Hello Members, I have a question to ask

I have a 92 Civic with a D16z6 swap with a P28 ECU, the car had an AEM UGEO wideband in the car when I bought it , the previous owner was planning on doing a boosted setup, I was wondering what the wideband should be running at, it seems like the car is running rich, just crusing with about 1/2 throttle the gauge reads any where from 11.9 to 12.2, nothing higher and at an idle the gauge reads about 11.1 to 11.4, which seems to me like its running really rich, as far as I know the motor is completly stock, from what I understand the gauge should read about 14's at 1/2 throttle or am I incorrect ?? It has been really cold here in good ol North Dakota, I'm sure the cold weather has an effect on how rich or lean the car should be running, is it safe to run the car at these number

Thanks for all the assistance I appreciate it

Thomas

 

yes that is really rich, idle should be about 14.7, part throttle around 13-14

 

I second that. Is the computer chipped at all? Just wondering if it's running a different map. Any codes?

 

as far as I know the ecu is not chipped, its not throwing any codes at all either.

 

I would start checking sensors then, like O2 sensor, MAP, TPS. Pull a plug out, and see if it's black just to confirm what the A/F gauge is telling you. Maybe the wideband O2 sensor is not working correctly.

 

just got ahold of the previous owner, and he said the ecu is chipped

 

Well looks like you found you're problem then. Get a stock map then burn it onto the chip and you're in business.

 

^^^ beat me to it.

chip = why it's running rich.
remove J1 (just above the chip) and you'll be back to the stock program again.

that is IF you're still running the stock injectors.

 

or you can cut jumper j1 and the ecu will revert back to the stock map. some people have even soldered a cheap switch to it so that they can switch back and forth between the chip and the stock map when they want to.

edit: ^dayum, beat me to it lol

 

The chip that was in the ECU said Vtec 4800, redline 9000, and manufacture sticker said Skunk2 Racing, so it seems to be some cheap ebay chip that had bad fuel tables, a good friend of mine got her all tuned up with the correct fuel, thanks for all the answers and help I greatly appreciate it

 

Good stuff man, glad you got it all worked out.

 

Thank you and I am glad she is all figured out, it was no fun getting 150 miles out of a full tank of gas haha

 

Haha yeah i bet.

 

150 miles to a tank would SUCK! Glad you got it figured out. So does it run better now? Just curious.

 

WOO Someone else from ND.

 

oh hell yes the car runs 100x better haha !!

 

i gotta take you up on that ride sometime thomas...glad to hear she's running great....yup the plans were to boost her ...o0h do i miss her .....but im glad it went to good hands!