Transit T350 2.4TDCI 103kw AWD 2010 doesn't fire up, no fault codes.

Share your FORScan experience with other users
Post Reply
qhad
Posts: 3
Joined: Tue Dec 13, 2016 3:39 pm
Vehicle: Transit 140 T350 AWD Trend -09 (2.4TDCI, 103kw)

Transit T350 2.4TDCI 103kw AWD 2010 doesn't fire up, no fault codes.

Post by qhad » Wed Jun 27, 2018 8:19 am

Hi - I have a major problems with Transit, basically it will fire up quite good as cold but if I turn engine off right away let's say after one minute of cold start and try to start up it again, it just don't fire up. We have tried to fix it within two months by now. Car has now 125tkm on clock.

- Injectors has been tested on Bosch service, seems to be good
- New CR-pump has been installed
- New batteries has been installed

With Forscan I have logged RPM, BplusVolt, IAT,IAT2,CHT,FRP Volt,FRP_DSD,FRPkpa,FRTcTemp,FRT_V,PCMID_C,PP_LRN_VAL.
- How much RPM has to be ECU to trying to start engine? Now it shows between 230 and 280rpm when it doesn't fire up
- FRP_DSD(rail pressure desired) is 36625kPa on start. On start spike FRP is between 44000-48000kPa and it decrease down to 25000kPa after one second of firing up(and stays there). Is this a normal behaviour?

Please give me some ideas :cry: :cry: :cry:

f-wolf
Posts: 174
Joined: Sat Apr 18, 2015 12:41 am
Vehicle: Ford XR6 Turbo BA MK II 6 Speed Manual

Re: Transit T350 2.4TDCI 103kw AWD 2010 doesn't fire up, no fault codes.

Post by f-wolf » Wed Jun 27, 2018 11:20 pm

Hi there

Looking at Your Pressure readings ... Those readings are much too low !!

*** Typical working pressure on a common rail system is about 1600 to 1800 bar, or 23,000 to 26,000 psi.


PSI-KP.jpg
PSI-KP.jpg (10.64 KiB) Viewed 90 times
https://www.google.com.au/search?ei=yRw ... V2OZGeP1hk


UNDERSTANDING TYPICAL PROBLEMS OF COMMON RAIL FUEL SYSTEMS

https://www.dieselworldmag.com/diesel-t ... l-systems/


Pressure Conversion Chart
Pressure.jpg
Pressure.jpg (70.39 KiB) Viewed 94 times


I would say there is a problem with the PCV ( Pressure Control Valve ) ... and or RPS ( Rail Pressure Sensor )

Common Rail Injection System Pressure Control

https://www.dieselnet.com/tech/diesel_f ... .php#valve

qhad
Posts: 3
Joined: Tue Dec 13, 2016 3:39 pm
Vehicle: Transit 140 T350 AWD Trend -09 (2.4TDCI, 103kw)

Re: Transit T350 2.4TDCI 103kw AWD 2010 doesn't fire up, no fault codes.

Post by qhad » Wed Jul 11, 2018 1:35 pm

Hi t-wolf, what do you think about how about desired value (rail pressure desired) which are coming from as static map of ecu? It's 36625 on start so about 400bar. If it should be 1600bar on start, ecu will ask really too low pressure.

Also we just changed also RPS, It didn't help. As far as know PCV is a part of CR-pump here and I was a first part which we changed to totally new one.

Donny
Posts: 13
Joined: Sun May 08, 2016 9:00 pm
Vehicle: Focus 1.6 Tdci 201071QP67

Re: Transit T350 2.4TDCI 103kw AWD 2010 doesn't fire up, no fault codes.

Post by Donny » Fri Jul 13, 2018 8:52 pm

I don't know what your figures should be but you are unlikely to see FRP figures of over 1000 Bar with the Van stationary, even if you rev it hard. With the vehicle moving under load the pressure can go over 1500 Bar under acceleration.

I think your problem is an air starvation one. If your engine has an Anti Shudder Valve (Throttle Valve) in the Throttle Body near the Inlet Manifold then it could be sticking closed under certain circumstances. This is a common cause of starting problems with Diesel engines.

The one on my car is operated electronically and can be monitered by FORScan, but your one may be vacuum operated and I'm not sure if FORScan can moniter it.

The next time the starting problem occures if you tap the Throttle Body it should free the valve if it is stuck, and the engine will start instantly.

If your engine has Swirl Flaps they could also be faulty, othewise there may be some other physical obstruction in the Air Intake system.

There could also be air in the fuel, but I doubt it and presume that you have already checked that out.

Good luck

denbo
Posts: 170
Joined: Mon Feb 06, 2017 3:00 pm
Vehicle: ford focus 16 zetec

Re: Transit T350 2.4TDCI 103kw AWD 2010 doesn't fire up, no fault codes.

Post by denbo » Sat Jul 14, 2018 3:11 pm

Check the E.C.T. sensor.

Post Reply