20 Most Recent 2004 Hyundai Elantra Questions & Answers

shift lock located on your shifter by sticking a key or an small object into the hole to release the lock; Only used when need to shift out of gear if the battery is dead OR the brake sereniod switch goes bad and wont release the lock to the shifter when applying pressure to brake peddle to allow you to move shifter into gear. also state in owners manuel.

2004 Hyundai... | Answered on Jun 27, 2019

For Hyundai Car 1999-05 - Intake Air Temperature (IAT) Sensor Location (check several options):

1.- The IAT sensor is located against the firewall to the left side of the engine. It is combined with the Manifold Absolute Pressure (MAP) sensor.

2.- This sensor is located in the air intake plenum assembly. On some vehicles this sensor is combined with the MAP/MAF sensor.

3.- The IAT sensor is located in the air plenum assembly. On some vehicles it is combined with the MAF sensor.

4.- This sensor is located in the air intake plenum assembly. On some vehicles this sensor is combined with the MAP/MAF sensor.

5.- This sensor is located in the air intake plenum assembly. It is combined with the Manifold Absolute Pressure (AFS) sensor.

6.- This sensor is located in the air intake plenum assembly. It is combined with the Manifold Absolute Pressure (AFS) sensor.

In the next graphic, check the position 2...


FIG : Underhood sensor locations-Elantra 2004-2005 2.0L engine

Hope this help (remember comment and rated this) TY for using Fixya.

2004 Hyundai... | Answered on Jun 27, 2019

I believe it's 15 amp fuse listed on the interior fuse panel "Room LP" lower right hand corner of the panel .The panel is located on the drivers side behind the little storage compartment 7 o'clock from the steering wheel.

2004 Hyundai... | Answered on May 18, 2018

Fix your car right away by clicking the link I attached https://www.reliable-store.com/products/2004-hyundai-elantra-repair-manual

2004 Hyundai... | Answered on Feb 09, 2018

The head gasket is allowing compression gas into the water jacket. Did you have the head ground flat before installing it on the head gasket?. Was the old head gasket completely removed from the block? It doesn't take much if a speck of old gasket remains on the block.

2004 Hyundai... | Answered on Dec 17, 2017

doubt it's the switch ,but you never know until testing is done . Do you know what that is ? Automotive systems electrical testing , view a wiring diagram too see what all is involved in said circuit ,an using a DVOM - digital volt ohm meter to test B+ voltage an ground ? Looking at the wiring diagram for the blower motor circuit for your vehicle i see a blower motor relay , a blower motor resistor pack an the blower motor switch . The switch is just a path to ground . If it doesn't work on high speed i would suspect the blower motor relay . View the wiring diagram here
http://www.bbbind.com/free_tsb.html Enter your vehicle information , year , make , model and engine size. Under system click on HVAC ,then under subsystem HVAC controls will come up on it's own . Click the search button then the blue link . Buy a cheap volt meter an test the circuit . That is after watching these videos .
Electric Testing Techniques You Need to Know
The Trainer 32 How To Read An Automotive Block Wiring Diagram

Learn how to test an save money , it's easy ! Is there B+ voltage at the relay .Also check out how a relay work's an how to test .

2004 Hyundai... | Answered on Dec 11, 2017

Obviously, it's an electrical problem. Electrical problems are many, yet they elude us when determing the CAUSE. You describe an INTERMITTENT OVERLOAD on the circuit... the challenge here is to determine WHICH circuit!

If you're not an electrician, then let an ELECTRICIAN troubleshoot it.

I, as an ELECTRICIAN, could teach you what you need to know to troubleshoot/diagnose electrical issues like this. However, this is not the forum for it. Have an electrician diagnose it. BEST ADVICE I CAN GIVE.

2004 Hyundai... | Answered on Dec 04, 2017

Sounds like a misfire (bad ignition coils)
You need to get it scanned for trouble codes.

