My truck is a 2011, 190 D40 Tekna, just under three weeks old with 3000 miles on the clock. Completely stock engine. Twice in the last week, after cruising at 30mph for a few minutes, it seems to have gone into limp mode.
First time, I was stuck behind a lorry doing about 25-30mph for about two miles until we hit a hill with a climbing lane. When I moved out to pass, I had no power to go. I dropped a gear (to third) thinking I was in too high a gear for it to pull, but that was no better. I didn't plant the throttle down hard, only about half way down initially, then floored it when I was getting no response. I struggled past him, and pulled in at the first place where it was safe, switched off the engine, started it again, and everything was fine.
Same thing happened today, I was in a 30mph limit, ticking along in 4th with cruise control on. Slowed down approaching traffic lights, but they turned green as I approached. When I put a bit of power in, I thought I could feel again that there wasn't much there, so I gave it a good poke to check it, and sure enough limp mode again.
There was no engine management light on. In fourth at about 30mph, when I blipped the throttle, it would pull a bit with a torquey grunt, but when I dropped to 3rd, and revs went above 1500rpm, there was almost no reaction. Is that what limp mode feels like?
I clutched, killed the engine, switched the keys back on, let the clutch in and it went back to normal.
I read what posts I could find about D40s going into limp mode, but they all seemed to have the problem under harsh acceleration, or with a fault showing on the dash. I'll put the OBD on tomorrow when I have time to see if there are any codes showing.
Any ideas what this could be? I obviously want to bring this to the dealer's attention asap, but I'd prefer to go into them telling them what the problem is, rather than asking them to look for it.
Thanks in advance.
First time, I was stuck behind a lorry doing about 25-30mph for about two miles until we hit a hill with a climbing lane. When I moved out to pass, I had no power to go. I dropped a gear (to third) thinking I was in too high a gear for it to pull, but that was no better. I didn't plant the throttle down hard, only about half way down initially, then floored it when I was getting no response. I struggled past him, and pulled in at the first place where it was safe, switched off the engine, started it again, and everything was fine.
Same thing happened today, I was in a 30mph limit, ticking along in 4th with cruise control on. Slowed down approaching traffic lights, but they turned green as I approached. When I put a bit of power in, I thought I could feel again that there wasn't much there, so I gave it a good poke to check it, and sure enough limp mode again.
There was no engine management light on. In fourth at about 30mph, when I blipped the throttle, it would pull a bit with a torquey grunt, but when I dropped to 3rd, and revs went above 1500rpm, there was almost no reaction. Is that what limp mode feels like?
I clutched, killed the engine, switched the keys back on, let the clutch in and it went back to normal.
I read what posts I could find about D40s going into limp mode, but they all seemed to have the problem under harsh acceleration, or with a fault showing on the dash. I'll put the OBD on tomorrow when I have time to see if there are any codes showing.
Any ideas what this could be? I obviously want to bring this to the dealer's attention asap, but I'd prefer to go into them telling them what the problem is, rather than asking them to look for it.
Thanks in advance.
