Don't like the adverts?  Click here to remove them

Loss of power under hard acceleration

There's probably a manifold pressure sensor ( boost pressure ) that could be giving false readings, I don't know about this model but have experience with general vehicles, might be worth a look, if it was reading too much boot it would put it into limp mode, might be worth a look
 
Hmm, could be a good call silvercruiser. After a bit of reading up, I found this from Oz (https://www.turbochargersplus.com/t...kd-ftv-turbo-actuator-stepper-motor-problems/). If it’s just the sensor and a clean doesn’t improve things, a replacement can be had ( http://www.turbocharger.uk.com/product_p/sensor_land_cruiser_actuator.htm ) More info on sticky vanes here: http://oilybits.blogspot.co.uk/2014/02/fauly-code-p00046-turbo-boost-control.html

Edit: looks like you can get pattern units, no idea on quality though.http://www.ebay.co.uk/itm/Turbochar...:Hilux&hash=item4d3a607b2c:g:NR0AAOSw5VFWLicF
 
Last edited:
Interesting. I wasn't aware the turbos were variable vane so sounds well worth checking whatever actuater operates them. Diaphragm perhaps, vacuum lines, worth checking for holes or leaks as well. The MAP (Manifold Absolute Pressure) sensor may benefit from a clean but is probably fine and is usually a relatively cheap part to swap if in doubt. Swapping briefly with another from a similar vehicle if available would soon rule it out with a diagnostic connected.
 
The turbos on these are variable vane so it is possible the vanes are sticking and causing the overboost.
I have just come back from talking to the mechanic and he believes it is this. There are two spindles inside (I think he said they are nested inside each other but maybe I misunderstood?) and he thinks they have seized and as a result it appears to the ECU that it is over-boosting, and as a result gets flipped into limp mode. If you drive steadily it's fine; he had it charging along at 70 miles an hour without any problems.

He proposes to send the turbo itself for a full service and tidying to a specialist turbocharger firm he uses, which will cost maybe three hundred quid but they do a good job and are speedy. The only problem is that removing the turbo itself is time-consuming, so labour costs will mount up a bit. The suspension coils also need doing.

EDIT Great link! Hopefully this or something like it is what my mechanic's choice of firm will be doing with the turbo once they get their hands on it.

Apart from that and the surface rust underneath (he doesn't think it is structural at this point but it does need a clean) he says it's in good nick and a solid vehicle. I have given him the okay to proceed so now we wait. Thanks everybody for the comments and suggestions. I will report back once I have the vehicle again.

Dan
 
Last edited:
Don't like the adverts?  Click here to remove them
The turbos on these are variable vane so it is possible the vanes are sticking and causing the overboost.
Good morning everybody, just an update on the situation here.

I was out of the country for about three weeks so the garage had ample time to play with it. They did indeed send the turbo off to a specialist and the specialist did indeed find that one of the vanes was seized. The turbo was reconditioned, returned and stuck back in.

As far as I or my mechanics can tell, the problem has been resolved. I went for a decent drive on Saturday, ferrying myself and two other members of family to a wedding. It was about 130 miles there and the same back. I was somewhat apprehensive, given that we have just done some major work on it, but I did want to use the Land Cruiser as the smaller car is noisy and tiring over long distances.

In the event, the Land Cruiser did not miss a beat. Solid, steady and comfortable to drive. My passengers also remarked on the comfort and dozed in their seats in the front and the back respectively.

When I picked the Land Cruiser up after the turbo work the mechanic commented that he felt the steering was a bit notchy so he had lubricated one of the universal joints on the steering column or something like that. It did seem to me that the steering was a bit heavy but that may have been simply because the mechanic mentioned it. Anyway, on the longer drive on Saturday I did not notice it so <shrug>.

Now I really need to get the rust underneath sorted out. I am still looking at Buzzweld but there are no specialists close by and those further away seem to be focused (understandably) on Land Rover models. My local mechanic, the one who did the turbo, also does Waxoyl treatments so I am thinking of asking him to take a look at Buzzweld instead. The problem is that there are so many different options!

After that, I may look at tyres as I am somewhat sceptical of the wet weather performance of the Runway Endurance tyres on there at the moment.

For now at least, the problem that is the title of this thread seems to have been fixed, and for that I thank everybody for their advice. All's well that ends well.

Regards,
Dan
 
I ran Enduro Runway tyres for a number of years and would say they never gave me any cause for concern in the wet. However they did go quite out of round and I had a puncture in one resulting in complete destruction of the tyre (I would expect most tyres to do this in fairness) at 70 on the M62. I can't honestly say that was down to the tyre or indeed what it was down to but there are better tyres out there it has to be said.

Glad your problem is sorted and thanks for posting the result.

On the power steering front, mine began to feel notchy on my 80 which may have a different system to yours. Anyway, a pump overhaul showed a tiny strainer blocked on the unloader, and after the refurb my steering has been a joy. It's now silky smooth. Might be worth looking into. My power steering fluid had become dark and burned smelling which I would say is a symptom of this problem.
 
Glad it's sorted (good spot by silvercruiser !). No experience of Runways, but Tyreleaders have BFG and Coopers. Not so cheap since the £ dropped, but still worth a look.
 
Glad it's sorted (good spot by silvercruiser !). No experience of Runways, but Tyreleaders have BFG and Coopers. Not so cheap since the £ dropped, but still worth a look.
As soon as I can remortgage the house I will look into getting some BFG All Terrain T/A KO2...
 
As soon as I can remortgage the house I will look into getting some BFG All Terrain T/A KO2...
Also had runway enduro on my first 80 fir about 50k miles, they were really good in all conditions. Had notchy steering too which needed newpump and pipes to fix it. Had a £1500 bill at toyota huntingdon for that!!
 
Refurb of your own pump is a morning's work and a seal kit and probably a bit of oil resistant hose is less than £30.
 
No, there's a guide on this forum. Just do a search for power steering pump refurb or such like. It's pretty straight forward.
 
Back
Top