Code 68 and stalling... - Defender Source
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  #1  
Old May 25th, 2008, 08:19 PM
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Mike Doligalski
'95 D90 ST
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Code 68 and stalling...

Hey All,

I am away for the weekend and we've been driving the rover a lot these past couple days. It's been running very well without any problems until this afternoon. All of a sudden I noticed the speedometer not working and then I got a check engine light. The code is 68. The rover still runs strong and normal until I drop the clutch when I pull up to a stop light. Then it will stall like it just can't keep idle. It is not stalling at every light, but it does seem to be getting worse (I also suspect that it's only stalling when I stop after going highways speeds with the RPMs up). I made it to where we're staying for the night and won't be home until tomorrow to check the work book. Anyone have any ideas as to what the root of the problem is? Is it cool to drive it home tomorrow?

Thanks in advance for the help! -Mike
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  #2  
Old May 25th, 2008, 08:22 PM
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Phillip
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Code 68 - Road speed sensor


probally be fine.
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  #3  
Old May 28th, 2008, 12:45 PM
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Mike Doligalski
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Phil, thanks for the quick id of the code.

I've done some research and the VSS does seem to be the culprit (as the fault code implies) to all of my issues. The one thing I cannot find is what the "test 25 of continuity test procedure" is. Anyone have any idea how to check the speed sensor for signs of life? I'd like to be sure that it is completely dead before I shell out for a new sensor.
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  #4  
Old October 22nd, 2009, 04:18 PM
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Steven Miers
95 D90 ST
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I was having this problem with my new (to me) 95 Defender. It was intermittently blowing the wiper fuse, quickly followed by the Code 68/stalling problem. Every time the wiper fuse blew, the tachometer would stop working as well.

In my case, the problem was an almost-but-not-quite broken wire (green) leading to the tachometer itself. Once I repaired this, the problem went away completely.

Posting here in case it helps anyone. Back to lurking.
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  #5  
Old October 23rd, 2009, 12:59 AM
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Ethan
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If you know someone with a scope, you could check the signature coming out of the speed sensor, and at the ecu. If you see irregularities, then you could confirm the sensor as the culprit. You could also try cleaning up the plug on the sensor (if it's accessible) with some contact cleaner/promoter if you suspect it's just a bad/corroded connection. I bought some that worked great on a electrical problem I had on my Toyota.
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