My car has been running with pm6 for about a week. I finally got around to installing the pw0 and now it runs horrible on the highway. It idles fine and pulls hard if you get on it, but at cruising speeds (65-70) its missing real bad. I till have one o2 sensor but its its spliced into 2. It was running like this with pm6 mind you. The only thing thats changed is the ecu. Connections were soldered, not taped. Could it be the v-afc that was already in? I didn't change any of the wiring on it. My speedo isn't working so I'm getting a code for that (17) and also one for the vtec solenoid (21). But I can't see that causing my problems. PLEASE any help will be appreciated!

 

your speedo might not be working because the cable might have pop'd out of the vss, or the vss might be bad. also you can't have both of the 02 sensors spliced into the same pigtail. they have to be wired seprate or the computer wont read it correctly. pm6 only looks for 1 o2 while the pw0 is looking for two when all it see's is one with ur current setup.

 

Gear is busted in tranny is why the vss doesn't work. O2 sensor is split off into two different locations on the ecu. vtec solenoid code is because its not hooked to the ecu, the afc is engaging vtec.

 

it sounds like you have kinda "piggybacked" the vtec, correct?
to me it sounds like ur wiring is the problem, and you were running a CRX/Civic Si ecu with a b16

 

unbelieveabe this still happens with all the info on the net ..they are different ecu's ,,you need to run 4 extra wires to the ecu pins for the pw0 and pr3 ecu's...1 for the 2nd o2 sensor dont splice 2 into 1 wire...1 wire for the vtec solenoid...1 wire for the vtec pressure...1 wire for the knock sensor..and 1 ground off the vtec pressure..

Without running those wires it will bareley start up and want to die,,run pig rich and probably only rev to 3000 rpm i think it goes in limp mode without the knock sensor...so hook up the wiring correctly and reset the ecu and enjoy

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bag &raquo;</TD></TR><TR><TD CLASS="quote">unbelieveabe this still happens with all the info on the net ..they are different ecu's ,,you need to run 4 extra wires to the ecu pins for the pw0 and pr3 ecu's...1 for the 2nd o2 sensor dont splice 2 into 1 wire...1 wire for the vtec solenoid...1 wire for the vtec pressure...1 wire for the knock sensor..and 1 ground off the vtec pressure..

Without running those wires it will bareley start up and want to die,,run pig rich and probably only rev to 3000 rpm i think it goes in limp mode without the knock sensor...so hook up the wiring correctly and reset the ecu and enjoy</TD></TR></TABLE>

Apparently I wasn't clear... when I installed the pw0 the 4 wires where ran. The only one that wasn't hooked up is the one for the vtec because its still wired to the output off the vafc. One o2 sensor is split into two different locations on the ecu. Idles fine, runs good under a load but at cruising speed it runs like ****. I'm leaning towards the afc being the problem. Any one else offer some good advice?

 

2 x o2 sensors will fix the problem. Honestly. Splicing o2s together SUCKS for pw0 ECUs. I learned the hard way. I had the exact same symptoms as you, then installed them backwards and it didnt work and then installed them in their correct cylinder banks and now it cruises like any other civic on the freeway.

 

Thanks so much! I was hoping to hear something like this.

 

With vss code you wont have Vtec,


First remove the codes.

 

throw that vafc junk out...hook it up the right way and play with your map sensor vacuum lines you might have them wrong vacuum lines hooked up to the map...switch the lines that come off the throttle body and see if that cleans it up...thats is what was screwy on a customer car of mine

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 13g-crx &raquo;</TD></TR><TR><TD CLASS="quote">

Apparently I wasn't clear... when I installed the pw0 the 4 wires where ran. The only one that wasn't hooked up is the one for the vtec because its still wired to the output off the vafc. One o2 sensor is split into two different locations on the ecu. Idles fine, runs good under a load but at cruising speed it runs like ****. I'm leaning towards the afc being the problem. Any one else offer some good advice?</TD></TR></TABLE>

yeah but you have to hook the vtec wires to the ecu then splice off them and run them to the vafc,,cause if you just run the wires to the vafc the ecu wont know whats going on and throw codes...and there will be no vtec

pm me if you need any help

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 13g-crx &raquo;</TD></TR><TR><TD CLASS="quote">Gear is busted in tranny is why the vss doesn't work. O2 sensor is split off into two different locations on the ecu. vtec solenoid code is because its not hooked to the ecu, the afc is engaging vtec.</TD></TR></TABLE>

That has nothing to do with your VSS. Vtec WILL NOT WORK without the VSS. The VSS is located behind the spedo in your dash cluster. Either your cable snapped inside the housing, your speedo cable came loose from your tranny, your missing screws from the back of your speedo cluster (which will give you a code 17. this happened to me and it fixed all of my problems once I put a missing screw in.) or the speedo cable poped out of the cluster. Remember too that might need to adjust your idle air screw or your TPS.

I'm running a single o2 sensor on my PW0 B16 with zero codes and flawless function.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bejita &raquo;</TD></TR><TR><TD CLASS="quote">

That has nothing to do with your VSS. Vtec WILL NOT WORK without the VSS. The VSS is located behind the spedo in your dash cluster. Either your cable snapped inside the housing, your speedo cable came loose from your tranny, your missing screws from the back of your speedo cluster (which will give you a code 17. this happened to me and it fixed all of my problems once I put a missing screw in.) or the speedo cable poped out of the cluster. Remember too that might need to adjust your idle air screw or your TPS.

I'm running a single o2 sensor on my PW0 B16 with zero codes and flawless function.</TD></TR></TABLE>

Off subject... I can remove the part out of the tranny that the cable goes into, slide the cable down into it and spin it with my drill and it registers as mph on my cluster. You can jack the car up, spin the front wheels with the car in gear and the gear that feeds the speedo cable isn't turning. I'm assuming that its something internal with the tranny. I could be and hope I'm wrong. And yes vtec does work with out the speedo. The afc reads rpm and sends 12vlt at a given set point with no regards to mph.

Whats puzzling also is that even with the 4 wires ran (two replaced at the ecu) I can put the stock pm6 in and it runs fine!?!?!?! Thats why I was thinking that it has something do with the afc wiring for the pm6 and pw0 could be different.

Thanks for the help so far.

 

buy a new vss and fix the stuff that was ghetto rigged...you dont need a vafc for a stock swapped car...<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 13g-crx &raquo;</TD></TR><TR><TD CLASS="quote">

Off subject... I can remove the part out of the tranny that the cable goes into, slide the cable down into it and spin it with my drill and it registers as mph on my cluster. You can jack the car up, spin the front wheels with the car in gear and the gear that feeds the speedo cable isn't turning. I'm assuming that its something internal with the tranny. I could be and hope I'm wrong. And yes vtec does work with out the speedo. The afc reads rpm and sends 12vlt at a given set point with no regards to mph.

Whats puzzling also is that even with the 4 wires ran (two replaced at the ecu) I can put the stock pm6 in and it runs fine!?!?!?! Thats why I was thinking that it has something do with the afc wiring for the pm6 and pw0 could be different.

Thanks for the help so far.

</TD></TR></TABLE>

vtec may work without the speedo but the car is still running in limp mode, fix the speedo problem hook everything up the right way and then attach vafc if you want (i hate those things)...its like having a hot chick that smells bad it just doesnt work

 

---its like having a hot chick that smells bad it just doesnt work---

Man that is a perfect description! But EW I have been there. The musk is not good.


Modified by b16er at 11:10 AM 3/12/2007


Modified by b16er at 11:11 AM 3/12/2007