I occasionally drive an 18T Eurocargo box with a 6 speed automatic box. It's the one with 3 buttons, R/N/D, which gives Slow/Semi/Auto modes with the facility to change gear with the lever to the right of the steering wheel. Think that it's an Eutronic gearbox.
Iveco Eurocargo 75E 17 Chassis Cab. MOT: 31 August 2020; Mileage: 652384 KM; Manual Gearbox, Sleeper Cab, 12ft Body, no known mechanical faults. Please ignore the back as that is coming off and staying with the seller. Iveco Eurocargo Tector Workshop, repair and owners manuals for all years and models. Free PDF download for thousands of cars and trucks. Click for manuals and specs on your Iveco engine model 8031,8041,8051,8061 Industrial engine specs,manuals 8031,8041,8051,8061 Marine engine specs,manuals 8061 SRM33 Marine engine specs,manuals Cursor C78,C10,C13 specs,manuals Iveco Daily specs,manuals NEF Engines F4BE thru F4GE specs,manuals 8131, 8141 specs,manuals 180E28 Truck.
It's a 58 plate, with 200,000 Kms.
The gearbox has suffered a fault in warm weather since 2011, despite some investigation / parts replacement by the dealer.
A fuller description below:
The fault occurs in warm weather, so happens often on the continent but has also happened in London and even in Edinburgh. The warmer the ambient temperature, the more likely that the fault will occur and the more severe the problem.
Scenario 1
Driving on the motorway for 4.5 hours in warm weather. Easy driving so the gearbox doesn't have to do much. Drive into the services and stop so that the truck can be manoeuvred into a parking space. Once the truck has stopped it can't be moved again - the engine can't be revved up. Pressing the gearbox buttons only changes the display to N and usually also the gearbox fault symbol. It's not a true neutral because the engine speed can't be increased above idle.There is a noise which sounds like a pump straining. It can take 10 to 40 minutes before a gear can be selected. The first thing to return is 1 SLOW but with the fault symbol still showing when the truck can be moved forward slowly. It needs more time before R can be selected. When it does select 1 or R, there is a thump and a lurch. If the truck is then driven for only 5 minutes and stopped, the fault is there again and it will take another long time before it can be moved. Leave the truck for the drivers 45 minute break and it can be used but the selection of 1 or R is very slow to happen - maybe 5 seconds.
This bit I don't understand - during the fault - if the engine is switched off and then restarted - the display will show N with no fault symbol - and it is a true neutral because the engine can be revved up but pressing either D or R will put it into the fault condition so that the display remains at N but with the fault symbol and the engine can't be revved. What changes it into neutral? Is it a different system? a spring? air pressure?
Scenario 2
Driving on the motorway for 3 to 4 hours in warm weather. Easy driving so the gearbox doesn't have to do much, but will change between 4, 5, and 6 normally. The traffic stops so the truck is braked to a stop - it changes down to 3 and stops. The traffic moves on but the truck can't be moved - it won't rev - it might show 3 for a while but will usually show N with the gearbox fault symbol. Then it's the same situation as above - needs time before 1 SLOW can be selected.
Again, this bit I don't understand. If I anticipate that the traffic is going to stop, and I use the column lever to change down to 2 or 1 just before the truck stops moving then it can be kept driving.
Scenario 3
When the truck appears to be working OK, in cool weather, even in Scotland it can be very slow to select 1 or R - a few seconds. The time is so significant that if someone is waving you back, then they will start to wonder why you aren't moving.
I don't know how the gearbox works - it seems to me that the system for selecting 1 / 2 or R is different to the gearchanges between 3 / 4/ 5 / 6 and different again to the system for putting the gearbox in N when the engine is stopped.
Iveco Cargo 75e Service Manual Form
When the gearbox is at fault it feels to me as though hydraulic fluid is either aerated or has thinned down in the heat and so won't move the internals.Iveco Cargo 75e Service Manual 2017
Has anyone came across this fault? Any tips to get moving again? Another guy who drives the truck suggests revving it up in neutral, and then pressing D. I'm not convinced that it helps, the drive by wire pulls the revs down to idle anyway before attemting to select drive.
TIA
Ash