Just starting this post because i know alot of people have alot of questions about transmissions from why its makes a whining sound, why it flys out of gear....and so on...so if any one has any questions im more than willing to offer my advice or send you in the direction of some one who can...or if you just have good basic info you would like to put on here...Ive been working in a standard trani shop for over 4 years now we have gears on the shelf from the 1930's to present...
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03 Mustang GT, bbk cai, steeda short throw shifter, pypes 409 o/r x pipe, 40 series flow masters, mach 1 chin spoiler, mach 1 grill delete, tail light covers. Still to come is tuner,3.73 gear, throttle body intake and pendelum,udp's, and a long time from now a super charger
Just starting this post because i know alot of people have alot of questions about transmissions from why its makes a whining sound, why it flys out of gear....and so on...so if any one has any questions im more than willing to offer my advice or send you in the direction of some one who can...or if you just have good basic info you would like to put on here...Ive been working in a standard trani shop for over 4 years now we have gears on the shelf from the 1930's to present...
Any idea what the stall is on a 4R70W?
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Silver GT '03
4.6L 4R70W Off the Clock, Never Off-Duty™
JLT Cold Air Intake, ProProducts Typhoon Polished Intake Manifold, 180* thermostat, Long High Performance Transmission Cooler, Intake Spacer, SLP Loudmouth 1 Cat-back, Custom Sniper Tune w/91 Octane, Built Rear w/4.10s, Soon to come: 100 shot
the whinning in your trany underload could be a few things...it could be that you have a bearing that is work...but it could also be that your syncronizer rings(brass rings that help engage your gear and keep from wearing the engaugement teeth on the actual gear) are worn and need replaced...also if your trany has been gone though before and you have cheap gears they will sometimes have a whine expecially if you try to run them with a factory gear...how many miles does your car have on it?
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03 Mustang GT, bbk cai, steeda short throw shifter, pypes 409 o/r x pipe, 40 series flow masters, mach 1 chin spoiler, mach 1 grill delete, tail light covers. Still to come is tuner,3.73 gear, throttle body intake and pendelum,udp's, and a long time from now a super charger
its got 78k on it. ive been running full bolt ons with 4.10s for a while. i give it the beans from time to time but the car has never seen the track. however it has made a faint grinding sound in 5th gear when its cold. the grinding sound goes away after the car is good and warmed up tho. do you think a new tranny is in my near future?
that's awesome of you to offer your expertise on the forum!
my girlfriend has a 2000 v6 with the 4R70w and the car vibrates only when under load and only above 25-30 mph. its been looked at by her mechanic but he didnt find anything in the drivetrain. he didnt take out the trans or anything like that. what's your take on this? does it sound like a trans or torque converter problem?
that's awesome of you to offer your expertise on the forum!
my girlfriend has a 2000 v6 with the 4R70w and the car vibrates only when under load and only above 25-30 mph. its been looked at by her mechanic but he didnt find anything in the drivetrain. he didnt take out the trans or anything like that. what's your take on this? does it sound like a trans or torque converter problem?
I'm no expert but I'd have the U-Joints and Driveshaft checked over. If not that then the differential. It could be the torque converter slipping.
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Silver GT '03
4.6L 4R70W Off the Clock, Never Off-Duty™
JLT Cold Air Intake, ProProducts Typhoon Polished Intake Manifold, 180* thermostat, Long High Performance Transmission Cooler, Intake Spacer, SLP Loudmouth 1 Cat-back, Custom Sniper Tune w/91 Octane, Built Rear w/4.10s, Soon to come: 100 shot
Just starting this post because i know alot of people have alot of questions about transmissions from why its makes a whining sound, why it flys out of gear....and so on...so if any one has any questions im more than willing to offer my advice or send you in the direction of some one who can...or if you just have good basic info you would like to put on here...Ive been working in a standard trani shop for over 4 years now we have gears on the shelf from the 1930's to present...
Welcome aboard. Now we can have 2 resident transmission guru's.
I'm not well versed in automatic transmissions, hopefully you can fill that gap.
Richard
Tech Support
Tremec TKO, T45 & T56 Transmission Systems
Go with PI heads and quit watching The Fast and the Furious. (thanks 2 IhaveadopeGT)
Remember, it is almost impossible for anyone, myself included, to diagnose a problem over the internet without seeing the car. My advice is simply that, advice based on years of experience. I don't want you or anyone taking my word as gospel. I am trying to give some direction as to what I think may be happening.
well if your looking for help with automatics im no help eathier
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03 Mustang GT, bbk cai, steeda short throw shifter, pypes 409 o/r x pipe, 40 series flow masters, mach 1 chin spoiler, mach 1 grill delete, tail light covers. Still to come is tuner,3.73 gear, throttle body intake and pendelum,udp's, and a long time from now a super charger
i wouldn't think with 78k on it you need a new tranny but it is possible the grinding could be comming from syncro assembly that could be replaced so a basic rebuild on the tranny could clear your problem...the grinding in 5th is kind of weird though id expect it to be worn in 2nd or 3rd more but all trany's wear differently...
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03 Mustang GT, bbk cai, steeda short throw shifter, pypes 409 o/r x pipe, 40 series flow masters, mach 1 chin spoiler, mach 1 grill delete, tail light covers. Still to come is tuner,3.73 gear, throttle body intake and pendelum,udp's, and a long time from now a super charger
i wouldn't think with 78k on it you need a new tranny but it is possible the grinding could be comming from syncro assembly that could be replaced so a basic rebuild on the tranny could clear your problem...the grinding in 5th is kind of weird though id expect it to be worn in 2nd or 3rd more but all trany's wear differently...
it doesnt grind shifting into 5th, while im DRIVING in 5th there is a grinding sound, but only when the trans is still cold. sounds kind of like a bearing or something.
snowboarder7710 start by looking at all the tires really well, its often overlooked, but tires can make a car ride terrible even when they look ok, you want to check the balance and look for any blisters or flat spots and the like.
snowboarder7710 the stall depends on how much power you have and the weight of the car mainly, a 3000 stall converter may stall at 3000 on a mild engine, but that same converter will stall at 6000 or higher behind an 800hp motor in a heavier car. The stock should stall around 2000rpm, but like I said, it varies.
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That hunk of junk? Yeah, well I've made a few special modifications to that yellow 99 Gt, it makes the Kessel run in 12 parsecs and eats turbo japs and poops chevy's
snowboarder7710 start by looking at all the tires really well, its often overlooked, but tires can make a car ride terrible even when they look ok, you want to check the balance and look for any blisters or flat spots and the like.
snowboarder7710 the stall depends on how much power you have and the weight of the car mainly, a 3000 stall converter may stall at 3000 on a mild engine, but that same converter will stall at 6000 or higher behind an 800hp motor in a heavier car. The stock should stall around 2000rpm, but like I said, it varies.
Yeah thats very true, get a dynamic balance done; not just a static. Go with a shop with a good balancer.
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Silver GT '03
4.6L 4R70W Off the Clock, Never Off-Duty™
JLT Cold Air Intake, ProProducts Typhoon Polished Intake Manifold, 180* thermostat, Long High Performance Transmission Cooler, Intake Spacer, SLP Loudmouth 1 Cat-back, Custom Sniper Tune w/91 Octane, Built Rear w/4.10s, Soon to come: 100 shot
thanks for the responses!
the tires have been replaced a few months ago. i was hoping that the previous cheapo tires were just unbalanced. but i got her set up with some falkens and it still does the same thing. and i also had them rebalanced.
im going to look into the static balancing as well.
Here to help you with transmission problems 
(thanks 2 IhaveadopeGT)
