Jump to content

TD5 STILL won't start....


SiWhite
 Share

Recommended Posts

Right folks, I need some serious help with this.

The TD5 STILL doesn't start. Stuff I've tried so far....

  • New injector washers and O Rings
  • New injector loom
  • Fuel pressure checked - fine
  • Air in the fuel - checked with clear tube - still a TINY bit when the pump starts
  • New known ECU programmed to injectors and 10AS
  • Faults checked - nothing apparant - and cleared on Nanocom and Rovacom
  • Long tow to rule out the starter
  • Crank position sensor verified with Nanocom

Everything works like you'd expect - immobiliser light goes out, alarm light responds to the plip of the fob, fuel pump pumps (bit noisier than I'd expect, but flow and pressure are fine), glow plugs work and engine cranks beautifully.

After the tow tonight, there was no smoke from the exhaust and no diesel-y smell from anywhere. The engine didn't even try to start.

The only things I can think that might be causing this are;

  • Fuel still not getting to injectors - will a bad fuel pressure regulator cause fuel to bypass the head completely?
  • Noisy fuel pump - but I have flow and pressure so should still be OK?
  • ECU is still showing as immobilised on nanocom (Rovacom has no facility to show immobilisation status) even though immobiliser light on dash goes out
  • ECU is still not passing the 'fire' instruction to the injectors - even they 'click test' on diagnostic
  • Blue connector by ECU - appears in order - could this cause these symptoms?
  • Is there a relay or fuse that will prevent firing of injectors - nothing found in the workshop manual
  • Could someone confirm where the three ring-terminal earths by the ECU go to? All are on the seatbox stud for now....

Please no-one suggest anything about getting a different engine - bit past all that to be honest..... :(

Link to comment
Share on other sites

Right folks, I need some serious help with this.

The TD5 STILL doesn't start. Stuff I've tried so far....

  • New injector washers and O Rings
  • New injector loom
  • Fuel pressure checked - fine
  • Air in the fuel - checked with clear tube - still a TINY bit when the pump starts
  • New known ECU programmed to injectors and 10AS
  • Faults checked - nothing apparant - and cleared on Nanocom and Rovacom
  • Long tow to rule out the starter
  • Crank position sensor verified with Nanocom

Everything works like you'd expect - immobiliser light goes out, alarm light responds to the plip of the fob, fuel pump pumps (bit noisier than I'd expect, but flow and pressure are fine), glow plugs work and engine cranks beautifully.

After the tow tonight, there was no smoke from the exhaust and no diesel-y smell from anywhere. The engine didn't even try to start.

The only things I can think that might be causing this are;

  • Fuel still not getting to injectors - will a bad fuel pressure regulator cause fuel to bypass the head completely?
  • Noisy fuel pump - but I have flow and pressure so should still be OK?
  • ECU is still showing as immobilised on nanocom (Rovacom has no facility to show immobilisation status) even though immobiliser light on dash goes out
  • ECU is still not passing the 'fire' instruction to the injectors - even they 'click test' on diagnostic
  • Blue connector by ECU - appears in order - could this cause these symptoms?
  • Is there a relay or fuse that will prevent firing of injectors - nothing found in the workshop manual
  • Could someone confirm where the three ring-terminal earths by the ECU go to? All are on the seatbox stud for now....

Please no-one suggest anything about getting a different engine - bit past all that to be honest..... :(

if its immobalised it will still crank but simply just wont fire.

the ecu just isnt giving the injectors any signal to open what so ever by the sounds of it.

have you tried a ecu thats got the 10as removed at all ?

if your not desperate i could have a run down next weekend with my very basic ecu for you.

dan

Link to comment
Share on other sites

Thanks for the offer Dan - I've already put a few folk out of their way helping me out with this. We'll stay in touch about that if you don't mind...?

So maybe it is immobilised still? Very curious that the immobiliser light goes out on the dashboard :huh: I've got the exciter coil round the ignition and have programmed everything to 'plip immobilise' with Nanocom. Maybe I've missed something and it still hasn't un-immobilised.

Anyone got an idiot's guide to un-immobilising a vehicle - have access to Nanocom and Rovacom (thanks fellas....!)

Link to comment
Share on other sites

Si

I'd try another ecu without any of the plip ****e attached.

Maybe the ECU just can't handle that? Never had any of that on it before so i'd try another ECU if poss.

Have you / do the injectors need to be dailed in?

If these things are so easy to pinch then maybe a factory imobilser is not the way to go?

Link to comment
Share on other sites

Marcus,

Thanks for the reply. It didn't do anything when it had the setup I bought from you, so I now have a new ECU, 10AS and exciter coil. Injectors are programmed.

The thing that makes me think it may still be immobilised is Nanocom, which still says "ECU Immobilised' despite the plip deactivating the immobiliser light on the dash.

How was the ECU running without a 10AS before Marcus? Had the ECU been modified at all?

Link to comment
Share on other sites

simon i highly doubt it's the pump

i can come down next weekend and bring another loom with me to completely isolate the vehicle ect

injector codes will make no odds to the engine starting.

if its not getting any signal to the injectors to open if theres no smoke what so ever.

you can test the injectors off the nanocom but that doesnt mean anything in signal terms for running.

dont go fitting a pump as ive got one spare aswel.

let me no what you want to do

dan :)

Link to comment
Share on other sites

Yowser - great offer Dan, thanks!

Through remarkable forum generosity I now have an ECU in the post that will not need a 10AS at all. This will tell me if it is the engine wiring loom or my ECU / immobiliser.

If I'm still stumped then Dan's offer would be amazing - SWMBO has said she'll make cake! Pub lunch ahoy!

Link to comment
Share on other sites

Si,

ECU was standard, was standard in the power train dept aswell.

Fuel pumps fine IMO, may sound noisy to you but when shes all together is OK, save your money.

"unlocked " ECU sounds the best bet, Dans offer sounds even better!!!

Link to comment
Share on other sites

Update - no update!

Just come off the phone from Porny who is a LEGEND and is driving down on Saturday morning in his TD5 to sort the old girl out.

I'm also going to get my 'spare' ECU turned into a standalone unit i.e won't need a 10AS. This will be a deep emergency bit of kit should anything ever go wrong in the future.

Fingers crossed, on saturday lunchtime Porny and I will be in my local with big cheesy grins!

Link to comment
Share on other sites

  • 6 months later...

This was a very interesting read. So glad that you got your td5 running. I was struggling with my td5 last year also ever since it went under up to the roof for 12 hours in the big flood in Manila.

I tried everything until I finally found out that the used ECU I ordered on ebay was defective and all it needed was a brand new ECU I bought from Singapore.

I also sought help from Porny but he wasn't online around that time.

Cheers!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...

Important Information

We use cookies to ensure you get the best experience. By using our website you agree to our Cookie Policy