In need of advise and information...please

TheDarkPath

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This isn't just another gear whine story...i'm afraid I may have more problems...It's long and I'm sorry.

I took my car to a reputable shop in SE Houston in July for a 4.10 gear install. I asked them before if they used the FRPP gear (several others had said they use Motive) and they said they used the FRPP. I guess I should have been more clear because they used the Motive (sold by Ford Racing) gears. That aside...here's where the pain starts.

1st visit to the shop: I dropped the car off at 9am for what they said would be a 3 hr install. At 3pm, I called just for a status update and they said it was about ready. I drove to the shop (30 miles) and as I arrived I saw the car leaving for a test drive. When they got back they said it was ready. I paid and left. On the drive home I noticed a whine on decelleration from 45mph down to 30mph. I called the shop to see what they thought and was told if it was still going on after 50 miles to come back.

2nd visit: I brought the car in at 9am again and at 4pm, I called and was told "it's ready". When I dropped it off, the owner said they have never had a gear whine. Moments later the owner told me that all 4.10 gears whine due to the amount of teeth and size of the gear. I mentioned the difference between the Ford gear and the motive (what they installed) and told them of the people I knew of with Motive gears that don't have whine. The Shop mgr told me that Motives were trash and it wasn't their fault. The installer told us when he first opened the gear, he thought it was a display peice as opposed to a gear. Later on, when I got to the shop, I asked what was done and they said they changed the oil. They had the car over 6 hours just to change the gear oil and they didn't call me once finished...that kind of annoyed me. They said to put 500 miles on it and see how it is afterwards. I put 800 on before the next visit.

3rd visit: I dropped the car off late in a day on a Thursday. They told me they thought the whine was tire noise. I explained that the noise goes away as soon as I put my foot on the throttle and if it was tire noise it would go on at certain speeds no matter if it was on the coast or pull side (i know my tire noise...i hear it plenty). They asked me for my old gear and pinion bearing (which I took back with me the 1st time). They said they wanted to see the pinion bearing. I had to make a separate trip for that. I called the following wednesday and they said it would be ready after 3pm. I picked it up and went for a test drive with the shop owner. The whine was still there (he was driving and from the passenger side the whine sounded different). He told me to put 500 miles on it and that they had put a new gear in. I told them I needed my stock gear. They gave me a pinion but I said I needed the ring gear too. They returned a ring and pinion in a box to me. I didn't check it. A few days later out of curiousity, I checked and it was an old 3.55 gear (not my stock 3.31). When I drove it home, the whine was still on the decel side and was louder than before. After 550 miles, I called back and said the whine was worse than before. The shop mgr told me a new gear was installed and I told him I needed to talk to the owner. He said he could take care of any issues I had. I told him I didn't think they put a new gear in and the reason the whine was worse was probably due to them adjusting a gear with over 800 miles on it. He said I needed to talk to the owner and the owenr wasn't available. I called several more times and then gave up. A few weeks later I called again and the owner said he was glad I called and that Ford had a TSB out on the pinion bearings. He wanted to get the car in and replace the gear and bearing.

4th visit: I left the car on a Tuesday and called them back the following Monday. They said the car would be ready at the end of the day, I picked it up on Tuesday. I drove the car and there was a slight whine on the throttle around 50mph but was barely audible. I didn't say anything because it was acceptable. 2 weeks later with 400 miles on the new gear the whine was getting worse. The whine was on the pull side from 30mph up to 75 and at 62mph, it drowned out my radio and exhaust. I called back and brought the car back with about 1000 miles on the gear. It took that long to get ahold of the owner and get the car in and for them to listen.

5th visit: I again was told that all 4.10 gears whine and it was probably my tires. We went for a test drive the the owner of the shop did agree the whine was clearly audible. He said it sounded like my tires. I left off the throttle and the whine stopped immediately. I told him tire noise is constant on pull or coast. He said the tire noise is more apparent on pull due to load. I told him he was wrong and went into detail how the tire noise is when it is present (tires were not currently making any noise). He told me all 4.10s whine because they are moving faster and have more teeth. I told him I've ridden in a car with 4.56s and was completely quiet. He told me 4.10s are different. He said he would not put another gear in the car. He agreed to change the oil and look for shavings in the oil. I had to buy the oil and he'd provide tx7. I came back the next day at 9:30am (they were busy the day before). They put the car on the lift and drained the oil. I checked with the mechanic and there were no shavings in the oil or pumpkin. Upon further checking, we noticed the gear was a 3.73. The owner told me the box must have been mislabled. That tells me they put a used gear in the car (the wrong ratio at that). He told the guy working on the rearend to put the oil in to see if that quiets it down. After a few minutes, they decided to put a new gear in without testing new oil on the 3.73. Once they had the pumpkin empty, the owner decided to check the inside pinion bearing. He knocked it out (in the front of the pumpkin towards the driveshaft). The bearing was worn down and the track was burning up. He replaced that. I asked what could cause they and he couldn't tell me. Once they had it all back together the shop mgr took it for a test drive and then came to pick up the owner...another test drive ensued. They said it was still whining but wasn't that bad. The car now whines on decel from 50 down to 35 (loudest at 45) and on accel from 53 up to 71(loudes at 65).

