No start problem

Tiny
HARLEY19
  • 2004 HYUNDAI SANTA FE

Four cylinder two wheel drive automatic 72,000 miles.

My car will not start. The relay for the fuel pump is not getting power but it can be bypassed and the fuel pump starts right up. When I try to start the vehicle after bypassing the relay it still will not start. I have also checked the inertia switch and it has not popped up. It has gotten regular fluid changes and has always run like a champ before. I am stumped as to what it could be.

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Monday, April 27th, 2009 AT 9:42 AM

9 Replies

Tiny
RASMATAZ
  • MEMBER

Could be the computer not grounding the fuel pump relay.

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Monday, April 27th, 2009 AT 9:45 AM
Tiny
HARLEY19
  • MEMBER

How do I check the computer to see if that is it? Or would it be better just to reset the computer? If I do have to reset the computer how do I do that?

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Monday, April 27th, 2009 AT 9:49 AM
Tiny
RASMATAZ
  • MEMBER

Do a continuity test on the orange and gray wire at the fuel pump relay connector to pin 20 at the computer.

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Monday, April 27th, 2009 AT 10:07 AM
Tiny
HARLEY19
  • MEMBER

Would the relay also cause the spark plugs to not fire? If not what would cause it? They are not working even if I bypass the relay.

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Monday, April 27th, 2009 AT 3:47 PM
Tiny
RASMATAZ
  • MEMBER

Test the engine control relay it powers the fuel pump relay coil side and also the ignition coils through ECU fuse one 20 amp.

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Monday, April 27th, 2009 AT 6:15 PM
Tiny
HARLEY19
  • MEMBER

I just finished checking all the fuses and relays and there all good. Is there another component that controls the fuel pump and ignition coils before the fuse box that could of gone bad?

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Tuesday, April 28th, 2009 AT 2:25 PM
Tiny
RASMATAZ
  • MEMBER

Check and test the engine control relay and ignition failure sensor.

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Tuesday, April 28th, 2009 AT 5:08 PM
Tiny
HARLEY19
  • MEMBER

Where is the sensor located?

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Wednesday, April 29th, 2009 AT 9:08 AM
Tiny
RASMATAZ
  • MEMBER

2.4L engine is on rear of cylinder head.


http://www.2carpros.com/forum/automotive_pictures/12900_sensor_1.jpg

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Wednesday, April 29th, 2009 AT 4:37 PM

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