litton wrote:
I'm curious as to how long I can reasonably expect my engine to last before a major malfunction. By now there must be enough history to get some idea of what to look forward to.
This is a 2006 sport with 77,000 which we bought new and is my wife's' driver. I occasionally do full power runs just 'cause I like the way it feels but other than that just normal driving at 85 or so on the hwy. It's never been over 100.
I installed a GDE hot tune at ~38,000 miles and had the timing belt replaced (parts from IDE) and water separator replaced last year. All normal maintenance done on the factory schedule. Aside from that, it's been super reliable with great fuel economy.
Since my wife just loves this little jeep she would like to keep it until the end of days. I, however, am concerned that engine failure could be a significant problem trying to get repaired so sorta thinking ahead as to whether or not to dump it in favor of something less exotic.
Thanks for any advice.
Richard
This is a 2006 sport with 77,000 which we bought new and is my wife's' driver. I occasionally do full power runs just 'cause I like the way it feels but other than that just normal driving at 85 or so on the hwy. It's never been over 100.
I installed a GDE hot tune at ~38,000 miles and had the timing belt replaced (parts from IDE) and water separator replaced last year. All normal maintenance done on the factory schedule. Aside from that, it's been super reliable with great fuel economy.
Since my wife just loves this little jeep she would like to keep it until the end of days. I, however, am concerned that engine failure could be a significant problem trying to get repaired so sorta thinking ahead as to whether or not to dump it in favor of something less exotic.
Thanks for any advice.
Richard
general thoughts on engine longevity:
First and foremost: Disable or totally remove the EGR system, it is an engine killer on this vehicle and will certainly shorten the engine's life and can cause other problems and issues as well!
Second, install an intank or at least an inline fuel lift pump to keep all air out of the fuel system. After you do this, you can also install a secondary 2 micron fuel filter to further protect the very expensive and vulnerable CP3 injection pump and the injectors.
(air in fuel causes lots of issues and can get much worse as vehicle ages)
Third, install a ProVent coalescing filter on the CCV system to help keep oil out of the turbo intake boot, boost hoses, and from contamination and collecting in the bottom of the CCA (intercooler) .
A MUST: Every 100k miles or ~ 6 years, replace the timing belt, timing belt tensioner, timing belt idler pulleys (2 of them), and replace the water pump with a new Graf metal unit like the OEM pump (IDParts.com).
Somewhere just past the 150k miles mark, it is advisable to pull the head and replace all the exhaust *valves and all the valve rocker arms/dampers if they show ANY evidence of wear.
When doing this it is also highly recommended to install ARP Head Studs instead of using the OEM type head bolts when reinstalling the head.
(*these engines have a history of some of them breaking off an exhaust valve usually somewhere above the 150k mileage and when that happens, it causes all kinds of catastrophic damage and in some cases can totally destroy an engine and make it totally unusable. Exact root cause of the valve failures is not known therefore predicting exactly when it will happen is impossible, so replacement is totally a preemptive move for prevention. )
Keeping the oil & filter changed using the correct rated diesel oil and flushing the cooling system good when doing the timing belt changes and using the correct G-05 Hoat antifreeze are also PM musts.
If you do the above, your engine should last a lifetime....
Others on here may have some additional thoughts
in dealing with the VM Motori CRD in the Jeep Liberty, based on my own personal experiences of the last couple years.