This LRO reader emailed LRO.email@example.com to ask Andrew Varrall about running issues between 2000 and 3000rpm on his 2003 Land Rover Freelander 1 Td4.
My ’03 Freelander Td4 has developed a slight running problem. When driving along on a very light throttle at about 2000-3000rpm, it surges slightly. When driving harder or under load it doesn’t seem to do it.
If idling, it revs freely to 2000rpm then stutters and seems to miss up to 3000rpm with blue, fuel smelling smoke, then it
clears. The only thing I’ve noticed is that in winter the temperature gauge reads slightly lower. There’s only a small puff of smoke on start-up and it always starts first time. It has had a new fuel pump, fuel filter, air filter and modified BMW crankcase breather.
The EGR is blanked off and all pipes appear to be fine.
Trevor Smith,Stoke-On-Trent, Staffs
A few things could be causing this, so it really needs to be diagnosed with a decent diagnostic computer – used by somebody who can reliably read the live data when the engine is running and know what reading to expect. I would expect to either see a fault in one or more of the injectors or unexpected readings on fuel pressure.
This workshop advice appeared in the August 2015 issue of LRO. Back issues are available to download on digital devices here.