Author Topic: Oxygen sensor replacement (Read 10255 times)

Systema · « **Reply #15 on:** March 14, 2010, 06:36:59 PM »

So I installed the new sensor, and everything went pretty smoothly up until I went to start the car. It started, sputtered out, and died. Now it won't start. It cranks, and it's getting fuel. Anyone know what could be wrong?

KenC · « **Reply #16 on:** March 14, 2010, 07:10:35 PM »

Quote from: Systema;89478

So I installed the new sensor, and everything went pretty smoothly up until I went to start the car. It started, sputtered out, and died. Now it won't start. It cranks, and it's getting fuel. Anyone know what could be wrong?

That has nothing to do with the O2 sensor. You touch anything else under there? The O2 sensor only comes into play when you're up at operating temp.

Systema · « **Reply #17 on:** March 14, 2010, 07:13:29 PM »

^^^ That's what I figured, but I didn't mess with anything else so I don't know what could possibly have gone wrong.

Systema · « **Reply #18 on:** March 15, 2010, 08:33:40 PM »

UPDATE (Just in case anyone cares): Got the car running again, turns out it wasn't actually getting fuel. Bad fuel pump connection. I reseated the wires and everything seems okay on that front.

More importantly, the new O2 sensor fixed all of my problems! I had a really funky idle (sometimes it'd be near-stall low, and sometimes it would be up at 1500), stuttering/hesitation on acceleration, and loss of power all over the rev range, as well as a 1244 CEL code that would go on and off as I drove around. Since installing the new sensor, all of that's gone, including the CEL, which was starting to worry me. All fixed for around $45.

I hope this helps someone else who might be having the same problem as me.

cristimm · « **Reply #19 on:** April 01, 2010, 01:41:08 AM »

Quote from: RED IS 91;89170

As far as length goes just make it the same length as the one you take off.
I believe all bosch 02 sensors are the same.
Wire length says 37 inches.

I don't think that lenght of the wires is relevant. However the quality of the connections is.

KenC · « **Reply #20 on:** April 01, 2010, 12:46:30 PM »

Quote from: cristimm;90308

I don't think that lenght of the wires is relevant. However the quality of the connections is.

True. The length of wire will only increase and decrease the resistance of the circuit, and since the resistance of copper wire is ridiculously low in the first place, a few inches longer or shorter is really negligible.

troman · « **Reply #21 on:** July 25, 2012, 02:50:35 PM »

I just did this with butt connectors, but I think I'm going to go back and re-do it with solder connections. I think the butt connectors might add too much resistance for what the sensor is spec'd for.