What would cause the car to crank but not start?

1999 KIA SEPHIA
193,000 MILES
Avatar
FRPTHLGY
  • MEMBER
  • 1 POST
Checked the fuel pump could not hear it turn on so removed it and tested outside vehicle, it runs. tested the wires going to fuel pump, one wire did not have power. Checked the fuses and fuel pump relay. Relay itself would click. Checked the relay box and it doesnt have power. Also can hot wire the car at the relay to battery and car will start.
Feb 26, 2012 at 3:54 AM
Advertisement
Avatar
FIXITMR
  • CAR REPAIR CONTRIBUTOR
  • 9,990 POSTS
the only wiring i can find says hot at all times going into relay even with key off. are you hot wiring input or output of relay?
Feb 26, 2012 at 6:05 AM
Avatar
FIXITMR
  • CAR REPAIR CONTRIBUTOR
  • 9,990 POSTS
have you seen this place? http://www.kiatechinfo.com/
Feb 26, 2012 at 6:10 AM
Avatar
KHLOW2008
  • CAR REPAIR CONTRIBUTOR
  • 41,814 POSTS
If the input does not have any battery voltage, you have a power supply fault from battery. It could be a connection problem within the fuse box if other components are working.

If it is the output terminal that you hotwire, then you have a faulty relay.

Feb 26, 2012 at 11:20 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.