Faulty O2 sensor causing sputtering ?

Goobdog · 03-22-2005, 12:36 PM

Is this possible ? My car has been sputtering ever since I ran a little race gas. I know leaded gas is bad for the sensor but I never had a problem on my other car and I ran leaded fuel all the time in it. The car has new plugs, wires and no boost leaks. In MMCD I cant figure out which option reads the O2 because none of them seem right, one is a voltage but it says 2.96v and the other is a percentage number. Any thoughts ?

JessesTalon · 03-22-2005, 02:01 PM

Quote:

Originally Posted by Goobdog

Is this possible ? My car has been sputtering ever since I ran a little race gas. I know leaded gas is bad for the sensor but I never had a problem on my other car and I ran leaded fuel all the time in it. The car has new plugs, wires and no boost leaks. In MMCD I cant figure out which option reads the O2 because none of them seem right, one is a voltage but it says 2.96v and the other is a percentage number. Any thoughts ?

if you think its the gas then just keep filling it up to 92 so it gets it out of the system... maybe run fuel injector cleaner.

Change anything since the race gas or right before the race gas?

JessesTalon · 03-22-2005, 02:02 PM

I'd also try resetting the ECU, It doesn't hurt to try. Give the ECU a chance to relearn everything from scratch

Goobdog · 03-22-2005, 06:34 PM

Thanks for the info. I ran some injector cleaner a few days ago actually. Ill try resetting the ecu.

steve · 03-22-2005, 10:23 PM

Quote:

Originally Posted by Goobdog

In MMCD I cant figure out which option reads the O2 because none of them seem right, one is a voltage but it says 2.96v and the other is a percentage number.

You want O2-R if you have a choice between O2-F and O2-R. I forget at which release the second sensor got added but it was added for 3000GT's and it looks like the rear cyl bank is at the same location as our O2 and the front cyl bank is a command outside the range of DSM's datalogger table.

Steve

Goobdog · 03-23-2005, 08:23 AM

Quote:

Originally Posted by steve

You want O2-R if you have a choice between O2-F and O2-R. I forget at which release the second sensor got added but it was added for 3000GT's and it looks like the rear cyl bank is at the same location as our O2 and the front cyl bank is a command outside the range of DSM's datalogger table.

Steve

Thanks alot for that info.

Goobdog · 03-23-2005, 01:50 PM

I figured it out, my brand new plugs wires were bad out of the box