punkassmofo
New Member
- Posts
- 19
- Location
- Rossendale
Hi, yesterday the idle on my p48 4.0 96 suddenly went up to 1500rpm. When in D its normal, but as soon as I put it in P or N it goes up - any idea?
Idle Speed
- Thread starter punkassmofo
- Start date
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- Posts
- 58,170
- Location
- Preston Lancs.
Clean your idle control valve.
rojbarker
New Member
- Posts
- 544
- Location
- Handover, 'Ampshire
I'd also check for loose vacuum pipes in case ones dropped off.
punkassmofo
New Member
- Posts
- 19
- Location
- Rossendale
My Air filter is bollixed, could it be that?
- Posts
- 58,170
- Location
- Preston Lancs.
It won't be helping.
ssmn1234
Active Member
- Posts
- 691
- Location
- Cairns, Australia.
could be filter, but I believe rojbarker is correct, check all the vacuum lines, they have a habit of developing split ends, and replace the filter ya tight bugger.
punkassmofo
New Member
- Posts
- 19
- Location
- Rossendale
Right - air filter changed, what and where are the vac pipes I need to look at?
fett
Well-Known Member
- Posts
- 8,637
- Location
- South Hampshire
try the tps too.
rojbarker
New Member
- Posts
- 544
- Location
- Handover, 'Ampshire
I've googled vacuum line routing for 4.0 range rover but there's no pictures. Maybe someone on here has a haynes or other manual they can scan the page in for you. In the meantime, they are normally small black rubber or plastic pipes, about the thickness od drinking straws. They will be a multitude of places but all will start off from the intake plenum and throttle body area.
MajSkollie
New Member
- Posts
- 46
- Location
- Namibia
Had similar problem, ended up being the TPS that was faulty.
fett
Well-Known Member
- Posts
- 8,637
- Location
- South Hampshire
They can cause more trouble than you think , spent all weekend swapping bits :doh:
