G
Guest
Guest
Have a 93 80 12v UK spec LC 4 speed auto
When I first got it was returning about 24mpg, which I thought was
acceptable as it was running on 285/75 ATs (It's now running on 285/75
MTs). More would have been nice, but I didn't expect huge economy from a
3 ton 4.2l vehicle.
I've just done a 800mile round trip to the lake district from somerset
and have averaged 20mpg all the way- this is at a constant 63mph
indicated (a true 60). Whilst driving up there I noticed a few things- I
don't seem to be getting torque converter lockup- I certainly don't feel
it locking up and the engine revs too high before speed is picked up.
The vehicle is running 2150rpm to maintain a steady 60mph which seems
high to me- to get to 70mph I need almost 3000rpm! Don't forget this is
with oversize tyres too (albeit hard to turn MTs)
There seems to be a lot of drag in the transmission- I don't seem to be
down on power, it just feels like the vehicle is hesitating and being
pulled backwards- it's almost as if I'm pulling a trailer all the time-
vehicle won't accelerate up past 60 as it used to- I have to really
floor it to get it to accelerate. This feels gearbox related- as if the
clutches are engaging when they shouldn't.
A little while ago the Mrs was taking the car to get the Batteries
replaced (a dodgy alternator had destroyed them) when, on a trailing
throttle, the transmission locked up and stalled the vehicle- the o/d
light then started flashing. Unfortunately because the batteries were
then disconnected I never got to find out what the error code was!
What do I do? There is no way I am taking the vehicle to the local
stealer- how often are they going to see and test an old auto anyway?
Are there any tests I can do to ascertain T/C lockup 100%? Is there any
way of resetting the box back to factory defaults in case it's still
carrying a fault? Does anyone know of any LC G/box specialists and how
much I can expect to pay for a proper rebuild (as opposed to a repair)
as well as proper diagnostics?
Vehicle is in need of a C service, but has had fluids and filters
changed in the interim. Wouldn't expect a service to improve economy by
25%! Does anyone have any advice or could I be barking up the wrong tree
completely?
When I first got it was returning about 24mpg, which I thought was
acceptable as it was running on 285/75 ATs (It's now running on 285/75
MTs). More would have been nice, but I didn't expect huge economy from a
3 ton 4.2l vehicle.
I've just done a 800mile round trip to the lake district from somerset
and have averaged 20mpg all the way- this is at a constant 63mph
indicated (a true 60). Whilst driving up there I noticed a few things- I
don't seem to be getting torque converter lockup- I certainly don't feel
it locking up and the engine revs too high before speed is picked up.
The vehicle is running 2150rpm to maintain a steady 60mph which seems
high to me- to get to 70mph I need almost 3000rpm! Don't forget this is
with oversize tyres too (albeit hard to turn MTs)
There seems to be a lot of drag in the transmission- I don't seem to be
down on power, it just feels like the vehicle is hesitating and being
pulled backwards- it's almost as if I'm pulling a trailer all the time-
vehicle won't accelerate up past 60 as it used to- I have to really
floor it to get it to accelerate. This feels gearbox related- as if the
clutches are engaging when they shouldn't.
A little while ago the Mrs was taking the car to get the Batteries
replaced (a dodgy alternator had destroyed them) when, on a trailing
throttle, the transmission locked up and stalled the vehicle- the o/d
light then started flashing. Unfortunately because the batteries were
then disconnected I never got to find out what the error code was!
What do I do? There is no way I am taking the vehicle to the local
stealer- how often are they going to see and test an old auto anyway?
Are there any tests I can do to ascertain T/C lockup 100%? Is there any
way of resetting the box back to factory defaults in case it's still
carrying a fault? Does anyone know of any LC G/box specialists and how
much I can expect to pay for a proper rebuild (as opposed to a repair)
as well as proper diagnostics?
Vehicle is in need of a C service, but has had fluids and filters
changed in the interim. Wouldn't expect a service to improve economy by
25%! Does anyone have any advice or could I be barking up the wrong tree
completely?