Hi,
I have an auto g35 coupe. Recently I've been hearing some kind of grinding/buzzing noise at 1500-1800 RPMs (accelerating slowly from a full stop) after I have been driving in sit and go traffic for 20 minutes. It happens before I shift to second. I don't really hear it in other gears. I don't hear it until the car has been driven for a while. I especially hear it in my deck garage at work, but maybe that's because it's quiet. The noise lasts for 1-2 seconds. I think it's coming from the engine. Maybe it has something to do with the heat because I just started hearing it in the 95 degree weather. I never hear it on the highway or when I'm at a higher gear. I know that my fan belt is squealing a little bit so I want to get that replaced but don't think it has anything to do with this new sound. Anyone know what it could possibly be? I'm still under warranty and want to take it to a dealer, but I have no idea what to say to them. Any suggestions? Thanks so much
2006-08-03 15:42:07 · 9 answers · asked by matthew k 1 in Cars & Transportation ➔ Maintenance & Repairs
it's an auto...i just know it's going from first to second and i also tried it in steptronic
2006-08-03 16:20:38 · update #1
could be gear sync is out...won't hurt a thing. drove my car for 2-3 yrs like that. tranny still worked fine when i sold it.
2006-08-03 15:45:41 · answer #1 · answered by queeneazy420 3 · 0⤊ 0⤋
Check the heat shields on the exhaust manifold and around the exhaust tubing to see if they are loose, this can cause a tinny, buzzing sound as they resonate with the vibration of the engine.
Update: I tried answering your email, but you have not verified your email with Yahoo, may want to do that. I have owned two Toyota pickups, an 87 and a 92 that both had vibrating heat shields on the exhaust between shifts, that is why I suggested it. A design problem, not loose on these trucks. Under the hood there is a metal cover for each exhaust manifold. On the imports it usually has a hand with a bar through it to show not to touch or an imprint that states HOT!. After the engine cools, check these covers and try to wiggle them, or put your finger under the edge and rake it across the edge, like plucking a guitar string, to see if it makes the same noise that you are hearing, this is a good test. There are also shields wrapped around the exhaust as it travels under the engine, these should be checked as well. Have an assistant rev the engine to the RPM that makes the noise and listen under the hood to try to pinpoint the noise, keep body parts out of the way! You know you can reproduce the noise, that is important in trying to find it. May have to visit a dealer and let them hear it.
2006-08-03 15:46:09 · answer #2 · answered by yugie29 6 · 0⤊ 0⤋
From your description it sounds like you could have either a loose exhaust heat shield or even a catalytic convertor that has the substrate (the guts of the convertor) material loose inside it. Let the car exhaust cool down and lay on your side and reach under the car and wiggle or tap on the convertor and see if you hear a rattle. I know sometimes it,s hard to reach under the car but from your description that kind of sounds like what the problem could be. Good luck and don,t get burned.
2006-08-03 16:25:36 · answer #3 · answered by Iknowthisone 7 · 0⤊ 0⤋
the syncronizers in the tranny are prob going out. it makes it a pain but it should still work for a while. what will really make it a pain is when you have to come to a complete stop to shift down into first gear. three ideas. get a new tranny, get the on you have fixed, drive it like it is
2006-08-04 04:06:49 · answer #4 · answered by swanky 1 · 0⤊ 1⤋
I think you should buy a new car. Once a car starts to have problems it all goes downhill from there. When you take the car to the dealer one prob is fixed and another one created. That is what happened to my corolla and navigator. Just get a new car.
2006-08-03 16:11:14 · answer #5 · answered by me'-chelle 1 · 0⤊ 0⤋
When you take it to a dealer tell the service guys that you want to test drive it with mechanic to duplicate this noise - it's common practice. Drive it with the mechanic - if you can duplicate the noise and he can actually hear it, they must fix it. If they won't fix it, drive it with the service adviser or service manager - they will fix it for sure.
2006-08-03 15:56:42 · answer #6 · answered by svthech 4 · 0⤊ 0⤋
If you can't find it, grind it. ;) Uhm...let's see here..trrry to go straight to third gear straight from first and say what happens.
2006-08-03 15:45:36 · answer #7 · answered by Red-Sox 2 · 0⤊ 0⤋
Push the clutch in all the way !
2006-08-03 16:15:15 · answer #8 · answered by Terry S 5 · 0⤊ 0⤋
better invest in a new tranny
2006-08-03 15:45:29 · answer #9 · answered by cwb63ss 6 · 0⤊ 0⤋