Is this banging sound from the transmission normal (VIDEO INCLUDED!)
#46
Your reasoning makes sense to me. And I know it's correct because I have the mileage to prove it; I won't attempt to rationalize or prove it to someone who doesn't want to believe it. I know for a fact that you'll burn much more gas lagging the engine at low speed in a gear than accelerating smoothly through the gear and shifting to the next one. I'm not the one getting 14 MPG so I presume I must be doing something correctly. Just as I mentioned, I'm not generally flooring it through the gear to get to 4-5k, but accelerating smoothly. Works for me and I think I'm getting better mileage than the average user here has posted so I'm happy. My clutch noise is generally when I'm going slowly and not at high enough RPM to be shifting to the next gear.
With that said, my getting 14mpg has nothing to do with me not revving it out. It has to do with my driving consisting of 100% stop and go city driving and my lead foot. I enjoy romping on the car quite often, and when you are red line shifting it and chirping second once a day, you aren't going to get 17mpg city.
You can also shift at 3-4k and get great mileage, and I would be willing to bet the mileage you get when shifting at 3k-4k, is the same if not slightly better then shifting at 5k-6k. So don't go thinking you've just found some miracle cure for low MPG's....
When I first got my car I only got 21mpg on a 100% highway drive back home ( 300 mile trip ). I've not driven highway since then, but I had a post noting I was getting what seemed to be 5-6mpg lower then others, but was told it was probably due to breakin. I'll test this out sometime but as of yet I've not had the chance to run the car on the highway and see what its getting now. I don't know why my car would be any different, but there could be a sensor that is off or something.
#47
Just a quick update:
The dealer of course said everything as completely normal.... Infiniti corporate wanted me to take it to another dealer, but when I called the other nearest dealer, they told me they only would look at it between 9-3 mon-fri, because I need to show them the issue I'm having. I'm 60 miles from them at the current site I'm working at, so I just can't go for the next few weeks.
BUT, I did get a call from the original dealer, and they're going to have an Infiniti engineer come in for something else on the 10th, and they'd like me to bring my car back in so he can look at it as well.
Hopefully they'll give me a loaner wed. evening and I'll be able to leave it there for them.
Keep ya posted ( what a great pun )!
The dealer of course said everything as completely normal.... Infiniti corporate wanted me to take it to another dealer, but when I called the other nearest dealer, they told me they only would look at it between 9-3 mon-fri, because I need to show them the issue I'm having. I'm 60 miles from them at the current site I'm working at, so I just can't go for the next few weeks.
BUT, I did get a call from the original dealer, and they're going to have an Infiniti engineer come in for something else on the 10th, and they'd like me to bring my car back in so he can look at it as well.
Hopefully they'll give me a loaner wed. evening and I'll be able to leave it there for them.
Keep ya posted ( what a great pun )!
#49
Lexus Defector
iTrader: (60)
However, only 21 MPG on a 300 mile highway trip doesn't sound right unless you were really hauling butt. I just went to Dallas and back on Tuesday. 574.4 miles round trip, 60.8 MPH average speed, 24.2 MPG. In a 6MT with cruise set at 75 MPH in the city and 79 MPH on the interstate. Very little traffic at 2 AM.
#50
I get 20 MPG running 85-90mph on a 300 mile trip, so his #'s sound right to me.
What city is this!? I'm guessing you're still on the highway, inside city limits? Either that or you've got one of those nifty devices that can change stop lights
In a 6MT with cruise set at 75 MPH in the city
#51
^^^^ LOL
Yeah that makes more sense about your MPG now. I'd say I averaged 80-85mph and was on the first tank of gas, I imagine its better now. So I didn't know it would make that big of a difference in MPG from 75mph to 85mph. So If i go steady 75mph I may see mid 20's for mpg? Thats nice, maybe I'll do that next time around. Thing is I pretty much never need to drive more then 5 miles in any direction where I live.
Yeah that makes more sense about your MPG now. I'd say I averaged 80-85mph and was on the first tank of gas, I imagine its better now. So I didn't know it would make that big of a difference in MPG from 75mph to 85mph. So If i go steady 75mph I may see mid 20's for mpg? Thats nice, maybe I'll do that next time around. Thing is I pretty much never need to drive more then 5 miles in any direction where I live.
#52
Lexus Defector
iTrader: (60)
And yes, I used to have one of those nifty devices but only used it once for fear of causing a crash that might hurt someone just to get somewhere 2 minutes faster. Plus it wasn't legal for me to have/use it. Got scared and gave it back.
Thread
Thread Starter
Forum
Replies
Last Post
ScrewstonNismo
Brakes & Suspension
15
02-13-2022 12:39 AM
Badgerman
Engine, Drivetrain & Forced-Induction
2
08-19-2015 02:26 PM
banging, chatter, clutch, disengaging, dy, dyscrepency, g37, hammering, infiniti, manual, noise, normal, sound, throttle, transmission