Moderator: volvite
smj999smj wrote:It would be helpful to get a scantool look at the fuel trim and MAS input. You could try cleaning the MAS hotwire. Camshaft position sensors can sometimes become faulty and not always throw a code, but I'd hate to see you spend more money replace them and not have it fix the problem. Viewing the spark patterns on an oscilloscope would also be helpful, of course, most DIY'ers don't usually have access to that kind of equipment. You could also try cleaning up the EGI grounds, which wouldn't cost anything. On the VQ40DE, they are on the front timing cover on the driver's side, but I'm not sure if they are in the same place on the VQ35DE? There would be two 10MM head bolts with a number of black wires going to them.
There's got to be something wrong... how could you explain that during 15 years (86.000 miles) car behaved correctly and all of a sudden, this starts happening? There's got to be something wrong causing this!palmerwmd wrote:It seems like you are spending a lot of money on an issue that just might not be one...
Well with that history thats something else. I had a VQ35 that did have a slight stumble/misfire literally off the showroom floor.r50pathcr wrote:There's got to be something wrong... how could you explain that during 15 years (86.000 miles) car behaved correctly and all of a sudden, this starts happening? There's got to be something wrong causing this!palmerwmd wrote:It seems like you are spending a lot of money on an issue that just might not be one...