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Engine will not start

Tiny
URSULOROBLES
  • MEMBER
  • 2003 MAZDA 6
  • 2.3L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 129,000 MILES
The car quit running will driving on road, approximately twenty five miles per hour. I had just put fuel at gas station. I checked for fuel pump operation, I can hear the electric pump come on and I add fuel to intake and still will not start. I noticed that spark is intermittent at spark plugs. It detonates and immediately shuts off and will not idle.
what should I check?
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Wednesday, November 15th, 2017 AT 7:44 AM

10 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
If the check engine light has come on, check to see what trouble codes are stored in the computer. That will be a starting point for us. Let me know what you find. (Note: Intermittent spark may be the result of a bad crank sensor or wiring issue to the sensor)
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Wednesday, November 15th, 2017 AT 8:33 PM
Tiny
URSULOROBLES
  • MEMBER
  • 47 POSTS
I checked for trouble codes and it says, "no link". What shall I check?
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Thursday, November 16th, 2017 AT 2:14 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
No link could mean a blown fuse, scan tool not compatible or a fault with the Engine Control Module.

I would suggest checking the fuses and if you have a test light, use it to check pin # 16 of OBD-II for battery voltage.
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Saturday, November 18th, 2017 AT 6:59 AM
Tiny
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  • MEMBER
  • 47 POSTS
Where is the OBD11 computer? Thanks.
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Saturday, November 18th, 2017 AT 7:49 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
The OBD port is under the dash on the driver's side of the vehicle. It's not the actual computer, but rather the port were you attach the scanner.
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Sunday, November 19th, 2017 AT 5:58 PM
Tiny
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  • MEMBER
  • 47 POSTS
You want me to check pin 16 on obd11 connector for voltage? Can you give me a pic of which is pin16?
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Monday, November 20th, 2017 AT 6:22 AM
Tiny
URSULOROBLES
  • MEMBER
  • 47 POSTS
Ok, I saw two pins on the OBD11 connector, with key on, the pin connector on the right, looking straight at connector, has a dim light, not bright like the brightness on a fuse. Let me know, thanka.
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Monday, November 20th, 2017 AT 5:59 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
The connector has 2 rows of 8 pins with some pins empty. It should be the last one on the right. What did you use to get the light?
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Thursday, November 23rd, 2017 AT 6:39 AM
Tiny
URSULOROBLES
  • MEMBER
  • 47 POSTS
Facing the connector, the pin on right has 2.5 volts with key on
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Wednesday, December 13th, 2017 AT 1:59 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
I am not sure if you are showing the correct pin. What you mentioned could be Pin # 1 or Pin # 16 as they are diagonally opposite. The color of the wire should be Blue/Red (blue with a red stripe) and it gets its power from Room fuse (15 A). Is the room light light working?
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Friday, December 15th, 2017 AT 7:26 AM

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