I'm did a mpfi swap on my 91 civic dx using 89 crx hf intake/ecu/distributor its running okay but has a code 8 which is tdc sensor I think
I wasn't sure what to do with the wire thats was in b12 its a white/red stripe and I just taped it off. Is that right? Also do I let a3 and a7 stay disconected?(these are original dx wires)

 

C2 was moved to b12 and you just left the original b12 hanging? That should be fine.

You will need a new distributor to get rid of that TDC code. Also try a PM6 or PR4 ecu instead. The HF ecu only has a 5k redline.

 

Oh ok its not going to mess anything up having that code right? Drove about 60 miles on it so far and its awesome and I got hf stuff cuz it was cheap I spent like 65 total

 

Also, I'm noticing a few walk-throughs are missing the TPS wire flip.
If you haven't already, make sure you flip the locations of the two outer wires on the TPS.

 

Yeah I knew that but I didn't know the plugs are different so at first I wired the crx plug on with wires switched then read about the mpfi tps plugs already switched wires so put them color to color

 

Oh and redlines more than 5k I've took it to 6k I think its pm8 ecu
Is there anyway to test the tdc sensor? And can I swap one from my old dist?

 

How do u tell which white wire on the distributor is the bigger one they look the same? I put the stock dpfi plug on dist side(left mpfi plug for the 2 blue wires) and might have the white ones mixed up could that cause a code 8?

 

Here's how its lookin still working on cleaning and painting engine/exterior parts as I go

 

if you have the 2 white wires switched, it won't even start - if it runs, you have them correct

 

Oh damn I was hoping that was it can anyone tell me how to test that sensor though?