This is a friend of mines post from another forum...need some help

VanWilder · October 31st, 2009, 03:55 PM

"Hey guys,

So I took my car to the track after getting my mutha thumpr's put in and my 4:10's to see how the car ran. Well, long story short, I accidentally slammed the car from from 3 to 2 at wot and 6500 rpm's and now my car is whining when my foot is not on the gas. It still whines when the car is in neutral as well while coasting. The tranny lets me go into each gear without any trouble and it shifts normally. Any help on the situation is appreciated. Obviously, I am taking the car in next week to have it looked at, but I was wondering what some people thought it might be. My two guesses are either the tranny or the gears or differential My questions are:

1. If the tranny was hurt, would there still be whining in neutral?
2. Could this be the differential or the gears?
3. Is there any chance I got lucky and the gears might need to be re-shimmed?

Just to clarify, there is no whining when I am on the gas. It only occurs when I am out of the gas in all gears and in neutral as well.

The car does not whine at all when it is not moving. The whining noise is still present if you are going at a set speed and put the car in neutral. You can hear the whining stop as I slow down to a complete stop. I just hope it is something in the rear and not the tranny. The noise seems to go away when the car is under load, acceleration seems to be normal and the clutch is not slipping at all."

BTW his car is a 2007 GT/CS 5-speed with the same mods as me minus the Mickeys

Any help diagnosing would be greatly appreciated...Thanks

Imran · October 31st, 2009, 03:59 PM

i'd say gears.

07stanggt · October 31st, 2009, 04:00 PM

well he's lucky either way really. You can pick up a new take off 3650 for $600 Hell its less then a ring and pinion swap.

My bet would be the rear.

07 STROKER · October 31st, 2009, 04:26 PM

driveshaft, gears, axels, everything took a shock load....good luck

Anthony05GT · October 31st, 2009, 04:35 PM

Sounds like the ring and pinion.

DiMora · October 31st, 2009, 04:41 PM

Wow...that is not good...but again, he may be VERY lucky. Maybe the clutch slipped or something...or something gave up in the rear end...or the tires broke loose.

Did the car over-rev?, ie did he let the clutch out as he slammed it into second and bury the RPM's like to 7,8 or 9,000 RPM? I don't have experience with an over-revved Mustang, so I don't know what the damage typically is...one some cars the valve springs cannot provide adequate pressure to keep them opening and closing fast enough at that high an RPM so the pistons will slam into the valves...causing significant damage or sometimes total destruction (IE E36 BMW M3). I don't know if the Mustang has an "interference" design like that on the piston/valve interface. If it does, I am hoping the whining is because something else gave way - like the rear end, clutch, or tranny.

I would try to isolate where the sound is coming from.

A boroscope into a spark-plug hole may reveal piston / valve damage...if there is one that can work on a Mustang...and a compression check would be a good idea. Does the car whine if revved in neutral with the clutch in? Any smoking? How's oil pressure? Does the whining increase with tight turns in a parking lot?

07 STROKER · October 31st, 2009, 04:41 PM

im going with the axles are bent.

DiMora · October 31st, 2009, 04:42 PM

Oh, and tell him to buy an MGW shifter.

07 STROKER · October 31st, 2009, 04:43 PM

Any aftermarket shifter will hell with the 3rd to 2nd problem

07 STROKER · October 31st, 2009, 04:44 PM

time to post a vid.....

07 STROKER · October 31st, 2009, 04:46 PM

YouTube - 3rd to second

07stanggt · October 31st, 2009, 05:03 PM

Ghostrider when you are done raining down your wisdom give me a call.

VanWilder · October 31st, 2009, 05:24 PM

Originally Posted by DiMora

Wow...that is not good...but again, he may be VERY lucky. Maybe the clutch slipped or something...or something gave up in the rear end...or the tires broke loose.

Did the car over-rev?, ie did he let the clutch out as he slammed it into second and bury the RPM's like to 7,8 or 9,000 RPM? I don't have experience with an over-revved Mustang, so I don't know what the damage typically is...one some cars the valve springs cannot provide adequate pressure to keep them opening and closing fast enough at that high an RPM so the pistons will slam into the valves...causing significant damage or sometimes total destruction (IE E36 BMW M3). I don't know if the Mustang has an "interference" design like that on the piston/valve interface. If it does, I am hoping the whining is because something else gave way - like the rear end, clutch, or tranny.

I would try to isolate where the sound is coming from.

