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HouseCallAuto

HouseC ... 9/3/2010

2004 Mazda RX-8 Base 2 Cyl 1.3L

Engine

No start, no spark, no fuel pressure - cranks fine

One day car would not crank (just a single click), battery was not the cause as there was no voltage drop when cranking, changed starter and battery and car was fine after job was done - started normally and ran fine. Later on the same day, the car would not start but this time the engine would crank just fine. Scanner showed P0336 (crank sensor). Replaced crank sensor and still the same with the same code. Did continuity test of the two wires that run from the crank sensor to the PCM and wires tested perfect, neither wire was grounded. Customer had car towed to the Mazda dealer. Anybody know what is wrong?

9 Answers


HouseCallAuto

HouseCallAuto 9/14/2010

You will never in a million years believe this one. The starter I installed (aftermarket reman.) is "incompatible" with the minimum RPM requirements of Mazda. In other words, if the original Mazda branded starter cranks the engine over at lets say 240 RPM and an aftermarket starter is installed and lets say that starter cranks the engine over at 235 RPM, the PCM is programmed to ignore the crank sensor signal until the RPM is within minimum spec. Mazda installed their starter and the car is fixed. The starter I had installed had showed no sign of the cranking RPM being weak in any way. I refunded her money that I billed her. Even the customer was in shock! I could never win this one. Who buys dealer starter motors?

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HouseCallAuto

CVO 11/24/2011

Maitre HCA. Happy Thanksgiving to you and your family.

jeffery1621

jeffery1621 10/24/2010

could be your timing belt is broken

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1
jeffery1621

HouseCallAuto 10/24/2010

As you can see in the above post the car has been fixed. Read the post.

Nissan Technical Advisor

Master HCA, Happy Holidays to you and your Family.

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flatcroaker

flatcroaker 1/25/2011

mazdas live in their own lil world. cause i gots me one and i know !!! :}

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gene misurek

gene misurek 9/23/2011

look at schematic possible relay that is common to both fuel pump and ign.

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jkw8302

jkw8302 10/1/2011

hi there you helped me out on my gmc jimmy,i was wondering if you would look at my new post and see what you think thanks

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Bill

Bill 10/5/2011

Who the hell is this Kenneth

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eselejavier

eselejavier 1/26/2012

check all about the fuel pump, fuse , relay , power,filter.

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Pepe

Pepe 4/1/2014

Woulda never seen that coming. lol. Thanks for letting us know. For future reference, that explains why there was no spark or fuel.

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