Hondata

I have a similar problem.

https://www.hondata.com/forum/viewtopic ... 6&start=15

Interested to see what you find. My voltage to the ECU is consistently about .1v to -.15v below the battery. I don't play with it too much as I still have my stock ECU that works just fine.

No not yet. Hope to do that soon. I run with the stock ECU almost all the time and fiddle with this one when I have spare time..

Question: Is there an acceptable voltage drop? Or should it be exactly the same as the battery? Voltage at the ECU is about .4v lower than the battery which is very ...

Update:

Still having problems, but it works much more consistently now. No more DB comm error, but still occasionally does not work properly.

When it's not working, the green LED is not lit and the one below it blinks red. What does this mean? It's not listed in the kmanager troubleshooting page ...

Update:

Has been doing much better lately. I can either start the car with no codes, or it goes away much quicker (1-2 minutes of driving).

The voltage at the ECU should be same as the battery right? It seems to be consistently about .4-5v lower.

Crank at battery is 11.7v. Have not had a chance ...

update:

Tried again and voltages seemed ok.. between 14.3 and 14.5 while on. I left it in to drive around the whole day. Usually I had been plugging in the stock for daily driving as I didn't want to run the car in limp. The bottom red button flashes and the CEL comes on in limp mode but goes away ...

Sorry should have left the pins on longer..

While on, it sometimes jumps from 14.5v to all over the place. I saw 10, 3, 0.7.. etc.

Obviously that sounds like the problem? The bottom light on the kpro was flashing red as this was happening.

There was a brief period where the light was green. The ...

Ignition on engine off at 12.25

cranking it dips to 10.3-4

engine on sits at 14.5

Sorry how do I do that?

a2 = +
a4 = ground

How do I measure while the ecu stays plugged in?

I put the car in open loop to try and ignore the o2 for a bit, and I got a daughterboard communication error. It still periodically will go into limp mode, but it is less often than before.

I put a multi to the battery and measured 12.65 while off and 14.75 while on with no lights/radio. 14.6 with ...

Update again..

Same thing. Drove it around during the day and tried again at night. Back in limp mode. p0134 still up. I don't want to clear it in case it doesn't come back but the car is still limp.. I'm starting to think it's a car problem?

p0134 and limp with kpro

no codes/cel and all fine ...

Update:

I changed my spark plugs. They were the original, and there was lots of wear on them.

After doing so, I plugged in the kpro and received p0134, primary 02 sensor no activity connected. This code does not come up with the stock ECU. The car also did not run in limp mode on this code. I ...

Is there something with the car or unit I could check first?

I don't want to try and get my money back and buy a new one, or send this one in to be checked if I receive a confirmed working unit and I still have the same problems. If you check that datalog i posted, it looks like the 02v ...

40719.

I was using my stock ecu over teh weekend but put the kpro back in yesterday afternoon and it worked properly. I was able to take a datalog, though I didn't do anything crazy just regular driving to the store. I probably drove it around town for an hour yesterday afternoon with multiple ...

help!

2002 RSX base
40719
kmanager 4.3.2.0
37820-pnd-a06 2062-603593 0e07
Factory base rsx map with immobilizer disabled
Car has no mods. IM Ground is moved to cylinder head.

I am brand new to this, but I feel that I have done sufficient research and that I haven't done anything crazy. I bought ...