Top 20 Hyundai Motor 2003 Elantra - Page 5 Questions & Answers

pump could be bad. have it checked.

The information below was complied by me, it explains what causes the check engine light to come on and the process of finding the cause.When the Check Engine light (or Service Engine Soon or small picture of an engine) is turned on, the systems computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine and/or the emission system. When this happens you will seldom feel the car engine run any different. There are about 200 possible system faults (the gas cap is just one of them) that turn the Check Engine light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen/Oriley and Autozone parts stores (USA only) do this testing for free. I caution you on accepting any advice on what the problem is from a parts counter person, they are not trained and could cost you allot of hard earned money. Once you have the fault code post it here and I or another expert will take a look at the possiable casues.

could be bad spark plug. or coil over plug is bad

Hi, the speed sensor is needed even on vehicles without anti-lock brakes. Is your speedometer working? If it is, the problem may be the wiring from the sensor to the computer.

Without fitting a new bearing to the release fork it is virtually impossible however, i managed to put one together by cutting an inspection hole just big enough to get your hand inside above the slave cylinder and manually meshing the release fork, bearing and spigot shaft simultaneously

Hello Charles, If you have a failing O2 sensor, this code will set, but usually you will get an Oxygen sensor code as well. Check for vacuum leaks, unmetered air entering the engine. I hope this helps.

Illustration: You can also Go to www.hmaservice.com and register your vehicle by VIN #.. you'll then have access to wiring diagrams, shop manuals, service bulletins, illustrations and procedures, etc.

you cant remove them , just replace the headlights. You can polish them, but it wont last. Auto parts store will have a Headlight Polishing kit.

You have two separate fuses. Fuse #1 provides power to turn signals. Fuse #4 provides power to the hazard lamp circuit.

Photo:



Fuse Box

ITEM - WIRE COLOR - POLARITY - WIRE LOCATION
12V - red - POSITIVE - ignition harness
STARTER - white - POSITIVE - ignition harness
IGNITION - red - POSITIVE - ignition harness
ACCESSORY - red - POSITIVE - ignition harness
SECOND ACCESSORY - yellow - POSITIVE - ignition harness
BRAKE WIRE - white - POSITIVE - brake pedal switch
RADIO 12V - red - POSITIVE - radio
RADIO GROUND - black - NEGATIVE - radio
RADIO SWITCH - yellow - POSITIVE - radio
RADIO ILLUMINATE - pink - POSITIVE - radio
POWER ANTENNA - gray/orange - POSITIVE - radio
LF SPEAKER - white - brown - radio
RF SPEAKER - green - orange - radio
LR SPEAKER - yellow - black - radio
RR SPEAKER - orange - blue - radio I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Since you've already attempted to fix this p roblem yourself, there's a lot more to diagnosing this issue on FixYa. I'd have to get my hands on your vehicle to properly diagnose the problem. You describe an issue that points to a 'vacuum' leak somwhere or a restricted pcv (polution control valve). OR, It might have a purge control solenoid valve (PCSV) which could be stuck open or partially stuck open. DON'T start changing parts unless you're sure IT's causing the problem.
The best advice.... have it properly diagnosed by a qualified Hyundai Service Technician - it'll save you money in the long run. This is ALWAYS the problem when anyone starts chasing parts in the hopes it'll fix it.

I know you say you checked the bearings, but I'm betting the right side front hub bearing is bad. They are really hard to check because you have to take the weight off them in order to turn them, and you said it goes away when you unload the right side. If you remove the right side bearing and turn it by hand, I bet you will feel some hitches in it.

Go to www.hmaservice.com and register your vehicle by VIN #..
you'll then have access to wiring diagrams, shop manuals,
service bulletins, illustrations, etc.

some problems it could be is a fuse,fuel pump relay,wiring problem at the fuel pump when you replaced the pump.recheck your work you may find the problem there.

If you are serious about 'vapor lock', then this symptom will/would show up during a fuel pressure test/check. Did they check this? The fuel pressure on the 2003 Elantra is 350 kpa (3.5 kg/cm, 49.8 psi). At this pressure, there would be NO vapor lock. Now, if the fuel pump is 'INTERMITTENTLY' dropping in fuel pressure, it will 'fuel-starve' the engine & the engine management fuel ADAPTIVES will show a shift in the fuel trims (lean condition) by adjusting the fuel trim adaptives to + (more fuel) by keeping the injectors open longer. However, this may not be the problem. There are numerous systems which could be the cause, OR two or more systems contributing to the problem. The best advice is to have this condition properly diagnosed. Since you've taken it to 3 different dealers already, perhaps you should find a 4th.

You will find all the details, with pictures, in this repair manual
http://www.amazon.com/Hyundai-Elantra-Haynes-Repair-Manual/dp/1563927217

hyundai paint code location, Inside driver's door jamb or the door edge. for 97 to 2008 models, for the elantra. have a good day !

I guess you know what to do, right ?
You have a check light on !!
They have been on all vehicles for 31 years

Check for codes
Diagnose System with problem
Repair

2003 Hyundai Elantra Car Stereo Radio Wiring Diagram
Radio Constant 12V+ Wire: Red
Radio Switched 12V+ Wire: Yellow
Radio Ground Wire: Black
Radio Illumination Wire: Pink
Radio Dimmer Wire: N/A
Radio Power Antenna Trigger Wire: Gray/Orange
Radio Amplifier Turn On Trigger Wire: N/A
Front Speakers Size: N/A
Front Speakers Location: N/A
Left Front Speaker Wire (+): White
Left Front Speaker Wire (-): Brown
Right Front Speaker Wire (+): Green
Right Front Speaker Wire (-): Orange
Rear Speakers Size: N/A
Rear Speakers Location: N/A
Left Rear Speaker Wire (+): Yellow
Left Rear Speaker Wire (-): Black
Right Rear Speaker Wire (+): Orange
Right Rear Speaker Wire (-): Blue


hope this helps out!

Most likely the pump, If you have no problems after it starts, then it could be the check valve on the pump sending unit or the fuel pressure regulator. Both of these can cause your problem. You have to do a fuel pressure check. this will let you know what is bad. If it is the check valve , I would let it go till the pump went out. You can not fix or buy one of these seperate from the sending unit. Costly for just the valve.
Randy