If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
No voltage from O2 sensor
I am trying to replace an OEM oxygen sensor on an Eagle Talon because
the voltage readings coming from the signal wire didn't seem to be high enough (trying to figure out why an emissions test failed). I purchased an aftermarket Bosch sensor which needs to be spliced in with the current connector. However even after warming up the engine for several minutes and revving it many times, I am getting absolutely zero voltage from the signal wire or any other wire. I exchanged it for another one, and again, no voltage. I put the old one back in, and immediately I see that I at least get some sort of reading that varies with the throttle. The shape of the sensor itself is a little different between the two, but anyone know why I am not getting any voltage whatsover from not one, but 2 brand new O2 sensors?? |
Ads |
#2
|
|||
|
|||
largetalon wrote:
> > I am trying to replace an OEM oxygen sensor on an Eagle Talon because > the voltage readings coming from the signal wire didn't seem to be high > enough (trying to figure out why an emissions test failed). > > I purchased an aftermarket Bosch sensor which needs to be spliced in > with the current connector. However even after warming up the engine > for several minutes and revving it many times, I am getting absolutely > zero voltage from the signal wire or any other wire. I exchanged it > for another one, and again, no voltage. I put the old one back in, and > immediately I see that I at least get some sort of reading that varies > with the throttle. > > The shape of the sensor itself is a little different between the two, > but anyone know why I am not getting any voltage whatsover from not > one, but 2 brand new O2 sensors?? Bad ground? You could bench test it with your torch. Look for the procedure on the web. |
#3
|
|||
|
|||
On Thu, 16 Jun 2005, largetalon wrote:
> I am trying to replace an OEM oxygen sensor on an Eagle Talon because > the voltage readings coming from the signal wire didn't seem to be high > enough (trying to figure out why an emissions test failed). > I purchased an aftermarket Bosch sensor Mistake. Bosch's aftermarket O2 sensors tend to fail early and often. |
#4
|
|||
|
|||
Well I bench tested them all with a blow torch.
The new Bosch ones still show 0.00V at all times. Could it be that I got 2 bad sensors out of the box - perhaps from a bad batch? The old OEM sensor showed voltage readings which were not very high, and also took forever to drop down when I removed the torch. Seems like its bad. So now I've 3 sensors that are no good apparently. |
#5
|
|||
|
|||
largetalon wrote: > Well I bench tested them all with a blow torch. > > The new Bosch ones still show 0.00V at all times. Could it be that I > got 2 bad sensors out of the box - perhaps from a bad batch? > > The old OEM sensor showed voltage readings which were not very high, > and also took forever to drop down when I removed the torch. Seems > like its bad. > > So now I've 3 sensors that are no good apparently. Unless you are killing them during installation by improper/excess use of antiseize or silicone sealer (God knows why you would use sealer on the sensor but stranger things have happened) or you are juggling all three sensors and have subsequently dropped them until their zirc elements cracked, then I would listen to Daniel Stern and everyone else regarding Bosch O2 sensors. They suck to an unbelievable degree. Nearly every car I see with a Bosch universal O2 sensor is also equipped with Autozone "Double Silicone" wires and neon ground effect lights. Go figure. Toyota MDT in MO |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
rec.autos.makers.chrysler FAQ, Part 1/6 | Dr. David Zatz | Chrysler | 5 | March 21st 05 06:33 AM |
rec.autos.makers.chrysler FAQ, Part 1/6 | Dr. David Zatz | Chrysler | 5 | March 6th 05 06:29 AM |
Climatronic Diagnostic Controls | Luís Lourenço | Audi | 1 | November 12th 04 09:22 AM |
rec.autos.makers.chrysler FAQ, Part 1/6 | Dr. David Zatz | Chrysler | 10 | November 1st 04 06:24 AM |
rec.autos.makers.chrysler FAQ, Part 1/6 | Dr. David Zatz | Chrysler | 10 | October 16th 04 05:28 AM |