HD dead auto trans at 365 miles

[HYTECH]

I hope this isn't a bad sign. but last week I got a HD that wouldn't move today I took the trans apart and found the pump was froze up but before it stoped it pumped aluminium chunks (the size of large grains of Kosher salt) through the trans and cooler plugging it up.

sounds like a manufacturing defect or something left in there. I guess thats what warranty is for.

[cclngthr]

I hope this isn't a bad sign. but last week I got a HD that wouldn't move today I took the trans apart and found the pump was froze up but before it stoped it pumped aluminium chunks (the size of large grains of Kosher salt) through the trans and cooler plugging it up.

sounds like a manufacturing defect or something left in there. I guess thats what warranty is for.

Likely something left in there.

Would it be advisable to add a external cooler to this car? If I were to add one, I would run the fluid through the external cooler first.

[HYTECH]

Likely something left in there.

Would it be advisable to add a external cooler to this car? If I were to add one, I would run the fluid through the external cooler first.

If you pull a trailer then you should. any help in keeping it cool is good.

when I took it apart it was a good design very large clutches and plenty of webbing in the case. it also seems to be alot simpler design that the XDs trans.

[cclngthr]

If you pull a trailer then you should. any help in keeping it cool is good.

when I took it apart it was a good design very large clutches and plenty of webbing in the case. it also seems to be alot simpler design that the XDs trans.

Would the simpler design be part of the variable force solenoid line pressure system?

Correct me if I'm wrong, but is the high side (pressure) on the cooler lines is the one that is in front of and lower than the return line, which is behind the push line? From the picture, that appears to be what it is. Also, is the push line going to the bottom of the radiator or top of it? It appears that the hard lines on the trans is situated where the push line is on the passenger side of the car and return is on the drivers side (or is that different)?

[05xd]

Haha got ya beat.I have a 07 Sante Fe sitting in my bay that I am replacing the trans in.37 miles,yea thats right 37 miles.Everytime you put it in gear meaning 1st and even reverse,it dies out.I put it on the lift and started it then placed it in gear and it would drive the wheels.I called techline and they told me to replace the trans due to what they believed was either a bad torque converter or internal line pressure problems.Go new models lol

[HYTECH]

Would the simpler design be part of the variable force solenoid line pressure system?

that's true I never thought of that. that does eliminate many parts.

Correct me if I'm wrong, but is the high side (pressure) on the cooler lines is the one that is in front of and lower than the return line, which is behind the push line? From the picture, that appears to be what it is. Also, is the push line going to the bottom of the radiator or top of it? It appears that the hard lines on the trans is situated where the push line is on the passenger side of the car and return is on the drivers side (or is that different)?

I'm not sure It's not listed in my shop manual but I'll look in the rebuild manual when I get to work tuesday.

Haha got ya beat.I have a 07 Sante Fe sitting in my bay that I am replacing the trans in.37 miles,yea thats right 37 miles.Everytime you put it in gear meaning 1st and even reverse,it dies out.I put it on the lift and started it then placed it in gear and it would drive the wheels.I called techline and they told me to replace the trans due to what they believed was either a bad torque converter or internal line pressure problems.Go new models lol

I replaced The TCC solinoid in a 06 sonata for the same thing. I don't remember the mileage but it was a new lot car.

[cclngthr]

that's true I never thought of that. that does eliminate many parts.




I'm not sure It's not listed in my shop manual but I'll look in the rebuild manual when I get to work tuesday.



I replaced The TCC solinoid in a 06 sonata for the same thing. I don't remember the mileage but it was a new lot car.

I and Scott (stauf) looked at the line pressure diagram and thats what we came up with (my description). It is not listed in my shop manual (on disk). I want to be 100% sure of it before I hook it up. I had issues when I had one on my XD and the fluid ran to the radiator cooler first. It ran too cold. Hooking it up the other way is better, prevents overcooling..

I was also told that the HD Elantra automatic trans is the same one used in the 4 cylindar (2006) NF Sonata. I don't exactly buy that yet.

Can you PM me the details?

[Keyan]

Damn ! We don't have stuff like that going wrong at toyota...

[evan938]

Damn ! We don't have stuff like that going wrong at toyota...

well holy ****. good thing you dont have too many rare instances...then they wouldnt be rare

[cclngthr]

Haha got ya beat.I have a 07 Sante Fe sitting in my bay that I am replacing the trans in.37 miles,yea thats right 37 miles.Everytime you put it in gear meaning 1st and even reverse,it dies out.I put it on the lift and started it then placed it in gear and it would drive the wheels.I called techline and they told me to replace the trans due to what they believed was either a bad torque converter or internal line pressure problems.Go new models lol

Isn't the tranny in the 07 Santa Fe the same as the Sonata and Azera (along with the 4wd unit added)?

