[Bossclev]

I just replaced the 2.3 engine in my 2005 mazda 6 with the another 2.3 engine same year. It seems to be getting fuel but will not start. Any ideas as to what I am missing? Does the new engine need to be reprogrammed? Any advice will help, thank you.

 

[Chamfer]

I just replaced the 2.3 engine in my 2005 mazda 6 with the another 2.3 engine same year. It seems to be getting fuel but will not start. Any ideas as to what I am missing? Does the new engine need to be reprogrammed? Any advice will help, thank you.

Ha. I have the same problem. Everything seems OK, but not getting spark. My fear is a fried the PCM.
Did you get your started?

 

[Jovie]

Ha. I have the same problem. Everything seems OK, but not getting spark. My fear is a fried the PCM.
Did you get your started?

 

[Jovie]

Hi I did the same thing even got a new computer well it wasn't in need of a new computer I still have some bugs I need to work out but I do know that after the swap it wouldn't even crank so it can do to programing the keys even tho I had the original key I had to order blank one program in order to get it just to crank but still no start for me now I'm checking the timing cause I have no spark

 

[Jovie]

Hi I did the same thing even got a new computer well it wasn't in need of a new computer I still have some bugs I need to work out but I do know that after the swap it wouldn't even crank so it can do to programing the keys even tho I had the original key I had to order blank one program in order to get it just to crank but still no start for me now I'm checking the timing cause I have no spark

Sorry I really hate my phone but anyways the programming of the keys will help n I did mine myself

 

[Chamfer]

There is a guy on youtube called "Scanner Danner." He has lots of case studies for diagnosing cars for no start. All you need is a 12 volt test light and a volt ohm meter -both of which you can get cheap at harbor freight.

The sensors should get a 5V reference signal (from the ECM). If they don't get that -or a good ground, then it's problems.
First -Check all the fuses. Inside and out.
Make sure all the engine grounds are landed.
Double check all the electrical connectors are locked in in place.

There are also a couple good vids on youtube for setting the timing. If you didn't take the crank pulley off, the the timing should be OK unless the chain skipped ?

I'm waiting for it to warm up before troubleshooting.