2007 & 2009 KW 900's

07 trucks do not have dpfs make sure it doesn't. Those trucks would be most desirable. The 08s and 09s are all crap. And should be avoided at all costs........


And yes emissions are the main problem.

 

The most desirable trucks are Pre-Egr Trucks, before 2003, even though the later DEF Model Year trucks have less problems, they still have problems and the Engines don't last, and Replacement Emission Parts and Turbos are pricey.

 

'The question was 07s 08s and 09s and the sevens are most desirable. Out of that pile of crap....

 

08-10 are the lemon years. Buy one of these and it will be to your sorrow.

 

It was the years of EGR (exhaust gas recirculation) + DPF (diesel particulate filter). EGR had been on motors since '03 and up to '07 in order to reduce emissions. They hurt fuel economy and are/were a pain but can be blocked off removed or even maintained more or less and the engines are not real bad. Still preferable to have a pre-emissions enigine older than a 2003 because they didn't have EGR and until recently were the zenith of diesel engine efficiency.

The DPF is a filter on the exhaust system. Basically a big muffler that catches soot from the exhaust. It burns this soot off at high temperatures and also utilizes a type of injector that squirts diesel fuel into it to help burn off the soot. These are trouble prone and cause all sorts of problems. Basically you cannot idle these DPF trucks for any extended period of time as it clogs up the DPF and causes check lights, derates, and all sorts of expensive problems. This system was basically beta tested on unsuspecting trucking companies during these years due to EPA mandates. Really wasn't the manufacturers fault they did the best they could in the time frame they had. But these trucks have broken more bank accounts than you could ever imagine. Of course the big companies felt a little pain but they put a lot of small operations out of business due to excessive downtime and expensive repair bills.

The 2011 and newer trucks have EGR + DPF + SCR. Can't remember what SCR stands for but it's basically aftertreatment system of the exhaust where urea is injected into the gases to reduce NOX emissions. These trucks were somewhat more reliable than the EGR + DPF trucks and are improving every year. But still trouble prone and if you want to have check codes let one of the idle for an extended period and you will get them.

So from 2008 into the present if you run over the road an APU is mandatory because you cannot idle those trucks. They are full of expensive treatment systems and components that will cost you dearly when they go into the shop if you're not going to do the work yourself. People have been warned here time and time again to not buy trucks from 2008-2010 range but they do and learn the hard way how big of a mistake it is. Really the dealers can't give these years away. The only people buying them are getting suckered in on what appears to be a decent price only to realize later after the $10,000 shop bills what a huge mistake they made.

There have been all sorts of lawsuits stuff all over the internet about this. Do not buy one of these trucks. If you must have a W900 buy a 2002 or older unti. Or if you are wealthy go and have a brand new glider W900 put together with a reman pre-emissions engine. But save yourself some trouble with any 2008-2010 models they can't give those trucks away is why you see so many. The former owners are all broke or just happy to be rid of them.

 

All models have the same problems...