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  #21  
Old March 11th, 2006, 03:56 PM
Antonios
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Antonios Hadjigeorgalis
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OK, Back to the Oxygen sensors.

I just tested mine using the method outlined in the EFI test procedure:
http://www.rangie.com/files/167_394.jpg test #27, 27a
http://www.rangie.com/files/167_395.jpg Test #27b

I only did test 27b since it was simple and I was clear on what was necessary. What's not so clear are the results.

Both results were changing the whole time. The left hand result was staying at .013V quite a bit and fluctuating up to .8-.9V. The right hand result was fluctuating constantly from .023V-1.250V

I'm not exactly clear on how to do tests 27 & 27a.

On 27 it shows the ohm meter connected between the #4 wire and the 87A slot of the fuel pump relay plug. There is also a line connecting wire #4 to the 85 slot of the relay plug. Does this mean it needs to be connected with a separate wire while performing the ohm meter test?

On 27A, it shows a loop between 87A & 30 in the relay plug. Like above I assume that means they need to be connected while measuring the volts at the O2 sensors, correct? And how exactly do I test the voltage at the O2 sensors? Do I have to go through the insulationon the wires?
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  #22  
Old October 3rd, 2007, 09:01 PM
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Charles Galpin
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Antonios, what was the outcome of this? Did you get it resolved?

I have the *exact* same symptoms and it's happening way too frequently for comfort now. Practically every time I drive it this happens at least once. Last night it happened and I noticed this time that I heard a relay click right before the rough running/low idle/fuel smell/stall condition, and then a click before it returned to normal.

thanks
charles
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  #23  
Old October 3rd, 2007, 09:05 PM
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The really bad running was solved by replacing the vehicle speed sensor. BUt I was still getting the occasional stall. The occasional stalling stopped when I swapped my O2 sensors left to right. I was going to replace them but I thought I'd try swapping them first and it never stalled again.
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  #24  
Old October 3rd, 2007, 10:02 PM
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Problem gone is always a good thing!

Hopefully it will stay that way.
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  #25  
Old October 4th, 2007, 08:01 AM
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Charles Galpin
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Thanks. Is there any way I can isolate it down to the VSS? My O2 sensors are new to me, but supposed to be god. I guess I can swap my old ones back in to see if anything changes. Otherwise I'll just replace the VSS and go from there.

thanks
charles
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  #26  
Old October 9th, 2007, 10:32 AM
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Charles Galpin
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I can't find the VSS on my 94! Is it the little box mounted to the drivers side frame that the speedo cable goes into?
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  #27  
Old October 9th, 2007, 11:00 AM
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Loic Fabro
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Quote:
Originally Posted by cgalpin
Thanks. Is there any way I can isolate it down to the VSS? My O2 sensors are new to me, but supposed to be god. I guess I can swap my old ones back in to see if anything changes. Otherwise I'll just replace the VSS and go from there.

thanks
charles
I have a set of (old) o2 sensors you can borrow if you want. They are not new but appeared functional to the seller. I assume that you old ones are good too?
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  #28  
Old October 9th, 2007, 11:14 AM
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Charles Galpin
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Yeah I can try swap out my old ones as well. I just wanted to take a look at the VSS and see if there were any visual signs of problems.

I might want to try swap a few parts with you if you willing though - stepper motor, tps or whatever makes sense to try

thanks
charles
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  #29  
Old October 11th, 2007, 06:13 PM
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Charles Galpin
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Well swapping the O2 sensors with my old ones hasn't helped so I guess I'll replace the VSS. Let hope I'm just not throwing parts at the thing.
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  #30  
Old October 16th, 2007, 08:04 PM
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Charles Galpin
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Quote:
Originally Posted by cgalpin
Well swapping the O2 sensors with my old ones hasn't helped so I guess I'll replace the VSS. Let hope I'm just not throwing parts at the thing.
$125 down the drain. Just got a code 03 but that appears to be related to the memory clearing.

dag nabbit.
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  #31  
Old October 22nd, 2007, 11:51 PM
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Charles Galpin
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Bugger. I thought I had this licked after finding some small holes in the air intake tube between the maf and intake as it ran without incident for a few days. Yesterday It happened again with a code 44 thrown (Lambda sensor A - left bank).
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