Hi,


Recently took out my fuel injectors from a TD5 'Green Top Types' to have them sent away and tested due to intermittent misfire trouble, the car otherwise drives fine and having done lots of previous work on the fuel system have narrowed it down to the injectors being the last thing to go over. (Note: 120,000 miles on it now)


I presumed one injector was a dud as it kept popping up as faulty on the diagnostic tool as Open/Short Circuit from what I remember. The shop has been in touch and confirmed that the said injector needs either replacing or reconditioning as it has failed the test they have put it through, they have also said the remaining injectors failed the test and will cost £1500 to have them all reconditioned . As the place mainly deals with HGV fleets and commercial vehicles from big businesses i'd like to think this is why it is so expensive.


My original plan was to just replace the 'dud' with a reconditioned one for approx. £250 and put the others back in and see how things hold up, the advice i'm looking for is from anyone who has been in a similar position. Is there anywhere someone can recommend and would it be better to try and find five reconditioned injectors?


From the beginning i just wanted them cleaned and flushed out of any buildup but its looking more expensive now. And also given that I personally feel the car drives well enough (minus the odd misfire) how concerning would putting the remainders back in or could the shop be looking for some extra ££££


Cheers

buy a second hand one for 25 quid

Hi. At 120K miles there's no reason for an injector to fail, they should last at least 250k miles.... IMO those guys are trying to rip you off, first of all the open/short circuit code if it was from the injector itself it's highly unikely to be intermittent, that injector should have been completely dead and the engine to run in 4 cylinders, intermmittent open/short injector code is most probably triggered by the injector loom or rarely by the engine harness, did you check for oil in the ECU red plug ?, anyway, even if there's no oil replace the injector loom with genuine (AMR6103LR only), swap injector 4 with other and start from there, if you'll still get that code for the new position of the injector with new loom and clean ECU plug here's an option https://www.commonraildiesels.com/l...nditioned-delphi-diesel-injector-bebe2a01001/ for the faulty one, if you get the same code with swapped injectors the problem is with the engine harness, it can be chafed where the arrow shows
can be like this onlyon that circuit

Hi mate,

Many thanks for the detailed response that's a great help, it has been a mystery to me with the whole intermittent misfire thing. I'll put down what has been replaced to give you a better understanding. I was waiting for someone to mention injector loom haha.

- New Genuine Injector loom ( Checked multiple times for oil in ECU and never been a problem) I even swapped over with another loom to see if anything altered but still same fault code
- Genuine Fuel Pump, Fuel Pressure Regulator and even all the fuel lines and filter have been changed recently but still occasional misfires

I have often wondered about chaffing in the wiring or contamination but can't see anywhere that looks an issue but have always thought that could be the problem so will have another thorough look around. I also find it hard to believe that the injectors all need replacing/renewing as the car drives well enough minus odd misfires.

Just to clarify, the wiring you mention that is likely to chaff is along the lines that come from the plug that clicks into the loom I gather?

Many thanks for the help

**TD5** said:

Just to clarify, the wiring you mention that is likely to chaff is along the lines that come from the plug that clicks into the loom I gather?

Click to expand...

Yes

a mate has a TD5 with dodgy injector the local indy specialist (crook, imho) had it in, swapped all 5 injectors with his test set problem cured, wanted a fortune for a new set and coding so my mate being a tight farmer, said no.

Put the old ones back in and he is still driving it with the fault 4 or 5 years later. it only plays up under hard load. So certain you are fairly safe putting the old ones back in.

Good luck

Cavey_P38 said:

a mate has a TD5 with dodgy injector the local indy specialist (crook, imho) had it in, swapped all 5 injectors with his test set problem cured, wanted a fortune for a new set and coding so my mate being a tight farmer, said no.

Put the old ones back in and he is still driving it with the fault 4 or 5 years later. it only plays up under hard load. So certain you are fairly safe putting the old ones back in.

Good luck

Click to expand...

Is he still driving it now?