View Full Version : TD5 Crank Position Sensor And Injector Timing Delay?
Max Headroom 2.3m
17th December 2019, 03:57 PM
Hi Everyone,
I am considering moving the engine ECU (ECM) from under the seat (possibly to the centre cubby box) which will require extending the wiring harness by up to a metre. I would think that most circuits won’t be affected provided that appropriate wire thickness is used and quality connections are made. However I am unsure whether or not the crank position sensor and fuel injector circuits may be affected by introducing a slight delay as a result of the longer wiring. I understand that any delay would be minuscule but injector timing, which is linked to the crank position sensor, is calibrated down to nano seconds.
I am no electronics whizz so I would appreciate if anyone having experience with this or an electronics background, could advise whether or not a significant delay would be introduced.
Cheers
Tombie
17th December 2019, 04:19 PM
Won’t cause a problem.
There is a commercially available extension.
djam1
17th December 2019, 06:18 PM
Make sure the cps is shielded like the original wiring
Max Headroom 2.3m
17th December 2019, 08:01 PM
Won’t cause a problem.
There is a commercially available extension.
Good to hear that it is do-able. I looked up the commercially available extension which is 2m long (Terrafirma TFEL052) but that sure is an expensive little puppy. I guess it is a plug and play and can always go back to original if need.
Make sure the cps is shielded like the original wiring
If I go the cut and splice route then yes I had planned to use shielded microphone cable for the CPS (CKP?) as that has the greatest cross sectional area I could find at 0.30mm2 (22AWG).
Thanks for your help guys. AULRO wins again.
djam1
17th December 2019, 08:17 PM
I presume you know about Mulgo’s Xbox
Pretty sure you don’t need to extend the wiring
Max Headroom 2.3m
18th December 2019, 01:54 AM
I presume you know about Mulgo’s Xbox
I do now and I want one! That is a much better way to go and will resolve some other issues at the same time. I presume all the TD5 electricery will fit in there and yes, it looks as though no wire extension needed [biggrin].
Thanks.
Rolly
19th December 2019, 01:55 PM
I’ve installed the ECU within the Mulgo X-box. I do however have the Puma 2.2 and there was no need to extend the wiring harness. I did however need to extend the wires for the Bass unit which sits slightly above the xbox.
Max Headroom 2.3m
19th December 2019, 11:46 PM
I did however need to extend the wires for the Bass unit which sits slightly above the xbox.
Not sure what a Bass unit is but I am pretty sure I don't have one. However, I could be wrong....it has happened[bigsmile1]. The TD5 engine/ECU and ABS ECU harnesses both pass from the passenger side over the top of the transfer case to the driver's side seat box so I am reasonable confident I should be able redirect them upwards into the Mulgo XBox.
Probably losing the thread here a bit but what do people use as heat shield insulation under the Mulgo XBox (name, thickness and where to buy)?
Ta
Rolly
21st December 2019, 08:18 AM
I bought an Aluminium dimpled heat shield from a local auto retailer. Prob 1mm thick and needed tin snips to shape. Whatever you use will be better than not using anything.
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