Ok so i have a 2000 elantra and the clutch keeps slipping. the issue started after i got the car figured it needed a clutch so i had one put in. to my surprise i get a call saying that the clutch was brand new. told them to put it in anyway. about a month after the clutch was installed the issue returtned. tried another clutch thinking it was something with the kit .. so here i sit 2 clutches, and a slave cylinder later and i still have this slipping issue .. it seems to go away for a short time if i bleed it out but then it comes right back.. it will shift fine and runs great then it will start to slip under load.. anyone have this issue or can someone point me in a dirrection to go. thanks

Do you have a check engine light on? Any fault codes?

Time to replace the clutch package. Replace the master and slave also and have the flywheel resurfaced.

P0734=A/T 4th gear incorrect ratio. This has nothing to do with the speed sensor. If the speed sensor was faulty, it would also set OTHER gear incorrect ratio codes. My experience tells me the 4th gear incorrect ration indicates the torque converter clutch (TCC) is slipping and nothing more. Unless there was a speed sensor DTC (Diagnostic Trouble Code), the sensor is not the issue (yet). The fact P0734 was set (trust the computer), the TCC is slipping (out of range). Question: Maintenance history may indicate the wrong transmission fluid may have been introduced. Hyundai's Transmission fluid is strictly SPIII... there is no substitute. The incorrect fluid will cause 4th gear slippage. Now, having said that, it doesn't mean the 4th gear (lock-up) clutch isn't worn out. Have a qualified/certified Hyundai Service Technician properly diagnose this issue.

if a clutch is bad it dont choose to be good in hot or cold, maybe it is the trans going bad as it warms up

has the release yoke slipped off the release bearing?

IT could be the forward band or reverse band or pump in the g/box are holding on instead of breaking drive at 600 rpm,as its like putting in the clutch on a manual box it frees off the drive.
But you could check the Actuator but i would say check the bands by when stopping slip into N if idles ok then its the box Sorry
Let me know how you get on Ron

Hi Jackiaria

Unfortunately you have a hydraulic clutch, which is self adjusting on your car.

The problem you are experiencing is the excessive wear to your clutch, or oil contamination on the clutch plate.

Both these problems can only be fully diagnosed once the gearbox is removed and the clutch is inspected.
There is also a possibility of excessive wear, or scoring, on the flywheel surface, the longer you drive the vehicle with a slipping clutch, possibly requiring the flywheel to be skimmed.

Shop around for a best price, and a trustworthy garage !

Good Luck !

A FixYa rating would be Nice....Thanks.....John.

nope if the clutch slips it needs to be replaced

While the suggested resistance check of the clutch safety switch should catch a bad switch. However it may still be bad. I had the experience on my 2001 Elantra with the same problem happening intermittently. I checked and I had the delay check the switch and it looked okay. After three more trips and having them test other things including replacing the Starter motor under warranty they just replaced the switch. No more problem until 3 years later same thing started happening. I asked them to specifically check this and they just adjusted how far the switch button stuck out for teh clutch pedal to engage it under the dash. 4 days later it happened again. I said f it or something like that and went and bought the 15 dollar switch and put it in myself. I've not had a problem since then. But then I'm just coming up to the 3 yr anniversary of that switch.
You can also just bypass the switch and remember not to crank your starter without the clutch engaged unless you want to experience what whiplash is like firsthand.
Just change the switch.

I don't know if I can help but as an owner of a Hyundai Elantra 2000 GLS with 205,000 miles and the original clutch and transmission I'll try and help!

I always start with the lowest cost solution first and avoid mechanics as much as possible!

Have you checked the trans fluid?
It should be changed every 30,000 miles!
Sometimes a Lucas Trans Fluid will cure - fix slippage!

Have you checked for a clutch adjustmet!
An adjustment can cure - fix slippage!

Are you a clutch rider with your foot always on the clutch?
If so you may have worn out the clutch!

How many miles to you have on your Hyundai Elantra 2000?