At this point I'm tired, frustated, and depressed about this whole thing. I haven't been able to enjoy the car since July, haven't been to the track since then. I've been without my car for over 2 weeks due to the shop time, the gear still isn't right, I've had to take off work several times to get it in/pick it up. I am going to put some miles on the car and see how it holds up. I wiill probably track it after the break-in period. After several requests, they do not have my stock gear to give me back. I'm guessing they put it in another car so I can't even go back to stock. They said they could put a 3.31 in there but it wouldn't be the one that originally came out of my car.

I will probably take it somewhere and have the rearend looked over thoroughly just to make sure there are no underlying problems. I'll probably settle with a 3.55 or 3.73 gear if that as long as it's quiet. At this point, I'm worried about burning up bearings.

What would cause the inside pinion bearing to burn up?

I've had several people tell me I should sue for the money I paid them but I'm not really much for suing.

At this point, this experience has ruined modding this car for me. I won't be doing anything else to the car. I had plans but they won't be carried out. The first time I've ever taken any car in for aftermarket work and this is what happens...sickening. I've never experienced worse customer service and been blatently lied to by someone who is in the service industry.
 

1Fast05Turbo

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Sorry about your ordeal. I got FRRP 4.10 gears, no whine other than the very faint barely audible normal gear whine.
 

stkjock

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dude....sorry to hear of the frustration.... if it were me.... I'd find an new shop have new FRPP 4.10s put in and take the old hardware back and ask for my money for the parts back... and move on.
 

TheDarkPath

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dude....sorry to hear of the frustration.... if it were me.... I'd find an new shop have new FRPP 4.10s put in and take the old hardware back and ask for my money for the parts back... and move on.

I know I'm going to take a loss on this deal but at least getting the $$$ back for the gear would be great especially for the cost of my stock gear that they obviously installed in someone else's car.
 

Larry_H

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When R&P gears are installed, the pinion gear must be installed at the correct depth to mesh up with the teeth on the ring gear at the correct spot. This requires some specialized tools. If the pinion gear is not installed correctly, then the gears will whine on acceleration or deceleration, sometimes both. If the pinion nut is not tight enough or too tight, it will bind the pinion bearing and cause a whine and sometimes even a clunk.

If this shop didnt use the proper tools to calculate the depth of the pinion gear, then there is the problem. They dont have a clue what they are doing.

Don't give up on your mods. Just get better advice on where to take your car for work. A competent shop can straighten this out for you. Since you are in Houston...I suggest that you get a referral from some of the members here that are in the Houston area.
 

matt texass

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it wouldn't happen to be strictly performance would it? I heard a guy took his car there to have hto's put in and well he found the ht1's still in there and no sign of the hto's he gave them to put in.
 

TheDarkPath

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When R&P gears are installed, the pinion gear must be installed at the correct depth to mesh up with the teeth on the ring gear at the correct spot. This requires some specialized tools. If the pinion gear is not installed correctly, then the gears will whine on acceleration or deceleration, sometimes both. If the pinion nut is not tight enough or too tight, it will bind the pinion bearing and cause a whine and sometimes even a clunk.

If this shop didnt use the proper tools to calculate the depth of the pinion gear, then there is the problem. They dont have a clue what they are doing.

Don't give up on your mods. Just get better advice on where to take your car for work. A competent shop can straighten this out for you. Since you are in Houston...I suggest that you get a referral from some of the members here that are in the Houston area.

I'm going to try to call a few shops tomorrow on my lunch break to see what they'd charge to attempt to fix it. I doubt anyone would guarantee anything since they'd be dealing with a previous botched install. I might just get as much fun out of the 4.10 as possible until the whine gets completely horrendous.

This ordeal has given me trust issues...great first experience.
 

matt texass

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ya ive heard bad things about strictly. Look up G-Force motorsports in best gear installs. Tell them matt sent you.
 

TheDarkPath

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ya ive heard bad things about strictly. Look up G-Force motorsports in best gear installs. Tell them matt sent you.

