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Ive search and I have service manual but I suck on wiring diagrams I marked my injector plugs but I had someone help me clean intake manifold where I had injectors marked with numbers and it erased when they cleaned it , I was wondering if someone can help me figure out how this cables goes I ve searched , I know someone here has to know just by looking at it.
^ thanks I think my brother figured it out he hate working on cars but he is smart figuring diagrams,plans , **** I don't understand , my sequence per him was
Rear secondary ( white blue line , blue black line )
Primary 2 secondary rear ( white green line ,white blue line )
Primary 2 front ( white blue line , blue black line )
Front secondary ( white blue line , green pink line )
Primary 1 front ( light green red line , white blue line )
Primary 1 rear ( light green black line , white blue line )
I hope is right since Im not putting on intake until sure , He says his right lol
Hi Chino rx3, I'm new to the forum. Bought an rx8 with bad engine that I changed. First plugged the injectors wrong, inversed primary 1s and primary 2s middle. Car ran bad: did not hold idle below 2K rpm, low power but could go to higher revs 8k+.
Now replugged the injectors according to your brother sequence as is looks right from the different diagrams put together. The car runs even worst: still no idle, won't go past 3-4K rpm.
The car gives me no codes and ignition wiring was double checked, harness and plugs.
Could the blue black lines of Rear secondary and Primary 2 front be inverted knowing I assumed the primary 2s come together from the main wiring loom?
Any help or idea as to what could be wrong is greatly apreciated.
This labeling diagram is actually NOT CORRECT at least for my LHD model (the picture shows a RHD). You follow this, she won't run right (and some of these colors arent even there). And although a picture usually tells a thousand words, its tricky to look at this and match it up with the harness anyway so I'm posting a better method for future reference.
If you've either done a wire-harness removal for an engine rebuild or yanking the manifold, you may end up in the situation where you're scratching your head wondering.... "Oh $hit!....do the injector connectors go this way or that way??"
It turns out its actually "easy" once you understand how the engineers built the harness. In my wire colors below, I will ignore the White w/ Blue stripe wire which is present in all 6 injector connectors.
Installing the injector connectors in groups is easiest.
First, the "Primary 1" injectors (the red ones in the block). These connectors are marked with a yellow dot on the connector and usually yellow/orange tape on the harness covers. You can confirm they're the right ones because they're the only injectors with Light Green wires going to both connectors. The harness comes toward the injectors from the the area in front of the injectors (front relative to the car). The Front injector is the one with Light Green/Red stripe, the rear injector (longer wire) is the one with Light Green / Black stripe.
Next, the "Primary 2" injectors (the middle two yellow injectors). These connectors have a common wire harness. They also come toward the injectors from the front. Connect the front one first so that you can route the rear one underneath the fuel inlet pipe. The front connector has Blue w/ Black stripe, the rear connector has White w/ Green stripe.
Last, are the Secondary injectors (outside yellow injectors). Both of these connectors come from isolated connectors coming out of the nearby harness (each connector is a short piece coming out of the main harness, you cannot accidentally flop them). The front connector has Green w/ Red strip, the rear connector has Blue w/ Black stripe.
Chino_rx3's post IS the right harness coloring but I updated here for clarity in case you've already connected them all and you want to verify your connector colors in sequence: Yellow injectors (from back to front):
Rear secondary ( blue w/ black line ) - Lone connector in harness (shared with solenoid connectors)
Primary 2 rear ( white w/ green line ) - Both Primary 2 connectors share a harness stub
Primary 2 front ( blue w/ black line ) - Both Primary 2 connectors share a harness stub
Front secondary ( green w/ red line ) - Lone connector in harness coming out of the "main" harness
Red injectors (from back to front):
Primary 1 rear ( light green w/ black line) - This harness has stripes around the end of the harness - my rear injector has orange stripe on the harness and a yellow(ish) paint mark on my connector.
Primary 1 front ( light green w/ red line ) - This harness has stripes around the end of the harness - my front injector has white stripe on the harness.
You'll note that 2 yellow injectors end up having a Blue w/ Black Stripe. Which has confused prior members. When the harness is in the factory position, Its pretty hard to flip flop these without really going out of your way. But if you've had the harness out with an engine rebuild, its not as hard as it sounds. Easiest way to get it right: the Blue w/ Black stripe that goes on the rear-most yellow injector should not have ANY other injector connectors in the same harness (it has the 3 solenoid valve connectors in its harness). The Blue w/ Black stripe connector that shares a harness with the White w/ Green stripe connector is for the middle two injectors (and the Blue w/ Black stripe goes on the front one)
This is why I tried to tell everyone for years to buy the specific service & electrical manuals for their model year RX8 because this changed based on model year. Which none of the people posting their results reference that, or country, etc.
the service manual references then by tape color that are wrapped around each section, but those are known to come off over time. I replaced the factory ones with HD electrical tape in the correct color on all of mine.
Found this a while back. Didn't actually need to use it ... as my connector labeling held up, but perhaps someone will find it useful.
. Edit: This is essentially a diagram of Beernose's above explanation.
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Ive search and I have service manual but I suck on wiring diagrams I marked my injector plugs but I had someone help me clean intake manifold where I had injectors marked with numbers and it erased when they cleaned it , I was wondering if someone can help me figure out how this cables goes I ve searched , I know someone here has to know just by looking at it.
Is there a similar diagram for the series 2 rx8 09
I am also looking for this diagram but for the series 2
Originally Posted by jcbrx8
Found this a while back. Didn't actually need to use it ... as my connector labeling held up, but perhaps someone will find it useful.
. Edit: This is essentially a diagram of Beernose's above explanation.
.
08-19-2012, 10:51 PM
Need help with my fuel injector sequence
