2005 Mazda 6 with JDM motor what start.

I've done some testing and my camshaft sensor plug doesn't have any power when i turn the ignition to the "on" position. I'm not sure why this doesn't have power or does it just get power when i turn the motor over to start? I don't have a wiring spec to see what this goes to in the fuse panel. I'm getting intermitting spark and I have power to the coils and power to the injectors. Please help. I've replaced the original engine with this JDM engine and done a lot of work with this car and now I'm stuck. Any help please let me know.

thanks,

kirk

For our info, does your Mazda still use the same PCM and harness from the North American vehicle? Or did those come with the JDM engine? Asking to see if the wiring diagrams I have access to will be accurate. :blink: Also, I'm thinking this is the 2.3L and not the V6, right?

If this is a two wire sensor, then it's a Variable Reluctance sensor, and neither one will have power at any time. Neither will the crank sensor. These are sensors that generate their own voltage, and don't use dedicated power feeds. Check out this post from another Mazda engine swap thread for an example of what the signals are supposed to look like:

www.scannerdanner.com/forum/post-your-re...m.html?start=34#4750

Does this engine start at all? Or does it lose spark intermittently?

I'm using the same PCM that was with the car. 2005 2.3 liter engine. Bought the JDM motor from orlando and this is also a 2.3 liter engine. So then I'm not correct about the power. I'm getting little spark from the coils. Not like it should be and I thought it would have to do with the camshaft sensor. Would you think the camshaft sensor is bad?? Please reply.

I've check the timing a dozen times and used my timing tools to make sure the timing is correct with making sure I'm at TDC and the cams are also aligned as well. Still no turn over. Checked my fuel injectors and working properly. My son and I have done a lot of work on this car and we are so close but yet so far away from getting this engine to turn over. Please any help from anyone on this forum. I'm outside of Harrisburg PA.

It sparks, but its intermittently, not like it should. The engine doesn't start at all.

kirkjenn wrote: I'm using the same PCM that was with the car. 2005 2.3 liter engine. Bought the JDM motor from orlando and this is also a 2.3 liter engine.

Sweet, that makes testing a ton easier.

I've check the timing a dozen times and used my timing tools to make sure the timing is correct with making sure I'm at TDC and the cams are also aligned as well. Still no turn over.

When checking the timing, you're using the camshaft alignment plate, the crankshaft locking pin, AND the M6 bolt through the crankshaft pulley into the timing cover? I really don't mean to nitpick or second guess you. But knowing that timing is correct is critical before moving forward.

It sparks, but its intermittently, not like it should. The engine doesn't start at all.

Gotcha. I totally understand why you're questioning the cam signal at this point. Do you have access to a two channel scope? That'd answer a lot of questions about what the PCM is seeing on the cam and crank signals. If not, no worries, we can get by without it.

No, I don't have a two channel scope.

Yes, I did the timing exactly as you stated. Cam tool/TDC bolt/ and the M6 bolt. Timing I've check myself a dozen times and its perfect thats why I'm so confused on why its not firing....Please reply and let me know what I"m doing wrong. This has been a lengthy project for my son and I. After work and after school for him... Lots of hours under the hood:). Any help I would really appreciate it.

Ok. I've replaced the Camshaft sensor and now i've got plenty of spark in the number 1 cyclinder. I haven't checked the rest of the coils but number 1 is firing. I took off the fuel rail and test it as well and I'm getting all four spraying fuel. I sprayed fuel in the intake and it definitely wants to run. What am i doing wrong?????? This is very irritating....

please help.

kirk

Hello I'm having the same problem. I have a 2005 mazda 6 2.3 American bought a 2.3 Jdm motor but when I received it realized it had numerous part different than mine. The crank pulley bigger, the water pump pulley bigger, the cks sensor was longer, came with coil pack & wire instead of individual coils & cable throttle not the electronic throttle body. So I ended up swapping the timing cover, the cks sensor both crank & water pump pulleys, valve cover, intake manifold, exhaust manifold & throttle body. Cranks but no start. Gets fuel and spark no tries to start but cuts off immediately Please tell me what I'm missing ir doing wrong?