Eirediver
New member
Hi all, hope you can help with a problem I am having on my motorhome.
2010 Fiat Ducato motorhome (Left hand drive) 2198cc with engine code 1736407 (4HV) which I believe is the 100 Multijet / 2.2 HDi engine (I am not 100% on that, but that's the best I could figure out online)
Vehicle takes off fine in 1st gear, but as soon as you engage 2nd gear the acceleration completely drops, no lights on the dash show and the engine is barely accelerating, if you keep the accelerator fully depressed it eventually climbs speed slowly and then once up to speed you engage 3rd gear and your acceleration is back to normal. On other occasions the same can happen in 3rd gear instead of 2nd gear (but appears to be less severe of a loss of power in 3rd gear, that may be due to the fact that the vehicle is at a higher speed than when going from 1st to 2nd). The whole vehicle almost feels like it brakes when this happens and everyone gets shunted forward, it is an obvious and sudden loss of power.
Engine runs fine other than this, no other issues.
Fault is intermittent, only happens sometimes after a cold start, once it happens once it runs fine after that and may or may not happen the next day, at the next cold start, being a motorhome it isnt used every day and is parked up (outdoors) for long periods of time. I suspect the fault happens more often after a wet night, but that may also be just by chance.
Mechanic has removed DPF and EGR, but fault continued a few months later, I haven't got to get it checked reliably for any fault codes as previous mechanic cleared the codes and said to come back to him once problem happened again but it didn't happen for several months and he's not really interested now, I need to get to the bottom of it now as I can't trust that I won't breakdown while abroad and end up stranded.
I've searched the forum and read several similar problems pointing towards throttle body and electrics and possibly a clutch sensor (recent thread) but other threads are for different engines and not exactly the same symptoms, so opened my own thread to look for some advice, really appreciate any pointers here.
Andy
2010 Fiat Ducato motorhome (Left hand drive) 2198cc with engine code 1736407 (4HV) which I believe is the 100 Multijet / 2.2 HDi engine (I am not 100% on that, but that's the best I could figure out online)
Vehicle takes off fine in 1st gear, but as soon as you engage 2nd gear the acceleration completely drops, no lights on the dash show and the engine is barely accelerating, if you keep the accelerator fully depressed it eventually climbs speed slowly and then once up to speed you engage 3rd gear and your acceleration is back to normal. On other occasions the same can happen in 3rd gear instead of 2nd gear (but appears to be less severe of a loss of power in 3rd gear, that may be due to the fact that the vehicle is at a higher speed than when going from 1st to 2nd). The whole vehicle almost feels like it brakes when this happens and everyone gets shunted forward, it is an obvious and sudden loss of power.
Engine runs fine other than this, no other issues.
Fault is intermittent, only happens sometimes after a cold start, once it happens once it runs fine after that and may or may not happen the next day, at the next cold start, being a motorhome it isnt used every day and is parked up (outdoors) for long periods of time. I suspect the fault happens more often after a wet night, but that may also be just by chance.
Mechanic has removed DPF and EGR, but fault continued a few months later, I haven't got to get it checked reliably for any fault codes as previous mechanic cleared the codes and said to come back to him once problem happened again but it didn't happen for several months and he's not really interested now, I need to get to the bottom of it now as I can't trust that I won't breakdown while abroad and end up stranded.
I've searched the forum and read several similar problems pointing towards throttle body and electrics and possibly a clutch sensor (recent thread) but other threads are for different engines and not exactly the same symptoms, so opened my own thread to look for some advice, really appreciate any pointers here.
Andy