I'll be calling them tomorrow. Thanks for the referral man. I never heard a bad thing about them until now. I've heard quite a few good things about them but my experience goes beyond botched install.

Thanks again man.
 

SlwSVT

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Man, what a drag. Talk to the owner and tell him to put a stock set of gears in there, get you a new set of 4.10 gears and reimburse you for there crap install. Tell him if he does'nt antiup, that you will let others know about the unpleasant experience throughout the different boards. It is only fair for you to let others know about very poor service, as well as exceptional service. It is not uncommon for shops to butcher gear installs. Alot of mechanics think that some gear whine is normal. If the owner runs a good shop, then he will realize the poor workmanship and take care of you. If not, then make sure you let everyone know in as many message boards as possible.
 

TheDarkPath

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Man, what a drag. Talk to the owner and tell him to put a stock set of gears in there, get you a new set of 4.10 gears and reimburse you for there crap install. Tell him if he does'nt antiup, that you will let others know about the unpleasant experience throughout the different boards. It is only fair for you to let others know about very poor service, as well as exceptional service. It is not uncommon for shops to butcher gear installs. Alot of mechanics think that some gear whine is normal. If the owner runs a good shop, then he will realize the poor workmanship and take care of you. If not, then make sure you let everyone know in as many message boards as possible.

I won't get crap out of the owner just by talking to him. He's been my main point of contact, he's the one who's done and gone on the test drives (besides the one drive done by the shop mgr), and has been the main source of lies and deceit. I don't think threatening him with telling others the stay away will help. He said he'd put a stock 3.31 gear in my car for free but told me it probably wouldn't be the one that came out of my car to begin with and it wouldn't be a new gear...not taking that chance.
 

GRAYPNY

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I had a shop install a set of 4:10's and they made clicking sound on decel. After about 5000 miles it got so bad I was afraid to drive the car any distance. I spoke with the shop owner and he refunded the $$ for the installation. I had the Ford dealership reinstall the stock 3:55's and it has been sweet ever since. The Ford dealership WOULD NOT install 4:10's or 3:73's because the car didn't come from the factory with those gears.
 

TheDarkPath

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I know a Ford dealership in town who will install whatever gears I want...I'm saving that for a last resort down the line.

In this case, I no longer have my stock gear because the shop either lost them or installed them in someone else's car. They F-ed me.
 

pcdrj

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There is "some" truth to what he's telling you about 4.10's and gear whine. I had FRPP 4.10's and they did whine very slightly on decel. Things like gear whine, road noise, and ride comfort are very subjective and what may by tolerable to one could be unacceptable to another. FRPP are supposed to be the best choice but the first set I bought were so bad they wouldn't even go in...the teeth were clearly not cut properly. The second set were totally different, had differerent markings, and IMO were made by a different manufacturer. When you find a different shop just ask to take a ride in a car they've done and judge for yourself.

Also, you said the shop installed your old gears in another car? Isn't that a no-no? If they did I'd definitely find another shop.
 

terry5357

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There is "some" truth to what he's telling you about 4.10's and gear whine. I had FRPP 4.10's and they did whine very slightly on decel. Things like gear whine, road noise, and ride comfort are very subjective and what may by tolerable to one could be unacceptable to another. FRPP are supposed to be the best choice but the first set I bought were so bad they wouldn't even go in...the teeth were clearly not cut properly. The second set were totally different, had differerent markings, and IMO were made by a different manufacturer. When you find a different shop just ask to take a ride in a car they've done and judge for yourself.

Also, you said the shop installed your old gears in another car? Isn't that a no-no? If they did I'd definitely find another shop.

I call BS, I have had 4:10's since last March and have never, ever had any whine. THer the FRPP G-4.10 (A). HPP in lewisville tx did the install.

Dark just needs to go to a shop that has all the correct tools for the install. And then get an attorney stick in those thieves ass!
 
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2oo5GT

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i had FRPP 4.30's install with the (A) on it and they whined on decel but not that bad and they were installed by a reputable shop that's done tons of gear swaps. I have motive 3.90's now and they whine alilttle on decel but nothing bad. i know the back lash plays a big part. That shop sound crooked, i bet they installed your older gears in someone else's car and told them that they were new gears.
When i was at wichita TX, i drove to DallasMustangs for some 4.10's to be installed in my car and they never whined. i know for something to be mass produced, their will be some defects somewhere and i know they probably test them but it's probably ever 100th gear they test to make sure it's cut right and so on, so i know some bad ones probably slip out, maybe rare, but who knows.
Now you know to avoid that shop and telling others about your story will help to take buisness away from them.
 

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