DSE Cut Out...

Hi everyone,

Ok, does anyone have any idea on this??

Coming home this evening, driving along at just under 30mph - felt the vehicle surge forward a little like it was accelerating and then suddenly the MIL lit up and engine died shortly followed by GEARBOX FAULT on the message display. Luckily this was on a quietish road and I just coasted off to the side.

Came to a stop, turned key to the OFF position and tried to restart. Engine spun over but no start. Tried it three times in total, nothing, not a hint of it going.

As I was near home I got my father to bring out my Faultmate MSV to me so I could plug in and have a look any faults that might of been logged. In the mean time I went round the engine bay and checked all sensor plugs, wiring and pipes for anything obvious.

Father + Faultmate MSV arrived and I got straight into it. Checked the engine ECU for any faults and found an error of FUEL VALUE OUT OF RANGE - cleared it and tried restarting, still nothing with this being re-logged below....

FUEL FLOW VALUE OUT OF RANGE, TOO HIGH, MAJOR FAULT, FAULT LOGGED, INTERMITTENT
(RPM = 0, WATER TEMP = 130)
OCCURANCES = 10.

Click to expand...

I also then went and checked the gearbox ECU and found this fault...

INVALID ENGINE RPM DATA.

Click to expand...

I didn't quite know what to do at this point and thought about ringing the AA. Before I did I thought I would have one last check around and plugged and unplugged a few engine sensors to check for any damamged pins or corrosion and also checked the injector pump round plug. After I had finished I then gave it one last go and it fired right up.

Now, thinking back I had this same problem in the past when I thought I had drowned my powerbox chip in water. Engine would cut out and you had to wait a good 5 mins before trying to restart. Eventually the chip seemed to give up altogether and the vehicle wouldn't start so I unplugged the chip from the injector plug and the problem went away. Im now just wondering if that isn't the fault any maybe its something within the pump itself.

The in-tank fuel pump is newish, definitely under a year old so Im pretty much ruling that out as a possible cause. I also had my FIP rebuilt at the end of last year as well so I wouldn't of thought that was a problem EITHER.

Are there any common causes to the FLOW VALUE OUT OF RANGE fault that anyone knows of??

Since the incident it still starts ok and idles fine. It drove home ok too. Im not sure what to do now, anyone have any ideas??

-Wills

I'd be inclined to have a chat with your local fuel injection specialist. I take it you have enquired on the "Blackbox Forum"

PS. if you find its a bad wiring connection and its the type of crimp connector that's on the transferbox ecu (small square pins), I use them at work so replacement crimp connections shouldn't be a problem.

sounds like a connection thats loose to me, possibly rattling loose with engine running. it might be worth going around all the plugs you messed with and dropping a small blob of silicone on em to keep em tight. if it happens again in the mean time try it after every connection you touch and mark em up so you can see if it is the same connection twice!

the gearbox faults could have just been due to the engine stalling.

Thanks for the replies - am going to have a closer look tomorrow afternoon at some point, will double check all plugs and see if I can find any loose connections.

Ive also asked over at the BBS forums and have got some ideas from there as well. Mainly to check out the 4th injector and the CKP sensor. Im also going to do a bit of a longer session on the diagnostic pooter to check the pump timing etc.

I know the invalid RPM data might of been because of an engine stall but I was wondering if the engine speed was mis-determined and more fuel injected than needed causing the fault?? According to the ETM though neither one of the CKP or injector sensors failing on their own would cause the engine to die though.

Tis an interesting little fault to try and find - will keep this thread updated with how it goes.

zzr - thanks for the offer of the pins - will let you know if I require any!

-Wills