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Transmission Arrow Dull and Flickering, no pattern, not flashing, no transmission symptoms

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rasense
Posts: 18
Joined: Fri Sep 08, 2017 9:53 am
Year and Model: 1998 V70R Saffron
Location: Lyons, Colorado
United States of America

Transmission Arrow Dull and Flickering, no pattern, not flashing, no transmission symptoms

Post by rasense » Wed Sep 12, 2018 5:22 pm

Hi All,

1998 V70R 186K miles

My transmission arrow has some bizarre behavior. It flickers, is dull and only comes on (but never fully on, and always dull) after the car has warmed up. I have replaced the Mode Selector Switch (SEW), but not the PNP switch, as it doesn't exhibit any PNP failure symptoms. In fact, it doesn't have any transmission symptoms--shifts normally. When pressing the "W" for Winter Mode, the arrow lights up to full strength. When "W" is turned off, it goes back to flickering (not flashing as with tranny failure) and fading in and out with no apparent pattern except for being more obvious and consistent when I am on the gas pedal. It seems to not happen when I put the car on cruise control, or maybe it is just really dull so that I can't see it. In all reality, it is just annoying.

I have taken it to my local indy and they found nothing wrong and no transmission codes either. I'm guessing that it is a bad ground somewhere, and that is what the indy chalked it up to, but want to look for anyone who has had something similar before I go about testing wiring (which I probably won't do anyway).

Thoughts!?!? Thanks in Advance

DrewsT5
Posts: 56
Joined: Mon Mar 28, 2011 11:47 pm
Year and Model: '95 850 T5 Wagon
Location: Laguna Hills, CA
United States of America

Re: Transmission Arrow Dull and Flickering, no pattern, not flashing, no transmission symptoms

Post by DrewsT5 » Thu Sep 13, 2018 5:46 pm

I have the same thing on my 855. Always have had it since I bought it from the PO. Never could figure it out. I came to the same conclusion too - that it is a bad ground somewhere. My dash is loose and the arrow light flickers when going over bumps. I demonstrate that here...

https://photos.app.goo.gl/ChfrV8K6y596cVP49

scot850
Posts: 5324
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
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Re: Transmission Arrow Dull and Flickering, no pattern, not flashing, no transmission symptoms

Post by scot850 » Thu Sep 13, 2018 7:31 pm

The dash boards on these cars break their mounts over time and the whole assembly can move. If the speedo is moving as per the attachment above it may have been damaged by someone not installing it correctly or one of the connectors on the back is not fitted correctly.

I would suggest removing the dash top and look at the speedo housing, removing it if needed to check it and the circuit board for damage or broken track.

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

rasense
Posts: 18
Joined: Fri Sep 08, 2017 9:53 am
Year and Model: 1998 V70R Saffron
Location: Lyons, Colorado
United States of America

Re: Transmission Arrow Dull and Flickering, no pattern, not flashing, no transmission symptoms

Post by rasense » Thu Sep 13, 2018 7:48 pm

Thanks, guys. Besides the annoyance, I suppose I can rest easy with it since it seems you have at least a similar problem with no negative results. Mine isn’t quite as affected by bumps as yours is @DrewsT5, as it is on a lot of the time, and does not come on full strength like yours seems to, but guessing it has a same or similar cause. Maybe someday I’ll be inspired to take the dash apart. Thanks again.

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