View Full Version : would a bad O2 sensor cause my car to stall?


Jestapilot
05-26-2004, 02:00 PM
Driving along today and the car shuttered, then stalled while cruising. All the lights came on the dash, and it promptly started up on its own again like nothing happened. I've already had a CEL for my an 02 sensor several weeks ago, is it getting worse?

oh yeah Mance, you were right about my 02 sensors probably being bad, wasnt long after I installed the sxtb that I got A cel for it.

odelay12v
05-26-2004, 02:26 PM
bosche 13913 for $37.99 i have read about people having problems with aftermarket o2 sensors and i want to preferably only replace them once.. any thoughts suggestions would be great! 96 a4 2.8qm with 109650 miles origional o2 sensors.. now i only get about 190m per tank of gas OUCH.. but i get no cels..? just stalls at red lights

MM120
05-26-2004, 04:27 PM

odelay12v
05-26-2004, 04:56 PM
i got this off the 12v org site but not sure if it was for the 90 or the a4.. i dont mind splicing but i dont want to have to get another set if you know what i mean.. bosche 13913

MM120
05-26-2004, 05:26 PM
This one's for the A4<ul><li><a href="http://www.12v.org/maintenance/repairs/o2sens.php?odb2=yes">http://www.12v.org/maintenance/repairs/o2sens.php?odb2=yes</a</li></ul>

VAP
05-26-2004, 07:16 PM
on the "Lean Code Worksheet" I had people fill out awhile back when the S3 MAF was suspected as throwing codes. Over 90% of all S3-related lean code were on Bosch generic sensor equipped cars. 2nd place was 60k+ miles stock sensors at 7%.

The o-ring kit remedied it but that still doesn't make them good, let alone "right." Spend the big buks in this case. It only comes around once every 60k miles.

odelay12v
05-26-2004, 07:58 PM

eep
05-26-2004, 08:58 PM
Wait, you mean don't use the Bosch 13913? I've had that on my web site for at least a couple of years ... I hope it doesn't screw anyone up.

It used to concern me that the huge price difference between varieties of O2 sensors meant there was some difference in the quality or construction. But I sat next to a guy on a plane once that worked for Bosch and he said there weren't any different sensor grades, just different harness connectors. He was a bit surprised at what prices were for the sensors in the US, but he didn't seem to think there was any moral issue ripping off us "silly Americans." Eh. What I gathered from the conversation was that all Bosch heated thimble O2 sensors are identical up to the wires, so as long as you make a good electrical and mechanical connection, and seal it properly, it should be fine.

My guess is that it's the splice that kills people. Getting some insulated butt splices from Home Depot and using a $5 crimper made for non-insulated connectors (as many people seem to do), then tossing it in the engine bay with no more than a layer or two of electrical tape will not make a good connection - if you're going to do that, just buy the proper sensor.

MM120
05-26-2004, 09:19 PM
They got us again! Can we buy only 2 sensors &amp; splice a second connector to each one to "fool" the ECU into thinking it's getting a reading from all 4 sensors, or will it throw a code?

MM120
05-26-2004, 09:26 PM
is it that way w/ all MAF's?

odelay12v
05-27-2004, 08:16 AM
know what i should do..hmm.. maybee just get ripped off and be safe.. i guess anyone else have any conclusions?

CalG
05-28-2004, 01:50 PM
My understanding is the same as eep's.

Well spilced generics are just fine

CalG

odelay12v
05-30-2004, 10:52 AM