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Old 01-12-2019, 06:05 AM   #1
jerry
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S4 not running

Ok im in Thailand now ,, S4 not good

so far i have drained the old fuel its pure Benzine and its ok ,, fuel pump is working and fuel lines are brand new ,, injectors are clean fuel is flowing

bike started when injector cleaner and fuel blown down the inlets so its not immobiliser

NEXT

removed power commandrr ,, no different still not starting ,, checked all wiring connectors and , relays all good ..except the 3 pin connector from crank pickups to main loom its disintegrting after 19 years of heat and UV ,, ,, so remove connector and splice the 3 wires they are not insulated 2 are copper one is steel

bike now starts sometimes runs ok on tickover and revs well and charging is working 14v,, but it is not reliable enough to ride ,, seems part of the problem is the crank sensor cable connector

its an AMP junior power 3 pin plug and socket similar to the TPS on but in line male anf female need part numbers to order it all online

anyone know if it requires proper connector to run or is a splice ok ?????

or am I missing something,?????

, the wiring loom seems a bit fragile too after 19 years in extreem heat ,, i also suspect an issue with wire to immobilier may be weak bike starts ok 2 03 times runs fine forv 10 mins switch off have a cup of tea ,, and then it may not start intil i wiggle a few wires ???
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Old 01-12-2019, 09:10 AM   #2
Ron1000
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Can you buy an entire new(used) loom on eBay and get it shipped over?
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Old 01-12-2019, 12:37 PM   #3
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It worked before you left so what has changed in the intervening period?
Bike has been subject to high ambient humidity without ability to burn off excess moisture, I would look at any connector that would attract moisture (wires leading downhill to the connector) and particularly the coil sticks.
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Old 01-12-2019, 01:32 PM   #4
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The bike now starts sometimes .. I have spare coils .. its not coils IM thinking immobiliser cables or the splice in the crank sensor cables ,,its very intemittant issue
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Old 01-12-2019, 01:35 PM   #5
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Quote:
Originally Posted by Ron1000 View Post
Can you buy an entire new(used) loom on eBay and get it shipped over?

S4 looms are rare if they ever pop up in breakers ,shipping one over is possible but a big hassle and potentially expensive

im probably better off sourcing the Amp Connectors and refurbing what I have ,,
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Old 02-12-2019, 07:25 AM   #6
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I suspect the immobiliser is also intermittant what do i need to do to Remove immobilisr entirely ???as that would solve any issues with that part

would a Ducati dealer with mathesis be able to do it ????

I alo need to identify the correct part number for the 3 pin Amp Junior power connector male and female as It can be ordered in Bangkok if i have part number ????
its seems that as the wires from the crank sensors are un insulated ,,so a splice is no good , it upsets the timing pulses and seems to switch off the fueling circuit ,,,
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Old 02-12-2019, 09:44 AM   #7
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When my crank sensor went intermittent the engine management would light up and an error code logged, bike would run but would occasionally misfire. So if you're not seeing that then like you I would suspect an immobiliser issue.

When I enquired with Neil at Cornerspeed about disabling the immobilser on mine, he couldn't do it but knew someone who could. It's a re-flash but not a regular one. I think Rob knows where you can get it done.

BTW Do you still have the '01 DP ECU I sent you? I was told that this had not been keyed so the immobiliser should be off but I only had the sellers word for that. I didn't try it. May be worth trying it out.

I too parked up my S4 with no issues and now some time later have an intermittent engine management light when I turn on the ignition, and bike won't start when this happens but it was fine before laying up! I only replaced the battery. I've yet to investigate further what the error is since I can't fine my PC Diag leads.
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Old 02-12-2019, 10:57 AM   #8
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Darren I have the DP ECU so may try that ,, My bike is 2001 NO engine management light ,, I think the main problem is the 3pin junior power connector on Crank sensor cable when i fiddle with the spliced cables it sometimes runs crank sensor is OK
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Old 02-12-2019, 02:10 PM   #9
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Can't you just buy any matching male and female 3 pin amp superseal connector if you're going to repair your loom? doesn't have to match the original then.
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Old 02-12-2019, 02:23 PM   #10
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If it is the sensor not the plug faulty, then he would have none standard plugs and would have to replace with the original type anyway in order to fit a replacement sensor.
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Old 03-12-2019, 05:33 AM   #11
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Quote:
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Can't you just buy any matching male and female 3 pin amp superseal connector if you're going to repair your loom? doesn't have to match the original then.

Its not a superseal connector its JPT junior power connector like 2 pin injector ones but 3 pin male and femal ,, im certain I can source it within Thailand from MOUSER now ,, or get them from UK the female one is easy to get its the male one that is less common ,, also need the rubber boots

BOY at chicane racing the best INDEPENDENT Ducati specialist can probably disable an immobiliser ,he may have spare pickups too .if not I can get from UK in 7days

The Main Ducati dealers are all useless SCRUNTS ,only interested in selling new bikes and charging 200% markups on spares they have to order ,,

we shall see..

I have dug out Ales;s Benelli TNT300 but its been standing since i left in March so battery may be dead and its still got no number plate , old one fractured and fell off in January I ordered a new one they said 3 months delay ??? yesterday took the paperwork to the government Vehicle Tax office and they say they dont have any record
of my replacement plate application ?????

meanwhile im thrashing the suzuli 113cc ''lets scooter'' like i stole it haha fun around town but slow on long runs only reaches 60mph
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Old 03-12-2019, 06:44 AM   #12
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It could be a broken cable in the headstock bundle.
Had this problem on my S4RS the problem was the thick black cable. try wiggling the bars when its running it may cut out.
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Old 04-12-2019, 11:50 AM   #13
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The PRIMARY problem is definitely the cable from the Crank sensors when i wiggle the splice i made it wants to work but without the correct parts im Buggered and cant move to next step in repairing bike so I need the 3 PIN TE AMP Junior power connectors ,, using any alternative may not work as they are power pulse /signal connectors ,, I am trying to confirm this with experts but its seems that way

Wonder if CAPO would know

so what I need to order first is the female part of the AMP TE 3 pin JUNIOR power connector 282191-1 can be bought easy in Bangkok online from MOUSER

But its no good without the 3 pin male plug counterpart and that i cant find a part number for in the AMP TE catalogue
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Old 04-12-2019, 02:30 PM   #14
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good news is I can get the correct connectors from polevolt in UK but how long to get ????

tech guys at motorapido reckon a splice should work ,, and my crank sensor must be ok if the bike does sometimes run ,,

as for immobiliser they cant see that being intermittant either ,, puzzling,, Im going to order the connecotrs and also source a new crank sensor as well,,

unfotunately nobody in thailand can flash ECU to remove immobiliser function ,, but my spare ecu may not be linked to immmobiliser ??? dunno yet ,,

gonna try and hook up the JP diag and see what it says if i can borrow the cables back from a pal

its times like this when i wish for a new bike ,, although i have got the little benelli 300 sorted
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Old 04-12-2019, 07:51 PM   #15
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Any of these any good - gives you the part number on this website

https://www.te.com/usa-en/plp/amp-co...alse&instock=N

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