I'm thowing 2 codes. Code 7 for the TPS and 41 Primary oxygen sensor heater. I know the o2 sensor is not plugged in so I can understand why it's coding there. Can the TPS code because of the o2 sensor? Since my swap, the O2 sensor is a single wire where the other is 4 wire. I found what I need to do to do a 4 to 1 splice to get it working.

I've checked the voltages on the tps sensor per the haynes manual. the center one is at 0V or idle and 3.5V WOT. the one next to it that should have 5V running to it does not. I'm not sure if the TPS is shot because this was on my other motor and working fine before the swap, or if this is related to the o2 sensor.

Thanks in advance

 

Which ECU are you running? If it's a p08 Like you should be running then you just splice the white wire from your harness to the o2 sensor. If you're running the incorrect P28 and you thought you could save money by doing that....Then you're going to have get it it chipped and have p08 maps burned to it and do an o2 sensor conversion to get the car to run properly.

 

tps should be .5 closed and 4.5 WOT try adjsuting it

 

i'm running p28 ecu in the car. i swapped the motor because crankshaft was bent and spun a rod bearing. The shop I picked up the motor from said the ecu would be fine with this motor. my original was the 1.6L. So I should be good in splicing the wire. Worse case I'll just drop the other exhaust back in with the 4 wire. The code drops when i hook that up to the car.

I have tried adjusting the tps and when i get close to .5V for closed idle the idle jumps to around 1200 rpm's. I've tried adjusting the cable to drop the idle down, but no change. when the idle is close to .5V, WOT drops down to 2.6V. i'm thinking the sensor is shot. my dad was tossing the intake on my old motor around like it was garbage and probably killed the sensor in the process.

I wrote the numbers down backwards when I was taking the voltage readings. The yellow/white wire was getting 5V. The red/blue (center) is at 0V idle and 3.5ish WOT. I need to wait for it to cool down more outside before I can go messing around on the car some more.

With the tps sensor throwing codes, is it possible for it to be bad; with finding someone who has one to borrow so i can test it. Or will the code drop when it's adjusted properly? Haynes manual was saying if the numbers are not matching close, to replace the sensor.


Modified by skipunk at 6:18 PM 7/5/2007

 

bump

 

This will have everything you'll need to fix your ECU issue http://www.d-series.org/forums...32597

The TPS needs to be replaced unless you plugged the wrong plug into it. Just go to a junkyard a get one.

 

I got the tps working, i removed and reinstalled it. I think it wasn't in right. Now I just need to install the exhaust. I tried doing the wire jumps to a tutorial for the 4-1 conversion but it still throws code 41. The original o2 sensor works fine. My dad ended up snapping the bolts from the exhaust to down pipe so I need to get those drilled out. He said he wanted to help while I was at work. He would have been better to just to leave it alone.

The ECU i'm leaving as is. I'm not going to tune this car. it's just a motor to get me from point a to point b until I get my other civic back up and running. It snapped a rod on the way to Cali a few months back and giving its a my mother in laws house while i'm in az, its hard to fix. The damage doesn't to seem as bad as it sounds. The crank is still good and needs to be resurfaced. new bearings and a rod. but I won't know for sure until I can devote more time to it next weekend.

Then I can pick another motor that I want to sup up and take my time on that one.

Thanks for you help.