down on power?

[timholmes61]

Having just had all my overheating problems sorted out (phew!) I have been given the truck a good test on the motorway.

But when on motorway at 70-80 and I hit a hill it really seems to struggle to maintain that speed. In fact it shifts down almost straight away and even then I was foot to the floor and only just keeping 55-60 mph. The hill wasn't too steep.

I had a 3.0l a few years ago, albeit, with far fewer miles on it and I can't remember it ever wanting for power and I thought motorway cruising was easy. I may be remembering wrong but is this normal for one of these or does anyone think I have a problem?

On the flat or around town there doesn't seem anything wrong and there's no smoke at all out the back.

[biosurf]

When did you last change the fuel filter?

[timholmes61]

Full oil and filter service was done in April (about 1500 miles ago).

Also ATF fluid done a couple of weeks ago. I was wandering whether it could be something to do with the torque converter as the engine revs freely and smoothly. No signs of lack of fuel or rough running.

Maybe there's nothing wrong but doesn't seem quite right for a 3.0l. Could putting a load of redex (or similar) help with this type of thing?

[Apache]

Check the turbo boost sensor pipe hasn't come adrift. Very very common and gives the symptoms you describe.

Use the search facility to find out how to locate it.

[timholmes61]

I've had a look a found a few bits about it but mostly relating to the 2.4.

Am I right in thinking the sensor is next to the air intake. and there should be a vac pipe going from there to the engine somewhere? Is there anything else I should also check?

[wiggy]

http://www.hiluxsurf.co.uk/forums/at...0&d=1210709050 think this is the one you are looking for marked in red......cant remember if this is the one for the 2.4 but should be around the same bit i think....tried a diagnostics test yet?

[timholmes61]

No I haven't done any tests as I wasn't sure there was a problem. I've been taking it easy as it was overheating and only got that fixed a few days ago. So the lack of power has only become obvious now I'm driving it properly.

I thought the J shaped pipe was on the 2.4 as the sensor is in a different place but I maybe wrong. I'll have a check tonight.

[wiggy]

No I haven't done any tests as I wasn't sure there was a problem. I've been taking it easy as it was overheating and only got that fixed a few days ago. So the lack of power has only become obvious now I'm driving it properly.

I thought the J shaped pipe was on the 2.4 as the sensor is in a different place but I maybe wrong. I'll have a check tonight.

Aye just been thinking and sorry might have got the wrong diagram (have to clear out the pc ) worth a check anyhow but it does sound like there is something up with it.

[Apache]

I cant remember where it was on the 3.0 I had, other than on the right side of the block (looking from the front)!

Happened to me, and I certainly wasn't the first!

[timholmes61]

I had a look last night but I couldn't see anything that looked similar to the photos. quite confused now. There was no sensor or pipe going near the air intake. loads of pipes and plugs around the right side of the block but I've got no idea what i'm looking for.

Does has anyone have a photo of their 3.0l engine that show which hose(s) I should be looking for?

Sorry for being such a novice!

[wiggy]

Sorry at work at the moment so no pics.... just thinking though is the boost sensor connected? and was the ecu re-set after you had the work done it?

These will be of help as the manual should have the exploded diagrams that you are after

http://daemon4x4.org/portal/downloads.php

http://daemon4x4.org/tech/hiluxsurf/info/

http://www.hiluxsurf.co.uk/forums/sh...ht=vacuum+hose

Rob

[Apache]

My money is on the vac pipe at the boost sensor. There's nothing on the air filter housing / pipe that would explain a big loss of power.

This is it on the 3.0. Not sure if its in the same place on a 2.4. The bit on the right is the boost sensor. The pipe broke off it.

[timholmes61]

So is that quite far down the engine? As in not right up near the intake manifold?

I just want to know exactly where to look as there are so many bits of piping around there.

[timholmes61]

wiggy, I don't know if the ecu was reset but I don't think anything was done that would require that. It was all mechanical stuff. I guess they could have knocked off a pipe of sensor. I'm sure I heard the turbo spinning up last week so would have had to happed when changing the rad and visco fan.

I haven't been getting any fault codes so does that mean it is not in limp home mode?

[Apache]

Its fairly high up, yes. Just look for the sensor. There should be a vac pipe connected to it. It gets oily and pops off, or the plastic pipe the hose connects to cracks / breaks off as its a bit fragile. Anyway, while you're there, check all vac pipes you can find for splits, perishing etc.

You dont get any error codes from it as the sensor is still working, its just not 'seeing' boost.