By a bizarre coincidence whilst  I was busy cleaning the huge amount
of gunk in the rubber seals around the Terrano driver's window, my
immediate neighbour's son comes up and says-well, my Fiat is
misbehaving.
When I enquired what was up with his 47,000 Fiat, it came as a
surprise to learn that he was having similar problems as I am with the
Terrano (hopefully sorted out later this week). (And many thanks for
those replies,too)
Apparently in the last week he suddenly loses power when in 5th gear
and a red light comes on - I believe the pre heat warning light. His
Fiat specialist is,alarmingly perhaps, not immediately sure what is
up-and it is still in their garage. It always occurs when he is
accelerating ( the limited extent that 5th will,presumably).
As the son is going to oblige and fit new taps to the kitchen sink, I
promised to post his predicament to see whether anyone else has heard
of this issue
Cheers Robin

"Robin Nicholson"  wrote in
message news:30iae1dl3vf4jupqmnkvanjm4b4t7lrq0h@4ax.com...

> By a bizarre coincidence whilst  I was busy cleaning the huge amount
> of gunk in the rubber seals around the Terrano driver's window, my
> immediate neighbour's son comes up and says-well, my Fiat is
> misbehaving.
> When I enquired what was up with his 47,000 Fiat, it came as a
> surprise to learn that he was having similar problems as I am with the
> Terrano (hopefully sorted out later this week). (And many thanks for
> those replies,too)
> Apparently in the last week he suddenly loses power when in 5th gear
> and a red light comes on - I believe the pre heat warning light. His
> Fiat specialist is,alarmingly perhaps, not immediately sure what is
> up-and it is still in their garage. It always occurs when he is
> accelerating ( the limited extent that 5th will,presumably).
> As the son is going to oblige and fit new taps to the kitchen sink, I
> promised to post his predicament to see whether anyone else has heard
> of this issue


On this application- you'll more than likely find the MAF (mass airflow
sensor) is faulty. Fairly common problem on this car. (Assuming no undue
smoke or other running problems) This would be a permanant fault though- you
could reproduce it at will.

What happens is they provide perfect output to the ECU upto a certain
airflow but then stick- increased airflow doesnt give a higher output- so
the ecu carries on fuelling for less load than there is- reduced power.

On the JTD also check that no pre-turbo inlet hoses have gone soft from oil
contamination etc and are collapsing when the turbo is sucking hard- most
likely in a higher gear- which is also fairly common. I've seen the
underbonnet sound insulation drooping and being sucked over the inlet. This
fault will produce lots of black smoke.

Both causes will illuminate the MIL.

Otherwise he'll need to get the fault memory checked.

Tim..