- #367 of 559
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Re: Here's one for the experts here [rvenkat]
by nybum
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Mar 17, 2008 (8:14 pm)
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Replying to: rvenkat (May 29, 2007 6:52 am)
Hello I was researching this noise I was having with my I35 and I noticed that you have had the same problem last year... can you please tell me how you solved that issue the rattling noise that comes that you hear when accelerating..... its very annoying and I dont know what to do make it go away... I dont have any service engine soon light on although it was on afew months ago and it went away and when I checked it they said it was the 02 sensor..... any light you might shed on this matter for me would be appreciated....
Thanks
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- #368 of 559
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Re: Here's one for the experts here [nybum]
by rvenkat
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Mar 22, 2008 (7:13 am)
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Replying to: nybum (Mar 17, 2008 8:14 pm)
It was the MAF sensor. It got rid of the annoying, rattling noise and more importantly, the hesitation of the engine, when pressing on the gas sometimes. I didn't have a check engine light for the MAF sensor either. But after I replaced it, it is driving like new. You can get it done real cheap if you buy online (see my previous message) and have a mechanic install it - it should cost only about $50 (45 min) to install. O2 sensors are also cheap to replace if you get them online like eBay. Change them in pairs for each bank. You might not get the labor warranty if you get your own parts but in my opinion, the 50-70% savings is worth the small risk. These are just sensors after all and not a major mechanical component of the car.
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- #369 of 559
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jhayes9835
by jhayes9835
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Mar 22, 2008 (7:58 am)
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I have a 1996 infinity I30. When I accelerate the engine feels like it hesitates and I hear a bit of a backfire. At idle, it feels rough. Once I get up to speed, it runs great. I have a 116,000 on it. Can anyone steer me in the right direction as far as what I need to start looking at? The check engine is not on. Any help would be greatly appreciated. My mechanic wants to go by the process of elimination and that sounds very expensive.
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- #370 of 559
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sluggish performance
by jhayes9835
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Mar 23, 2008 (7:17 am)
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This is what has been done so far. My mechanic changed the plugs, flushed the fuel system and changed the fuel filter. That was a cost of 300.00 and I told him to stop there.
I still have the problem. If you ease into the accelerator, the engine is fine. It is only when you punch it or try to take off quickly when the problem starts. Also, I can feel it hesitating a little when I am going up a bridge (under a slight load). Hopefully this better explains the problem. Your help is greatly appreciated.
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- #371 of 559
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Re: sluggish performance [jhayes9835]
by refugeescamp
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Mar 24, 2008 (7:43 am)
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Replying to: jhayes9835 (Mar 23, 2008 7:17 am)
get a MAF sensor
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- #372 of 559
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Re: sluggish performance [refugeescamp]
by jhayes9835
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Mar 30, 2008 (4:10 am)
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Replying to: refugeescamp (Mar 24, 2008 7:43 am)
I had all six coils replaced, ran good for awile, started running sluggish again. Changed the maf sensor, no improvement. Injectors check out, I had an AIS flush.I am at a loss. What else could be wrong?
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- #373 of 559
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Re: sluggish performance [jhayes9835]
by refugeescamp
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Mar 30, 2008 (2:33 pm)
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Replying to: jhayes9835 (Mar 30, 2008 4:10 am)
have you changed your air filter? check to see if its super dirty, its right above the battery you'll see 2 small clips holding it in place, just pull it back and up. do you have any cracks in your muffler? when you turn your car on and walk behind it do you smell a lot of gas (more than usual)?
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- #374 of 559
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Re: sluggish performance [refugeescamp]
by refugeescamp
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Mar 30, 2008 (2:39 pm)
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Replying to: refugeescamp (Mar 30, 2008 2:33 pm)
even check for bends in the pipe cause if its not complete round the air won't flow smoothly and you'll feel it maybe jerk and that u have to press a bit harder than normal to speed up. If your problem went away when you changed the ignition coils then it could be your spark plugs right under each coil. usually u change those with your iginition coils. do you have a light on in your car? cause if the problem starts with starting your car it could be the flywheel or solenoid or p0355 error code which is a sensor that tells your car how to start it. could be a lot of things man, tell me exactly how your car runs and if it makes a loud noise starting up in the cold after leaving it a whole night. i'll try to find out what the problem is.
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- #375 of 559
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Re: sluggish performance [refugeescamp]
by jhayes9835
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Mar 30, 2008 (3:55 pm)
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Replying to: refugeescamp (Mar 30, 2008 2:39 pm)
I had the plugs replaced, injectors checked, maf replced. There is no exhaust leak and I had the fuel filter replaced when I had the ais flush. There are no codes showing and the car starts up fine. I do not know what else to do or what else to check. Any further help is greatly appreciated.
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- #376 of 559
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Re: sluggish performance [jhayes9835]
by rvenkat
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Apr 01, 2008 (9:26 am)
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Replying to: jhayes9835 (Mar 30, 2008 3:55 pm)
Did you change the air filter with the MAF sensor? Need to put in a factory OEM air filter ($8) with the new MAF. Some bulletins say that after-market air filters still mess up the MAF. I don't believe it but I changed it as I didn't want to take a chance since I spent about $170 on the whole thing.
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