Toyota 4 Runner 3.0 Diesel Turbo Warning light

Hi fella's or font of all knowledge
My first post....Ha ..I've recently got a 3.0 diesel 4 runner
that has had head gasket problems ....... the the head was un repairable and
the cyl on no3 was marked so i went for a secondhand engine ....now it
drives and performs as it should do ...but the turbo pressure warning light
seems to come on infrequently and has a mind of its own ....

where is the sensor could it be faulty or is there another underlying
problem?
the warning light is on with the ignition before starting ..sometimes
goes off after starting then comes back on at odd times?.....any ideas

many thanks
fatjap44

by the way anyone want to buy a 350 BHP Skyline Auto ..its sat in my garage
....done less than a 1000 miles in it this year

"Tim Dent" <fatjap@tiscali.co.uk> wrote in message
news:456e23df$1_4@mk-nntp-2.news.uk.tiscali.com...[color=blue]
> Hi fella's or font of all knowledge
> My first post....Ha ..I've recently got a 3.0 diesel 4 runner
> that has had head gasket problems ....... the the head was un repairable
> and the cyl on no3 was marked so i went for a secondhand engine ....now
> it drives and performs as it should do ...but the turbo pressure warning
> light seems to come on infrequently and has a mind of its own ....
>
> where is the sensor could it be faulty or is there another underlying
> problem?
> the warning light is on with the ignition before starting ..sometimes
> goes off after starting then comes back on at odd times?.....any ideas
>
> many thanks
> fatjap44
>
> by the way anyone want to buy a 350 BHP Skyline Auto ..its sat in my
> garage ...done less than a 1000 miles in it this year[/color]
We do not have diesel 4Runners in the U.S., but warning light principles are
pretty much the same. The proper diagnosis is to use a gauge to measure
actual pressure. If pressure is within specs, then the sensor should be
checked. I would look for the sensor on the output side of the turbo.
--

Ray O
(correct punctuation to reply)