[Blackcasper2005]

wow i guess i dont want an 07 hyundai cause i was thinking about it

[HYTECH]

I was also told that the HD Elantra automatic trans is the same one used in the 4 cylindar (2006) NF Sonata. I don't exactly buy that yet.

They are not the same transmissions I have replaced one of these also they are alot like the v6 trans.

Damn ! We don't have stuff like that going wrong at toyota...

every car maker has this kind of stuff happen occationaly. if you make 1,000,000 cars a few will have defects. thats why there's a warranty.


over all Hyundai is a very good car.

Quoted from JD powers
"Hyundai ranks among the top three nameplates in the study for the first time in the history of IQS. Highlights include a top ranking for the Hyundai Tucson in the compact multi-activity vehicle (MAV) segment, and top-three segment performances for the redesigned Sonata and all-new Azera, as well as the Elantra and Tiburon."

wow i guess i dont want an 07 hyundai cause i was thinking about it

this happens with every year model. Somone replaces a trans or motor on a new car. you just don't hear about it. the cars are getting more reliable evey year. I have noticed a large drop in warranty repairs in the last 4 years they just keep getting better.

[cclngthr]

They are not the same transmissions I have replaced one of these also they are alot like the v6 trans.

Equus on EC (an HMA employee) told me it was the same. Did not think so.

Do you know the TOTAL fluid capacity of the HD auto tranny? How much higher is it from the XD's tranny? The book says 6.5 quarts, but I don't think that is the total volume including the torque converter. Equus said about 9.5 quarts. I know the XD takes 5 for a drain/fill and about 9-10 for a flush.

My books tell me the XD's trans holds about 7.8 quarts, while the HD has a lower number. To me that don't make much sense because the car did increase in weight and size. A lower number could mean a potential overheating issue, which is common among FWD cars.

[HYTECH]

Equus on EC (an HMA employee) told me it was the same. Did not think so.

Do you know the TOTAL fluid capacity of the HD auto tranny? How much higher is it from the XD's tranny? The book says 6.5 quarts, but I don't think that is the total volume including the torque converter. Equus said about 9.5 quarts. I know the XD takes 5 for a drain/fill and about 9-10 for a flush.

My books tell me the XD's trans holds about 7.8 quarts, while the HD has a lower number. To me that don't make much sense because the car did increase in weight and size. A lower number could mean a potential overheating issue, which is common among FWD cars.

the shop manual says 6.9 for the HD. This makes sense it is slightly smaller and has less hydraulic and oil control circuits due to the variable force solenoid. there are no acuumulators to fill with oil.

[cclngthr]

the shop manual says 6.9 for the HD. This makes sense it is slightly smaller and has less hydraulic and oil control circuits due to the variable force solenoid. there are no acuumulators to fill with oil.

With the size, is it capable of handling more power? The XD could handle up to 200 easily. Could this handle more engine power?

With the increased size of the clutch packs, and added radiator cooling capacity, would overheating be a problem with this unit? I would think 7 quarts would be marginal to keep the temperatures where they need to be without the potential of overheating the oil. Less oil has a tendancy to heat up faster. Although more force on the clutches are applied with the VFS system, I would suspect that heat could be an issue if fluid levels were not watched closely.

[HYTECH]

With the size, is it capable of handling more power? The XD could handle up to 200 easily. Could this handle more engine power?

With the increased size of the clutch packs, and added radiator cooling capacity, would overheating be a problem with this unit? I would think 7 quarts would be marginal to keep the temperatures where they need to be without the potential of overheating the oil. Less oil has a tendancy to heat up faster. Although more force on the clutches are applied with the VFS system, I would suspect that heat could be an issue if fluid levels were not watched closely.

I think the power handleing will be good the size is mostly the
lack of a large valve body this one is very small.

I'm not sure but i think if the temp sensor reads the fluid hot it should not let the clutches slip as much it should be hasher engagement and longer TC lockups

[cclngthr]

I think the power handleing will be good the size is mostly the
lack of a large valve body this one is very small.

I'm not sure but i think if the temp sensor reads the fluid hot it should not let the clutches slip as much it should be hasher engagement and longer TC lockups

I noticed my HD auto engages into gear faster and firmer than the XD. That's the first thing I noticed when I test drove it. Overall shifting is smoother; I think the VFS system releases pressure right before the shift and ramps it way up after the shift. This might reduce wear and keep the temps at bay..

I do notice with mine that the TC doesn't unlock as fast or as often as the XD does. The XD tended to unlock at any throttle response or slight hill.