20 Most Recent Hyundai Motor 2002 Elantra - Page 6 Questions & Answers

P0121 - Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem

The throttle position sensor is probably either damaged, dirty, unplugged, or dead. It's located on the engine. Find the throttle body - the TPS will be the little box on the side of the throttle body - it measures how far open the throttle is, and tells the computer so the computer knows how to direct the car's driving parameters (shift points, fueling, etc).

take a look to you DRL unit, it might be the cause, but usually, when the Daytime running light unit (DRL) is faulty, either the bulbs and the clusters lights are not working anymore.... might worth taking a look on that

If it has a chip in the key it wont work probably your going to have the dealer make one for you if it dont have a chip you should be able to get it made at a hardware store

it should be located under the dash on the drivers side of vehicle

did the car run before replacing the plugs? If yes then retrace your steps to see what became unhooked. If not then, I would check the fuel rail to make sure you're getting gas to the cylinders. If that's good then I'd check the coils to make sure you're getting spark. If you have a coil pack on each plug then I'd look at the ignition module.

Sounds like you have a bad ground. If it is not that you must have a gremlin.

Never disconnect a battery with the engine running or when key is on. You can cause a spark (even on the negative) which can cause a battery explosion, and/or you can easily fry the fragile computerized electronics if a power surge were to occur.That being said, what you did was prove that the new alternator is not putting out any current. Check all your fuses in the power distribution box. Also, a loose or poor connection on the battery or alternator may be the problem. Check that your battery cables still appear in good shape. Check the ground for the battery, and all the engine grounds you can see. Possibly one or more of the maxi-fuses in the distribution box may have blown.Don't try jumpstarting the car. Take the battery off and have it fully charged up. Then you can resume checking for why the alternator is not working. Good luck.

Handle prob broken. Is there any resistance when you lift the handle? Or is it super easy to lift?

Most modern automatic transmissions have a chip in them that will prevent the car from downshifting, say, into first gear when you're moving at 60 mph. Still, I wouldn't try it. When climbing a hill, only downshift if the AT can't decide which gear to be in and switches back and forth--choose the lower one. When descending use brakes to decelerate. However, once you've braked, do use a low gear to coast in, to prevent you from freely accelerating down the hill. ------------------------------------------------------------------------------GM Tech2 GM Diagnostic Scanner With C card

Why would one need to take out these tubes? I believe they are pressed into the head. I've never had the circumstance that I needed one out to affect any kind of repair.

FYI, the slave cylinder is pushing correctly, the clutch is the 'PULL TYPE', not the 'PUSH' type.
Go to www.hmaservice.com and register the vehicle by VIN #. You'll then have access to Shop Manuals, Wiring Diagrams, Illustrations, Service Bulletins, etc.

The clutch on the 2002 Elantra, as I mentioned, is the "Pull Type". Instead of 'Pushing' on the throw-out bearing, it "Pulls" on it. The pressure plate engages when the bearing is released (when it is 'pulled' back into the pressure plate 'fingers'

Was the new trans & clutch installed at an authorized Hyundai Service Department? If not, you might want to have them inspect the installation to determine what's wrong. If it WAS installed by a Hyundai Service Dept, take it back to them & tell them to FIX IT!

All fuse location are outlinmed in the owners manual. If you do not have one go here to download one free.

FUSE LINK IN THE FUSE BOX.LOOK FOR 75 OR MORE AMP FUSE LINK.