larryd

i changed all four coils a fresh new batt all the plugs all plug wires still no spark no start

what box controls the spark where is it location is it under the computer

what can i do im new withe the rx8 a 2004

HELP!!!!!!!!!!!!!!!

kevinande

You did reconnect the wiring the wires that go to the coils right?

Loki

iTrader: (1)

The ECU controls the ignition directly. It's basically a coil on plug design.

You get no spark on any of the coils ever? You're measuring this with a timing light? Can you tell us a bit more about thr history of the car?

Sometimes you need to clean the Eccentric shaft sensor (ESS), but by itself that shouldn't prevent you from having some kind of spark.

ZiG

Don't trust a toning light, mine wasn't picking anything up while cranking and wasted a lot of my time..

larryd

thanks i will try clean the ESS connection and all of the sensor it self does the computer it self control the spark it self i get no spark at all i pulled a plug wire and put the dummy testing plug on it and got no spark by eye site did that to all four plug wires i did not use a timing light to measure the spark it is so dead of spark i had my son put his finger in the coil wire to test for spark it is his car got to do what you got to do for your car son is there any other box under the computer that controls the spark thanks for your in put i am trying to be my boys hero lets make him jump because he got spark that means his car started hehehe

larryd

thanks i will try clean the ESS connection and all of the sensor it self does the computer it self control the spark it self i get no spark at all i pulled a plug wire and put the dummy testing plug on it and got no spark by eye site did that to all four plug wires i did not use a timing light to measure the spark it is so dead of spark i had my son put his finger in the coil wire to test for spark it is his car got to do what you got to do for your car son is there any other box under the computer that controls the spark thanks for your in put i am trying to be my boys hero lets make him jump because he got spark that means his car started hehehe

larryd

thanks for your expert ideas i am only a back yard mech

larryd

any more ideas any one think i should try before i junk it

Loki

iTrader: (1)

Are all your fuses OK?
There really is no other box involved.

dannobre

iTrader: (3)

Seems a little harsh

Did you buy the car not running?

There are numerous systems that will interact for the ignition to work correctly...


You will have to start from scratch and check everything to figure it out

wcs

iTrader: (2)

I laughed when I read this .. awesome.

Maybe someone else can validate but if I recall correctly only the lead coils fire during cranking.

I know the OP said he tried all four but likely a waste of time and added complications to troubleshooting if your checking a coil that isn't going to fire until the car is started.

wcs

iTrader: (2)

Found it here.

https://www.rx8club.com/series-i-tro...2/#post3417260

Dan, do you believe this to be correct still? I've never actually sat down to test it.