Good luck with your battle with Nissan NFSPD. I've heard of this issue before and have a hard time seeing why Nissan would not be willing to help you out with it (aside from obvious money savings on their part). Did you have the Pathy dealer maintained regularly? If you did, I'd say that makes a strong case in your favor, since it's something THEY should have caught in the process.
02QX4ME wrote:I think I happened to have read all the good things about this engine. Well, I also think I need to keep crossing my fingers really tight...
By the way, my RX300 engine is much smoother than this VQ. Probably also due to better insulation and some other factors, at freeway speed, I don't hear any engine sound in RX300. Why I haven't heard any rating of it?
Are honestly complaining that a utility SUV has a harsher engine than a Luxury SUV? Even if it was true (which it isn't, more on that in a minute), that's a pretty harsh comparison. I certainly wouldn't go around complaining that my pickup truck has a harsher ride than my Cadillac (a much more exaggerated unfairness, but a good example).
You've pretty much hit the nail on the head: the reason for the difference is due to the Lexus' heavier sound insulation and stronger luxury focus.
Go drive a Camry with the 3.0. You'll quickly find that the motor isn't quite as smooth as your RX leads you to believe.There's also the difference in power between the motors: 220 for the RX, 250 for the Pathfinder.And there's the difference in purpose between the two cars. Even though the 2nd gen Pathfinder is TECHNICALLY a car (unibody, not body-on-frame) like the RX, it has a lot of "truck" in it's purpose--far more than the RX. Simply due to that, it's going to be a little less luxurious (and will also beat the snot out of the RX once the pavement is left behind).
The reason you haven't seen any ratings of the 3.0 in the RX is because it is, by it's very essence, a completely AVERAGE motor, with nothing outstanding about it. It does it's job well, and is certainly not a poor powerplant, but there's nothing particularly noteworthy about it. It may be reliable, but it doesn't offer the superb package the VQ does: broad torque and horsepower bands, smooth revving, great response, good fuel economy, tremendous reliability, a wonderful exhaust note...Also, the intake screw issue is not really an issue with the VQ, but an issue with the pathfinder intake. Of course, that doesn't make it any less severe an issue, but look at how many other Nissan models (both front and rear drive) use and have used the motor for years upon years with extremely positive results.
Don't take my comments personally, though...I mean no offense, nor am I trying to compare the RX and the Pathfinder. I just hate to see vague misconceptions drawn from vague generalizations.
I should add, though, that the Toyota 3.0 IS a pretty smooth V6 when compared to the huge wealth of other cometitors out there, especially the American ones. But I definitely can't say it's smoother than the VQ. Consecutive drives in a 3.0 Camry and VQ-powered Maxima tell me otherwise.