needs 103 things" ..........

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#1 2021-07-31 23:39:07

Wont start when warm! (mk1)

#2 2021-08-02 02:47:54

Re: Wont start when warm! (mk1)

#3 2021-08-02 12:29:00

Re: Wont start when warm! (mk1)

#4 2021-08-02 22:19:01

Re: Wont start when warm! (mk1)

#5 2021-08-03 09:35:05

Re: Wont start when warm! (mk1)

#6 2021-08-03 09:49:44

Re: Wont start when warm! (mk1)

#7 2021-08-03 14:34:50

Re: Wont start when warm! (mk1)

#8 2021-08-03 21:26:03

Re: Wont start when warm! (mk1)

#9 2021-08-04 10:20:31

Re: Wont start when warm! (mk1)

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