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Engine not running

Tiny
BRAD STRODE
  • MEMBER
  • 2002 MAZDA MILLENIA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 136,000 MILES
Would not start 5 minuets after just running. Shows no spark. Cant, hear fuel pump running prior to ignition. Plugs are dry. Turns over fine. Can't find emergency fuel pump shut off. Would fuel pump not running cause engine control to disable spark? All fuses - relays are good.

updated 9/4/09
OK: Where is that component (CKP) located in the engine compartment so I can check it? Brad
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Thursday, September 3rd, 2009 AT 9:00 AM

5 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Check for any DTC codes
suspect bad crank position sensor
CRANKSHAFT POSITION (CKP) SENSOR RESISTANCE
Millenia 2.5L 520-580
Measure resistance between sensor terminals "A" and "B".


https://www.2carpros.com/forum/automotive_pictures/99387_Graphic1_486.jpg

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Thursday, September 3rd, 2009 AT 6:28 PM
Tiny
BRAD STRODE
  • MEMBER
  • 4 POSTS
Updated 9/4/09
OK: Sounds good. Where is that component (CKP) located in the engine compartment so I can check it? Brad Strode
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Friday, September 4th, 2009 AT 3:32 PM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Crankshaft Position Sensor (2.5L)located On front of engine.


https://www.2carpros.com/forum/automotive_pictures/99387_Graphic1_488.jpg

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Friday, September 4th, 2009 AT 4:30 PM
Tiny
BRAD STRODE
  • MEMBER
  • 4 POSTS
I think I found the wiring harness plug in the schematic of the engine compartment. Isn't the actual sensor just above the oil filter. I had to order it and won't be here till Tues. Due to holiday. Thought I would check the fuel pump relay im between and can not find info on which unmarked relay it is. Not listed in owners manual or by Autozone as per location in under hood box. One more favor. Which one is it and do I check on a four pin relay for voltage or for continuity. Relay is $75.00 and I would have to order what I can't find? Thank you so much for all of your help. Enjoy your weekend.

Brad Strode
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Saturday, September 5th, 2009 AT 5:13 PM
Tiny
BMRFIXIT
  • MECHANIC
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Sorry dont have pic of the relays and location
but you can mark them and switch around for a quick check
this is the wiring for the relay too
LTGrn/red feed from the PCM
red/black feed from the main relay
blk/wht feed from the fuses
yel to fuel pump


https://www.2carpros.com/forum/automotive_pictures/99387_Graphic1_490.jpg

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Monday, September 7th, 2009 AT 2:47 PM

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