k9sar Posted October 19, 2009 Share Posted October 19, 2009 Just started today. AS I pulled away from a stop sign, making slow accelleration, my speedometer was rapidly jumping between 0 and 40mph or so when I was doing much less. I thought I read about this before but damned if I can find it in the new format. Anyone? Link to comment Share on other sites More sharing options...
GrimGreg Posted October 19, 2009 Share Posted October 19, 2009 Electric speedo gremlins. Link to comment Share on other sites More sharing options...
Precise1 Posted October 19, 2009 Share Posted October 19, 2009 Yep. Remove the entire cluster (not hard at all) and check the connections/tighten the brass screws in the back (ground points) and reinstall. Does it work now?? The next step is checking/replacing the voltage regulator IIRC. I'll have to search for that thread... B Link to comment Share on other sites More sharing options...
Terrano1992 Posted October 20, 2009 Share Posted October 20, 2009 (edited) The next step is checking/replacing the voltage regulator IIRC. 95 electronic speedometer powered directly from 12V. If it has internal voltage regilator, this thing buried somewhere on speedometer PCB. BTW, each gauge (temp, fuel) on 95 "round" dashboard has its own internal VR, not an external one. Me think, the last dashboard with external common VR was made before August 1992 (i.e. before 93 model year). The next step is vehicle speed sensor and harness... Edited October 20, 2009 by Terrano1992 Link to comment Share on other sites More sharing options...
Toby Posted October 20, 2009 Share Posted October 20, 2009 I'm currently replacing my vehicle speed sensor. Cluster demons in these is a nightmare it seems like. Beginning problems could be to test the grounds in the back and check the fuse. Make sure the brass screws aren't loose. Then if that doesn't work put in a cluster you know works. If that doesn't work then it could be the sensor acting all screwy. Link to comment Share on other sites More sharing options...
elliot Posted November 10, 2009 Share Posted November 10, 2009 the speedo on my 94 le has been giving me trouble to but it only bounces up to about 20 mph on the freeway i changed the cluster to no avail and the sensor but both parts were used condition unknown. Link to comment Share on other sites More sharing options...
elliot Posted November 10, 2009 Share Posted November 10, 2009 whats a voltage regulator IIRC? Link to comment Share on other sites More sharing options...
Simon Posted November 10, 2009 Share Posted November 10, 2009 whats a voltage regulator IIRC? He just means a voltage regulator. IIRC= If I remember correctly. Link to comment Share on other sites More sharing options...
k9sar Posted November 10, 2009 Author Share Posted November 10, 2009 I've been watching this, waiting for a hard failure so I can diagnose it. Interestingly, when it 'fails', the speedometer seems to read half of what it should. I wonder if the speed sensor has dual pickup points inside it and one is failing. dunno. I doubt the cops will accept the "I was only doing 45, according to my speedometer" excuse. Link to comment Share on other sites More sharing options...
Precise1 Posted November 10, 2009 Share Posted November 10, 2009 Yours is an automagic I believe. Too bad, I drove my manual without a speedo for years, just watching the tach and being sensible. I don't think I want to try it in the automagic though... Get one from a part out... B Link to comment Share on other sites More sharing options...
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