trying to get rebuilt going
#1
trying to get rebuilt going
hello. i recently had the engine rebuilt and now i was left to the taske of putting it back together once the engine was installed and it has. So no ive hooked up all connectors and new battery. car cranks now but will not start. I found out that the obd2 does not work and fuel pump does not prime and radio does not work. I have checked all fueses and tested all relays. I know if the car isnt getting fuel it wont start. im gonna try a little starter fluild in the intake....but anyone have any other ideas that can help. 2005 mazda rx8 A/t. thanks everyone.
#3
i tested the connection to the fuel pump and its reading voltage. so may be a bad pump. i sprayed starter fluid and that did nothing just cranked. im trying to find my bit for spark pliug to see if im getting spark. and obd is getting no power stiill
#5
You gonna eat that?
iTrader: (1)
This may be helpful, maybe not.
Worked for me once.
Scroll down to the immobilizer section, if it's turning over this may not apply, but maybe some of the other troubleshooting issues could be helpful.
https://www.rx8club.com/series-i-do-...utputs-155947/
Worked for me once.
Scroll down to the immobilizer section, if it's turning over this may not apply, but maybe some of the other troubleshooting issues could be helpful.
https://www.rx8club.com/series-i-do-...utputs-155947/
#8
i re routed the obd port to a power source but it comes on but no communication is there a way to to connect the two grounds and the main computer just to seee whats going on.
#9
You gonna eat that?
iTrader: (1)
I assume you inspected the port to ensure all the pins are intact?
The following users liked this post:
heyheyheyhey (12-12-2022)
#10
yes i did . made sure they where all not spread appart. i took a multi meter to the pin 16 and no power. i checked all my fusesing inside and out. and even changed all the ones in the cabin. still obd was not getting power. i then routed a fused power to pin 16 and plugged in my obd scanner and it powered on. but i dont think the neg and the pin 2 are communicating with the car. whats your thoughts.? thanks for responding so quick.
#11
You gonna eat that?
iTrader: (1)
yes i did . made sure they where all not spread appart. i took a multi meter to the pin 16 and no power. i checked all my fusesing inside and out. and even changed all the ones in the cabin. still obd was not getting power. i then routed a fused power to pin 16 and plugged in my obd scanner and it powered on. but i dont think the neg and the pin 2 are communicating with the car. whats your thoughts.? thanks for responding so quick.
I'm not skilled at electrical troubleshooting.
My only suggestion might be to try another OBD port if the wiring isn't a challenge.
If there's a plug in connector it might be worth a shot.
#12
Registered
Not sure about the radio, but for the fuel pump did you happen to remove the emissions secondary air pump? Some people remove these and the tube that goes to the exhaust manifold while they have the engine out. On the bracket of the secondary air pump should be a fat resistor pack for the fuel pump.
However you said you are seeing voltage at the fuel pump, I do not familiar enough with the circuit to know if the resistor module being removed would prevent you from reading any voltage.
I do know that if you remove the resistor pack you will be able to crank and sputter the engine but not start.
However you said you are seeing voltage at the fuel pump, I do not familiar enough with the circuit to know if the resistor module being removed would prevent you from reading any voltage.
I do know that if you remove the resistor pack you will be able to crank and sputter the engine but not start.
The following users liked this post:
BigCajun (12-12-2022)
#14
you are right donobre.
as i stuck my contorted body i could see there was some wires that showing wire, could short out so i bought a brand new obd port and will fix the wires and not back power it like you suggested. im wonderin also if i have have some kind of short to grounding problem since raidio , fuel pump doesnt prime....any thoughts...
#22
you know something. I forgot all about the ignitiion condenser. i had a snapped plug and the other part was missing under the MAnifold. I read that it can cause all kinds of issues. on an rx7 the ecm,pcu and a host of other issues stop car from starting. and i just read some on the rx8. I forgot as its taking so long to come. I just reached out and its coming. My appologies. maybe this will help this issue. ill keep you posted.
#23
sorry Donobre for wasting time. I turn on the ignition and all the dash lights up and even the check engine which is supppose to mean it has connection with the computer right. but this Condensor seems a key as well.
#24
Modulated Moderator
iTrader: (3)
The condenser won't make it not start. Its more of a filter and isn't necessary for spark functionality
What you need to do is get a very detailed look at a wiring diagram... and then start tracing power in the circuuts you dont get oroper oower in. Hioefully rhen you will be able to find where the breach is.
Fuses, relays, and even wire runs could be causing this... you just need to.logically go looking to figure it out
What you need to do is get a very detailed look at a wiring diagram... and then start tracing power in the circuuts you dont get oroper oower in. Hioefully rhen you will be able to find where the breach is.
Fuses, relays, and even wire runs could be causing this... you just need to.logically go looking to figure it out
#25
aw man here i was excited...lol. but your are very versed in the rx8 world. I have identifix. I know this sounds lame but what wiring diagram am i looking for all of it? i can do that as well.