2004 Hyundai... | Answered on Oct 22, 2017


2004 Hyundai... | Answered on Aug 30, 2017

There are nine fusible links in the engine compartment relay and fuse box: 120A FUSIBLE LINK (BATT), 30A FUSIBLE LINK (ABS 1), 30A FUSIBLE LINK (ABS 2). 30A FUSIBLE LINK (BLOWER), 40A FUSIBLE LINK (IGN), 20A FUSIBLE LINK (ECU), 50A FUSIBLE LINK(BAT), 20A FUSIBLE LINK (RAD), and 20A FUSIBLE LINK (COND). The passenger compartment junction block contains the 30A FUSIBLE LINK (PWDW)

2004 Hyundai... | Answered on Jul 20, 2017

You got ripped off by the mechanic. A good mechanic can pinpoint the problem by using a scan tool. Take vehicle to autozone or similar and have it scanned for codes this will give you a idea what is wrong. I believe the problem is exhaust related because of the blinking light.

2004 Hyundai... | Answered on May 29, 2017

Is it misfiring on just one cylinder (code 0301, 0302, 0303, 0304 etc.) or multiple/random (code 0300) cylinders?
It takes all 4 ingredients to fire a cylinder - Air, Fuel, Spark, and Timing. If you only have one misfire code (P0302 - Cylinder #2 Misfire), it should be a relatively easy diagnosis and fix. Let's start with Spark. I'm going to assume you have a code reader. First, remove the spark plug in #2 cylinder. Examine the threaded end. Is it wet and/or smell like fuel? If so, chances are the misfire is caused by a weak/absent spark. To confirm, swap it with a known good cylinder - example #3 cylinder. Clear the code. Start it and let it run for a couple of minutes. If a code appears with P0303 (the last digit refers to cylinder number), then you have found the culprit - bad spark plug. If the code reappeared with P0302 (Cylinder #2 again), then swap out the spark plug wire (both ends). Clear the code. Start and run for a couple of minutes. Again, if it appears on Cylinder #3 - the plug wire is the culprit. If the P0302 code comes back, swap the coil. See where this is going?
Now, when you first pulled the plug from Cylinder #2, if it wasn't wet or smelled of fuel, chances are Spark is not the issue. Was the plug dry and/or ashy? Possible cause is no fuel reaching the combustion chamber (cylinder). Using an automotive stethoscope, listen to the fuel injector for cylinder #2 while the motor is running. Should hear a regular and rhythmic ticking sound. Like a fast clock. (Use a long handled screwdriver touching one end to your ear and the other to the top of the injector if you dont have a stethoscope). No clicking or irregular clicking means fuel injector is not working (no sound) or is not working properly. Like searching for the Spark problem, swap the injector in #2 cylinder with #3. Clear code. Start and run. If the problem moved to #3, ithat injector is the culprit. If it stayed on #2, it is likely your wiring to that injector - check the whole harness for loose connections or swelled with oil wires/connectors. Keep pecking away at the fuel delivery system for that cylinder. Stay looking for things that affect only that cylinder.
When you pulled the plug, was it fairly normal looking? Then this misfire code might only be a timing problem. It is likely not a timing problem in your case, because timing affects all cylinders, but I thought I would just mention it since Timing is an important part of combustion. Also, if timing were a culprit here, another code would usually appear signifying the Camshaft Positon Sensor or Crankshaft Position Sensor was/is failed, or it is possible for the timing belt/chain to skip a knurl on a sproket and throw the timing off, but like I said, it would almost always cause multiple/random (Code P0300) misfires.
And finally, when you pulled the plug earlier, if it was an oily sticky mess, then the culprit might be Air - or compression/lack of compression. Lets hope not, because when Air is the cause of a misfire, it is usually an expensive fix. Need to perform a compression test. If you have little or no compression in the cylinder, it is likely a bad head gasket or a stuck/sticky/broken/chipped valve (exhaust or intake). Any of these things are bad news and expensive to fix in a shop. Also bad news and time consuming and difficult task for a shade tree mechanic.
Now, clear that code and get started! Good luck!


2004 Hyundai... | Answered on Jan 24, 2017

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