2004 MAZDA RX8 CAR WON'T START

  • Tiny
  • Cobraman_114
  • 2004 Mazda RX8

Engine Mechanical problem
2004 Mazda RX8 4 cyl Two Wheel Drive Manual 25708 miles

Engine Mechanical problem
2004 Mazda RX8 4 cyl Two Wheel Drive Manual
25708

My Mazda RX8 will not start, it ran fine yesterday, but today it will not start. It turns over, but sounds different, like no compression or spark. I have heard of engine failures to this model year, but don't know the symptoms. Does anybody have any ideas?

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Tuesday, September 15th, 2009 AT 9:54 AM

3 Replies

  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

Hi Cobraman_114,

Thank you for the donation.

A TSB was issued for non starting, lack of power and/or presence of trouble codes, ( P2107, P2108, P2402, P0420). For such cases, the PCM has to be reflashed and this can only be done at the dealer.

ENGINE NO START, LACK OF POWER, DTCS P2107, P2108, P2402 OR P0420 - POWERTRAIN CONTROL MODULE (PCM) REFLASH
TECHNICAL SERVICE BULLETIN
Reference Number(s): 01 - 008/05
Affected Model(s): Mazda Special Program (MSP04) - 2004 RX- 8
Superceded Bulletin(s): 01 - 022/04, Date of Issue: November 01, 2004
Related Ref Number(s): 01 - 008/05, 01 -022/04
ARTICLE BEGINNING
APPLICABLE MODEL(S)/VINS
NOTE: This bulletin supersedes the previous bulletin 01 -022/04, issued on 11/01/2004. The REPAIR PROCEDURE and CALIBRATION INFORMATION has been revised.
2004 RX- 8 vehicles built prior to March 12, 2004
VIN Range: JM1FE17**40100001 - 40135536 "

DESCRIPTION
Some vehicles may experience the following concerns:
" Engine fails to start (cranks but no start) at cold engine temperature. This is caused by
flooded spark plugs due to slightly rich air/fuel ratio for cold starting.
" Engine is hard to start after short distance drive without engine reaching normal operating temperature at cold ambient temperature. This is caused by lower engine compression due to seals icing by moisture inside engine.
" Engine has lack of acceleration power and / or knocking when driving at more than approx. 6000 RPM or at high altitudes. This is caused by poor combustion gas sealing due to the lack of amount of oil supplied from the metering oil pump.
" MIL illuminates with DTC P2107/2108 stored in memory. This is caused by sub CPU - main CPU communication error after jumpstarting the engine due to dead battery.
" MIL illuminates with DTC P2402 stored in memory. This is caused by improper threshold setting for DMTL motor electric current tolerance.
" MIL illuminates with DTC P0420 stored in memory. This is caused by improper threshold setting for rear O2 sensor output tolerance.

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Tuesday, September 15th, 2009 AT 1:33 PM
  • Tiny
  • Cobraman_114
  • Member

So I could not figure out the problem by myself. So I just took the RX-8 up to mazda and they said the the spark plugs were shot and it caused the car to flood. Also the air filter was to dirty, which it did not look that dirty to me. Also the last thing that the car did not have any of the recalls for the computer update. So after they did all that the car is running better then when I bought it. But I also I am still getting rid of it because it burns to much oil for my blood and just all the other corks with it.

Anyway so if you have a problem for your rx-8 starting then it could be possibly these problems.

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Friday, September 18th, 2009 AT 10:47 AM
  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

Thank you for the input.

Guess I jumped the gun by going too far ahead when the basics were overlooked.

The engine for this vehicle works great but its lifespan is something Mazda is unable to provide longevity.

Thank you for using 2carpros

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Friday, September 18th, 2009 AT 11:08 AM

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