whats that noise?
07-13-2007, 04:44 PM
#1
2nd Gear Member
Thread Starter
Join Date: Jun 2006
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Posts: 378
whats that noise?
so i have a question... i have a 5spd and when i shift from second to third and third to fourth esp i hear a strange noise that sounds almost like a blow off valve on a turbo. anyone know what that is? i can make it do it when i shift any gear if i throw the clutch out quickly and nail the gas
07-13-2007, 04:57 PM
#2
2nd Gear Member
Join Date: Jun 2007
Posts: 435
RE: whats that noise?
I have the exact same problem. It started after I had the car for about 1000 miles. Also, if the car is in neutral and I let out the clutch, it makes the same noise. Kind of like stirring crushed ice, but at a very low volume. Some people have suggested it's a bad throwout bearing in the clutch. I'm taking it in tomorrow morning to have it checked out. I'll let you know what they say.
07-13-2007, 06:34 PM
#3
4th Gear Member
Join Date: May 2006
Location: Nutley NJ
Posts: 1,207
RE: whats that noise?
ORIGINAL: Charlie321
I have the exact same problem. It started after I had the car for about 1000 miles. Also, if the car is in neutral and I let out the clutch, it makes the same noise. Kind of like stirring crushed ice, but at a very low volume. Some people have suggested it's a bad throwout bearing in the clutch. I'm taking it in tomorrow morning to have it checked out. I'll let you know what they say.
I have the exact same problem. It started after I had the car for about 1000 miles. Also, if the car is in neutral and I let out the clutch, it makes the same noise. Kind of like stirring crushed ice, but at a very low volume. Some people have suggested it's a bad throwout bearing in the clutch. I'm taking it in tomorrow morning to have it checked out. I'll let you know what they say.
07-15-2007, 11:41 PM
#8
2nd Gear Member
Join Date: Jun 2007
Posts: 435
RE: whats that noise?
So I got it checked out and they said the noise was the result of "gear rollover". Apparently, this is common on some of the Tremec trannies and is suffered by owners of some Corvettes, Mazda Miatas, RX8s, and Ford Focuses. There's a Service Bulletin documenting it. I refused to leave unless they at least checked the transmission oil for metal shavings. They changed the oil while they were at it, just to see if it would have any effect. It did. The noise is much diminished now. I then picked up some Dynamat and covered the transmission tunnel. The new oil and the Dynamat really helped a lot. The transmission sounds tolerable now. The guy did mention to be careful with synthetic oils. Lower viscosity will diminish gear rollover, but will also diminish the life of the syncros.
So long story short, the problem seems normal, and there are a few things you can do to mitigate the noise, but there isn't much you can do to eliminate it, unless you're willing to risk a lower viscosity oil.
So long story short, the problem seems normal, and there are a few things you can do to mitigate the noise, but there isn't much you can do to eliminate it, unless you're willing to risk a lower viscosity oil.
07-16-2007, 08:53 AM
#9
2nd Gear Member
Join Date: Dec 2006
Location: Boise, Idaho
Posts: 278
RE: whats that noise?
but there isn't much you can do to eliminate it, unless you're willing to risk a lower viscosity oil.
07-16-2007, 09:33 AM
#10
2nd Gear Member
Join Date: Jun 2007
Posts: 435
RE: whats that noise?
ORIGINAL: billybix76
S"funny but thats what I did. After talking to my Ford engineer friend He said he uses Royal Purple Synchromax. Says it is not Lower viscosisty just better lubricant. I have been running RP in my T-5 for 6 Months and It is much quieter and no gear rollover noise at all. IMO its not a risk at all to use a higher quality multi-viscocity tranny fluid to solve gear noise and provide much smoother shifts and better syncro function...
but there isn't much you can do to eliminate it, unless you're willing to risk a lower viscosity oil.
