Heavy load. Shift down

Sheded · Jul 2nd, 2018, 16:36

Hi all. Just towed caravan to Exeter en route to Newquay and this message appeared. Comes on between 50 and 60 on all motorway except downhill. Revs at 2000rpm which seems comfortable to me. If I hear down, after a few miles the temp goes up. Mind you, it is 32 degrees outside.
Any info appreciated
Oh, it’s a 2014 xc60 2.4 awd start stop

Clan · Jul 2nd, 2018, 21:17

Quote:

Originally Posted by Sheded

Hi all. Just towed caravan to Exeter en route to Newquay and this message appeared. Comes on between 50 and 60 on all motorway except downhill. Revs at 2000rpm which seems comfortable to me. If I hear down, after a few miles the temp goes up. Mind you, it is 32 degrees outside.
Any info appreciated
Oh, it’s a 2014 xc60 2.4 awd start stop

I'm wondering how heavy the caravan is or has it a binding brake ? all your tyre pressures at 40 psi I hope ? The hot weather might not help of course but historically, volvos temperature gauges never budge from centre .

If your fuel consumption is very heavy that might be a clue as to unusual wind resistance perhaps , what's it like at 50 mph constant ?

Sheded · Jul 3rd, 2018, 08:24

The caravan is 1400kg. No brakes binding or wind. Fuel consumption was excellent with computer stating 31mpg over 250 miles.
Tyre pressure 39 on all wheels. Really smooth at 50mph but heavy load shift down message comes on. Just on borderline between 4th/5th at 50mph.

Fursty Ferret · Jul 3rd, 2018, 08:37

It might be a factor of torque demand - perhaps the engine is under less load at a lower torque but higher engine revs?

Sheded · Jul 5th, 2018, 19:15

Well I guess I am learning to tow with a manual box. The car does 55 in 4th gear at 2500 rpm, and really seams quite comfortable. It does seem to be over revving to me, but is is pulling a tonne and a half. No warnings or overheating. We shall see what the journey home is like....

Jul 2nd, 2018, 16:36	#1
Sheded New Member Last Online: May 24th, 2019 20:45 Join Date: Jun 2015 Location: Barnsley	Heavy load. Shift down Hi all. Just towed caravan to Exeter en route to Newquay and this message appeared. Comes on between 50 and 60 on all motorway except downhill. Revs at 2000rpm which seems comfortable to me. If I hear down, after a few miles the temp goes up. Mind you, it is 32 degrees outside. Any info appreciated Oh, it’s a 2014 xc60 2.4 awd start stop Last edited by Sheded; Jul 2nd, 2018 at 16:37. Reason: Added details

Jul 3rd, 2018, 08:24	#3
Sheded New Member Last Online: May 24th, 2019 20:45 Join Date: Jun 2015 Location: Barnsley	The caravan is 1400kg. No brakes binding or wind. Fuel consumption was excellent with computer stating 31mpg over 250 miles. Tyre pressure 39 on all wheels. Really smooth at 50mph but heavy load shift down message comes on. Just on borderline between 4th/5th at 50mph. Last edited by Sheded; Jul 3rd, 2018 at 08:26.

Jul 3rd, 2018, 08:37	#4
Fursty Ferret Senior Member Last Online: Feb 26th, 2024 16:44 Join Date: Jul 2015 Location: Manchester	It might be a factor of torque demand - perhaps the engine is under less load at a lower torque but higher engine revs?

Jul 5th, 2018, 19:15	#5
Sheded New Member Last Online: May 24th, 2019 20:45 Join Date: Jun 2015 Location: Barnsley	Well I guess I am learning to tow with a manual box. The car does 55 in 4th gear at 2500 rpm, and really seams quite comfortable. It does seem to be over revving to me, but is is pulling a tonne and a half. No warnings or overheating. We shall see what the journey home is like....

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