by V11NEJ on Fri, 01 Nov 2013 7:02 +0000
I have a 2013 euro 5 hi lux for two months now. I formerly had a 2010 truck for three years.
The new truck is a noisey machine by comparison. Injector rattle! Driving me mad!
Very dissapionted with this as I gave back a a brilliant machine that never troubled me once
The new truck seems to rattle worse once its heated up and heat soaked in traffic, at which point it is very loud, particularly on small throttle openings in busy city queues. Almost hammering sound
If you use more throttle it goes away instantly
The weather is getting colder here now, and yesterday, our coldest day yet, there was no noise at all after 20 miles of motorway followed by twenty mins of city queuing. I was delighted, but I knew it was temporary, as I have experienced this with it before.
I parked it up outside a clients house for two hours, jumped back in it,fired it up, and sure enough the death rattle was back?
So the temperature definatly effects the issue. I noticed this car has a fuel cooler fitted in the fuel line between the tank and the pump' don't remember my old car having that?
Is the temp the engine is running at too hot for quite running injector fuel trim?
If the engine stat was changed for a cooler running version, would this stop the changeable problem.?
As the fuel not used gets returned to the tank having passed through the fuel rail, is the temp of the diesel on the up and up the whole time. Did Toyota realise this was an issue hence the fuel cooler, that didn't fix the problem.!
In a bid to sort this, I tried using a chip express unit, which has up d the power smoothness and economy, but sadly made no difference to the warm up rattle
This little box I've fitted, I believe increases the fuel pressure in the rail on demand for more torque and power, but has no effect on the low end demands you make of the motor. So more pressure has not fixed the issue, or made it worse it has to be said
Having examined this for some months now, I still think its a temperature issue.
Keep it cool, and the noise is gone? Yet others report the opposite
I've asked the dealer to help but they just don't give a s.....t! They are useless
I read on a forum that you can have a dealer who cares? (Not mine!) perform a pilot learn injector reprogram and this makes all noise issues go away. I would like to believe this possible. I've also learned that the fuel trim for the injectors has a set of software parameters that the ecu reports as normal or otherwise, and can be adjusted.
Do these dealers really know enough to sort issues like this I wonder?
I'm clutching at straws trying to work this problem out really
In summation, I'd put my money on computer programming sorting it out? As these injectors are totally controlled by the ecu, but is the program wrong? We all have no chance of a mechanic in a dealers look deeper than plug in factory soft ware, and it says all is good
Has any of you cured this aggravating issue on a 2013 euro 5 hi lux
Aaaaarrrrrrgh!
I rolled over and they went away 
Then came the talk of the ''magic button", and what do ya no. 2012 sr xtra cab . No button 
. Not because there too bloody cheap to put one in , or that i didn't buy a "5", but because it is now automatic 
as soon as i start her up cold she automatically revs higher, bit like an automatic choke on pre injection cars (for all the whipper snappers out there).