A boroscope into a spark-plug hole may reveal piston / valve damage...if there is one that can work on a Mustang...and a compression check would be a good idea. Does the car whine if revved in neutral with the clutch in? Any smoking? How's oil pressure? Does the whining increase with tight turns in a parking lot?

it only whines when in gear and foot off the gas...either while coasting in neutral or everytime he just lets off the gas...does not whine at idle or when revved if car is sitting still only while coasting or driving

07 STROKER · October 31st, 2009, 05:56 PM

Originally Posted by 07stanggt

Ghostrider when you are done raining down your wisdom give me a call.

im just showing im human...unlike you superman.

VanWilder · October 31st, 2009, 06:00 PM

Originally Posted by 07 STROKER

Any aftermarket shifter will hell with the 3rd to 2nd problem

he actually has the steeda tri-ax

07 STROKER · October 31st, 2009, 06:16 PM

hmm, never felt a steeda, does it have a centering spring?

VanWilder · October 31st, 2009, 06:19 PM

Originally Posted by 07 STROKER

hmm, never felt a steeda, does it have a centering spring?

I dunno Im not real sure on that one...

DiMora · October 31st, 2009, 06:26 PM

Originally Posted by VanWilder

it only whines when in gear and foot off the gas...either while coasting in neutral or everytime he just lets off the gas...does not whine at idle or when revved if car is sitting still only while coasting or driving

That actually sounds pretty promising to me. In other words, it is not an engine sound...so that kind of narrows it down to transmission, clutch, or rear end.

I'd start with the rear end next. Maybe go to a parking lot and have a friend sit in the trunk and drive around at low speed and listen? Or pull the rear seat down and have someone sit back there and stick their ear over the rear diff area.

You may have to get a trunk-monkey.

If it coming from there pull the rear end apart.

07 STROKER · October 31st, 2009, 06:32 PM

my gears started howling right after that 3rd to 2nd shift...turn up the sound on my vid and you can hear it...i went in and had new gears put in under warrenty. there is a TSB for gear while on he 07's so i got lucky

VanWilder · October 31st, 2009, 06:41 PM

Originally Posted by DiMora

That actually sounds pretty promising to me. In other words, it is not an engine sound...so that kind of narrows it down to transmission, clutch, or rear end.

I'd start with the rear end next. Maybe go to a parking lot and have a friend sit in the trunk and drive around at low speed and listen? Or pull the rear seat down and have someone sit back there and stick their ear over the rear diff area.

You may have to get a trunk-monkey.

If it coming from there pull the rear end apart.

yeah he's takin it in to the place that installed his gears sometime soon to have them take a look at it to see if its back there

Originally Posted by 07 STROKER

my gears started howling right after that 3rd to 2nd shift...turn up the sound on my vid and you can hear it...i went in and had new gears put in under warrenty. there is a TSB for gear while on he 07's so i got lucky

unfortunatly he put 4.10s in so no more warrenty

October 31st, 2009, 03:55 PM	#1
VanWilder Regular 2005 Mustang GT 12.41@107.89 Join Date: May 2009 Location: Springfield, MO Posts: 140 iTrader: 0 reviews	This is a friend of mines post from another forum...need some help "Hey guys, So I took my car to the track after getting my mutha thumpr's put in and my 4:10's to see how the car ran. Well, long story short, I accidentally slammed the car from from 3 to 2 at wot and 6500 rpm's and now my car is whining when my foot is not on the gas. It still whines when the car is in neutral as well while coasting. The tranny lets me go into each gear without any trouble and it shifts normally. Any help on the situation is appreciated. Obviously, I am taking the car in next week to have it looked at, but I was wondering what some people thought it might be. My two guesses are either the tranny or the gears or differential My questions are: 1. If the tranny was hurt, would there still be whining in neutral? 2. Could this be the differential or the gears? 3. Is there any chance I got lucky and the gears might need to be re-shimmed? Just to clarify, there is no whining when I am on the gas. It only occurs when I am out of the gas in all gears and in neutral as well. The car does not whine at all when it is not moving. The whining noise is still present if you are going at a set speed and put the car in neutral. You can hear the whining stop as I slow down to a complete stop. I just hope it is something in the rear and not the tranny. The noise seems to go away when the car is under load, acceleration seems to be normal and the clutch is not slipping at all." BTW his car is a 2007 GT/CS 5-speed with the same mods as me minus the Mickeys Any help diagnosing would be greatly appreciated...Thanks __________________ 2005 Mustang GT 5-speed JLT CAI w/ Tillman Speed 93 All-Out tune, Flowmaster, BMR Springs, E/T Streets, JBA LT Headers, O/R H-Pipe, FRPP 4.10 gears, Mutha Thumpr cams w/ phaser limiters, & CMVC Delete Plates 12.41 @ 107.89 NA 11.81 @ 113.44 N2O

