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| Injection System Faults; 2004 35S12 LWB with characteristic flashing EDC light | |
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| Tweet Topic Started: Aug 13 2015, 06:02 PM (3,296 Views) | |
| zoorooms | Aug 13 2015, 06:02 PM Post #1 |
Newbie
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Ok so like many other Iveco owners my 2004 35S12 Iveco is showing a warning light suggesting injection system faults. Mine is a bit different than other people's in that my problems seem to occur when the light is not flashing! So I start the van in the morning first time and go for a drive....no warning lights nothing, then engine randomly dies and I have to pull over to restart.... no warning lights during this process. On turning the ignition the van struggles to start and then the EDC light comes on, the van starts with a puff of smoke from the exhaust. The van will now drive (struggling up hills if fully loaded) as the EDC light continues to flash. I can drive the van with no fear of the engine dying in this mode?? From what I have seen online flashing EDC lights appear to be a mystery to most. Obviously I want to try and resolve the issue as cheaply as possible and wonder at the best plan of attack. Since the van is currently running I can take my time at working through potential problems. From research online last night I have arrived at the following possibilities, although apparently there are 4000 possible causes for the EDC light to come on. I am mechanically incompetent, most of this means nothing to me, so how would Sherlock Holmes resolve this problem and can anyone put the following possible solutions in some sort of starting order with costs so that I can try methodically to resolve this issue. Please feel free to add more potential solutions to my current 14 point list! 1. Potential issue with fuel pressure sensor / regulator on the back of the injection pump 2. EDC relay swith 3. Low pressure pump (If you follow the fuel hoses coming out of the fuel tank, one is a supply and 1 is a return, follow them and one will have a small inline filter (white thing) and the pump will be right after it..... have someone turn the ignition on and listen/touch the pump to see if it's working....next go to your fuel filter and disconnect the incoming pipe (it should have an arrow on it) then have someone turn the ignition on.... fuel should come out of this pipe pretty quick.... if it doesn't then there is a problem with the lift pump, or that little white inline filter before the pump 4.Contacts in the injector plugs need closing 5. Wiring Connections on top of the 3rd and 4th injector are working loose (i had exactly the same, it was number one injector! i let the van tickover,(it was very lumpy) and took off the leads one at a time, the injector won't start again unless you turn off the ignition and wait a couple of minutes for it to clear, i noticed the wiring to number one was tight and the problem usually happened after a sudden bump, then she'd run on three and i'd have to get out wiggle the wire and she's start on four again. i crimped the end of the plug to make it a tighter fit and haven't had the problem since......this is a known issue and iveco have modified the loom 4 times....but tightening the end of the injector loom will work injectors 4+2 are the problem 6. Crank sensor issues 7. Injector problems 8. Replace fuel filter 9. Diagnostic test 10. Injector wiring loom....loom to injector dump solenoids 11. Throttle valve 12. High pressure pump 13. Turbo 14. Injector leak off test Just found another one, 15. Lambda sensor needs replacing Edited by zoorooms, Aug 13 2015, 06:11 PM.
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| Bazil-S | Aug 13 2015, 09:10 PM Post #2 |
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Hi, Try a diagnostic test, in this way you avoid replacing the parts in vain. Check the timing belt. |
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| ivecofd | Aug 14 2015, 04:30 PM Post #3 |
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5C12 2005 MWB DRW 3rd gen’ crew cab tipper F1AE04 85.3 kw 2.3 cc 16v EDC 16. So I start the van in the morning first time and go for a drive....no warning lights nothing, then engine randomly dies and I have to pull over to restart.... no warning lights during this process. On turning the ignition the van struggles to start and then the EDC light comes on, the van starts with a puff of smoke from the exhaust. The van will now drive (struggling up hills if fully loaded) as the EDC light continues to flash. I can drive the van with no fear of the engine dying in this mode?? EDC light do you refer to the light at about 2 o-clock, in the lhs round aperture, that looks like an injector? The light that looks like an injector is for the EDC and according to the blurb is EDC FAILURE. What Iveco mean by failure could be just a fault. Information about Iveco vehicles is unclear. On mine put in the starter key and turn it = lots of lights on the console, after a few seconds all of which go out except battery, oil and hand brake. On engine start the battery and oil go out. With engine running only the hand brake is on. Some time ago the airbag light would be on steady, there was no airbag, the fuses for the airbag were removed and the light has not come on again. Also the brake warning light came on intermittently sometimes seeming to flash sometimes steady, later found that a bad connection had been made on the rhs front wires to/from the brake pad. From what I have seen of these two lights the warning lights should be steady. Just had a look in the handbook and in the workshop manual and I did not find any reference as to what the console lights are supposed to do - flash or steady. If the lights are supposed to be steady then a flashing light could indicate an intermittent fault which could be a poor wiring/connector connection. So it could be an idea to check associated wiring and connectors. Sometimes pulling apart and reconnecting a connector can remake the connection good, give them a squirt of WD 40 inside. A lot of the wires are thin so be careful you don't pull them too much. As the engine stops then it is likely the fault is with the fuel supply/engine sensors. I have had a look at the workshop manual but as yet I have not found any guidance to why the engine stops. The workshop manual is not specific with all the required info' collated to fault find a particular problem, it is a pain to use. That which is in attachments is for an F1A engine it isn't everything but could help to find the wiring/connectors to reconnect. As Bazil s has said the diagnostics could be the quicker way to go. |
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