SR20DE Sentra Idle

SON240sx Automotive
1

So my GF’s little brother’s Sentra is acting up.
2000 SE w/SR20DE

When at Idle or when the Revs go down, the Car dies.

I pulled the Code with my OBDII Datalogger and got code PO170 (or 171)

Basically it states the system is too lean.

What we have done since the problem is as follows:

  • Took apart MAF and cleaned it thoroughly
  • New Spark plugs
  • Cleaned Distributor Cap
  • Checked battery Voltage

After all this, the car feels a lot better but still dies when we let it idle.

It starts right back up after it dies.

The Code has not returned but the problem is still there.

Any ideas?

I figured you SR boys might know a bit more.

2

Okay, So I mentioned I had a Data logger and found this.

When at Idle, the o2 voltage is 0.94

At full throttle, 02 stays put at 0.00.

This should be the other way around!!!

The thing does oscillate under normal operating conditions.

Is my sensor dead? I thought dead sensors didn’t move.
Is it installed backwards?

3

Try here: http://www.sr20forum.com/

You might have some better luck.