October 31st, 2009, 03:59 PM	#2
Imran :) 01 Join Date: Dec 2007 Posts: 10,795 iTrader: 1 reviews	i'd say gears. __________________

October 31st, 2009, 04:26 PM	#4
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	driveshaft, gears, axels, everything took a shock load....good luck __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

October 31st, 2009, 04:35 PM	#5
Anthony05GT Hardcore Enthusiast Join Date: Feb 2009 Posts: 1,462 iTrader: 1 reviews	Sounds like the ring and pinion. __________________ JDM 302 Stroker, Whipple 10 rib 12 psi, L&M, JBA, J&M, LFP, Corsa, BBR Stage II cams, Manley, MGW, McLeod RST, Metco, Steeda, Autometer, CDC, Street Scene, SOS, Tuned at JPC Racing by Kevin MacDonald

October 31st, 2009, 04:41 PM	#6
DiMora More Is Better. 2006 Roush Stage 1 Blown Join Date: Mar 2009 Location: Acworth, GA Posts: 2,911 iTrader: 1 reviews	Wow...that is not good...but again, he may be VERY lucky. Maybe the clutch slipped or something...or something gave up in the rear end...or the tires broke loose. Did the car over-rev?, ie did he let the clutch out as he slammed it into second and bury the RPM's like to 7,8 or 9,000 RPM? I don't have experience with an over-revved Mustang, so I don't know what the damage typically is...one some cars the valve springs cannot provide adequate pressure to keep them opening and closing fast enough at that high an RPM so the pistons will slam into the valves...causing significant damage or sometimes total destruction (IE E36 BMW M3). I don't know if the Mustang has an "interference" design like that on the piston/valve interface. If it does, I am hoping the whining is because something else gave way - like the rear end, clutch, or tranny. I would try to isolate where the sound is coming from. A boroscope into a spark-plug hole may reveal piston / valve damage...if there is one that can work on a Mustang...and a compression check would be a good idea. Does the car whine if revved in neutral with the clutch in? Any smoking? How's oil pressure? Does the whining increase with tight turns in a parking lot? __________________ Roush Short shifter / Carmen's 3.47" TVS pulley Roush TVS Supercharger Steeda suspension /Big Brakes Mac L/T's / Prochamber / Roush Extremes KB BAP "Daily Driver" RWHP: 492@9 PSI w/ LT's "Dyno Queen": 512@12 PSI-stock exhaust Mods in Garage

October 31st, 2009, 04:00 PM	#3
07stanggt I Post Entirely Way Too Much 2007 GT Join Date: Mar 2007 Location: Ellicott City, MD Posts: 11,950 iTrader: 1 reviews	well he's lucky either way really. You can pick up a new take off 3650 for $600 Hell its less then a ring and pinion swap. My bet would be the rear.

October 31st, 2009, 04:41 PM	#7
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	im going with the axles are bent. __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

October 31st, 2009, 04:42 PM	#8
DiMora More Is Better. 2006 Roush Stage 1 Blown Join Date: Mar 2009 Location: Acworth, GA Posts: 2,911 iTrader: 1 reviews	Oh, and tell him to buy an MGW shifter. __________________ Roush Short shifter / Carmen's 3.47" TVS pulley Roush TVS Supercharger Steeda suspension /Big Brakes Mac L/T's / Prochamber / Roush Extremes KB BAP "Daily Driver" RWHP: 492@9 PSI w/ LT's "Dyno Queen": 512@12 PSI-stock exhaust Mods in Garage

October 31st, 2009, 04:43 PM	#9
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	Any aftermarket shifter will hell with the 3rd to 2nd problem __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

October 31st, 2009, 04:44 PM	#10
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	time to post a vid..... __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

October 31st, 2009, 05:03 PM	#12
07stanggt I Post Entirely Way Too Much 2007 GT Join Date: Mar 2007 Location: Ellicott City, MD Posts: 11,950 iTrader: 1 reviews	Ghostrider when you are done raining down your wisdom give me a call.

October 31st, 2009, 06:16 PM	#16
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	hmm, never felt a steeda, does it have a centering spring? __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

October 31st, 2009, 06:32 PM	#19
07 STROKER MM's resident Juice head 07 Mustang GT Join Date: Nov 2007 Location: PA Posts: 7,920 iTrader: 0 reviews	my gears started howling right after that 3rd to 2nd shift...turn up the sound on my vid and you can hear it...i went in and had new gears put in under warrenty. there is a TSB for gear while on he 07's so i got lucky __________________ The MGW short throw shifter Its not just a shifter...It's a lifestyle!

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