2002 Mazda Millenia Car will not start, I know I know, but

Tiny
EROGEL334
  • 2002 MAZDA MILLENIA

Electrical problem
2002 Mazda Millenia 6 cyl Automatic

Long story short. We have spark up until the coil, trust me I felt it. However the spark plugs are not receiving spark. The wires are fine, the spark plugs, rotor, and distributor cap are brand new. My mechanic and I are lost as to what do next.

The car's timing was just fixed as it was off. The crank sensor is fine since we're receiving spark up until the coil.

I would appreciate any advice or help.

Thanks for reading.

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Saturday, October 23rd, 2010 AT 9:50 PM

47 Replies

Tiny
EROGEL334
  • MEMBER

Its definitely not a fuel problem. We here the feul pump go off, we smell it, we definitely have compression, we tested for it. The ignition system is fine since it cranks, for some reason however there is no spark at the spark plugs, but there's spark at the coils. The distributor cap, rotor, and spark plugs are new, the spark plug wires are fine. We are stumped as to what to do next.

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Monday, October 25th, 2010 AT 9:33 PM
Tiny
RASMATAZ
  • MEMBER

Inspect and test the crankshaft position sensor on front of engine


http://www.2carpros.com/forum/automotive_pictures/12900_cps_53.jpg

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Monday, October 25th, 2010 AT 9:58 PM
Tiny
EROGEL334
  • MEMBER

I dont mean to be difficult, I appreciate your help. However. If the problem were the crankshaft position sensor. Would we still receive spark at the coil?

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Monday, October 25th, 2010 AT 11:01 PM
Tiny
RASMATAZ
  • MEMBER

For some reason however there is no spark at the spark plugs, but there's spark at the coils. This one is kind of hard to understand either you have it or don't-check and test both the Cam and Crank sensors-

Inspect for shavings on the sensors

Check the CPS resistances should read 950-1250 ohms, also the wiring for shorts and open

Camshaft Position Sensor (Millenia 2.3L)
Camshaft Position (CMP) sensor is located on right front of engine. Disconnect CMP sensor harness connector. Check for continuity between CMP sensor connector terminals "B" (Red/Black wire) and "C" (Yellow/Black wire). If continuity is present, replace CMP sensor. If continuity is not present, check for short or open circuit between following:
CMP sensor 4-pin harness connector terminal "B" and main relay 4-pin harness connector terminal "D" (Red/Black wire).
CMP sensor 4-pin harness connector terminal "C" and PCM 34-pin harness connector terminal "4F" (Yellow/Black wire).
CMP sensor 4-pin harness connector terminal "A" and PCM 34-pin harness connector terminal "4D" (Black/Blue wire).
Repair open or short circuit in wiring harness as necessary.

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Tuesday, October 26th, 2010 AT 12:53 AM
Tiny
WAYDELL
  • 2001 MAZDA MILLENIA
  • 2.5L
  • V6
  • FWD
  • AUTOMATIC
  • 160,000 MILES
  • MERGED

Car just died and won't start- cranks fine -no voltage to single wire going to distributor -the other plug(4/5 wires ) has two term. That are hot. -Spark plugs are wet with gas - has 140/150 comp. On all cyl.-No spark from spark plug wires - been looking for problem 18 hrs. And at the beginning had fire from spark plugs-

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Thursday, December 15th, 2016 AT 6:46 PM
Tiny
WAYDELL
  • MEMBER
  • MERGED

Thank you for your response - I have disconnected the battery a few times - will there be any stored codes -- I have a scanner(autoXray)-

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Thursday, December 15th, 2016 AT 6:46 PM
Tiny
HMAC300
  • EXPERT
  • 46,415 POSTS
  • MERGED

I think so normally a battery disconnect doesn't remove codes.

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Thursday, December 15th, 2016 AT 6:46 PM
Tiny
WAYDELL
  • MEMBER
  • MERGED

I have been checking for voltage at a couple of places- no voltage going to crank sensor / main wire going to distributor -- cranks over fine -- I cannot check for codes with my scanner (now it doesn't work either) but I found a diagnostic plug under the hood by the brake cyl. And was wondering if I can run some test there. Thank You for your time-- I am going to concentrate on loose wiring until I have a better direction

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Thursday, December 15th, 2016 AT 6:46 PM
Tiny
HMAC300
  • EXPERT
  • 46,415 POSTS
  • MERGED

Hey hook it up under hood if it works fine if not you haven' lost anything. Try wiggling the crank sensor connector then see if it fires if it does the connector isn't any good. Che resistance of crank and cam sensor here is crank sensor.
Millenia 2.3L950-1250
Millenia 2.5o & 626 (3) 520-580
measure between A & B

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Thursday, December 15th, 2016 AT 6:46 PM
Tiny
WAYDELL
  • MEMBER
  • MERGED

I have 546 on the crank sensor - I can connect batt. Voltage to the (suposed to be hot)wire going to the distributor and get weak fire from spark plug wire when I crank over the engine-?

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Thursday, December 15th, 2016 AT 6:46 PM

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