Question about 1993 Cadillac DeVille

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Speed sensor? Our speedometer was jumping all over the place and making the transmission jump gears, we replaced the speed sensor and it ran great for about a day, now its doing the same thing. There's oil all over it, could this cause the problem? Someone says it the transmission going out. It only starts to jump around after 50mph. Any advice would be greatly appreciated.

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  • 373 Answers

If there's oil all around the sensor, you have to find out where it's coming from. Is there an o ring out of place? Sounds like the sensor was installed incorrectly. . Try pulling it out, cleaning it up, and carefully re installing it. Good luck, it doesn't quite sound like the transmisson. Pressurized systems cannot leak. Let me know how you make out and please rate solution

Posted on Jan 07, 2013

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Posted on Jan 02, 2017

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MATRIX_MMX
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SOURCE: dead batery

Dear lilgothic

You may have just simply had an issue with the alternator. Sometimes these can become stuck or not put out enough power to re-charge the battery, and this is why your battery was going flat. However a bad earth, open circuit or other similar electronic fault could cause your battery to drain and go flat. In addition to this, if your battery was to develop sulphur crystals (white solid crystal like things appearing from inside the battery) then this can cause your problem.

Each and every way you look at this, the main thing here is that your battery was not providing enough power to your ignition system and was either totally chargeless or about "flat" at time of need. So changing the battery was sensible (no point staring at something as interesting / annoying as a flat battery)

Might also be a good idea to perform a routine service on components in order to prevent any further mishaps. So changing things like your oil, filters, HT/ LT leads and spark/ glow plugs will all be of benefit. Also might want to take a look at that alternator, and even possibly the ignition coil. While about all of this, a simple visual inspection of your drivebelt and timing belt/ cam belt will possibly prevent something fatal from happening to your engine (if a timing belt breaks while engine is in service, then you will find that you will be replacing costly components if the whole thing is not KAPUT).

I hope that all of this has been useful and that the further advice will keep your vehicle in tip top condition.

Yours sincerely

Oz


Posted on Jul 07, 2008

emissionwiz
  • 76848 Answers

SOURCE: my 1994 cadillac deville my speedometer stays on zero

replace the vehicle speed sensor on the transmission, here is a picture.4f6c07c.jpg

Posted on Apr 10, 2009

  • 135 Answers

SOURCE: trying to change the transmission speed sensor(the one that can be changed by removing the front tire) on 95' cadillac deville

the vehicle speed sensor is located on the top of the transaxle on the passengers side. look for wires on top of trans axle on passengers side.if more problems finding it let me know.

Posted on May 15, 2009

ftw1952
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SOURCE: I HAVE A 1998 CADILLAC CATER. PER MY SMOG CHECK I

yes

Posted on Feb 18, 2010

  • 7 Answers

SOURCE: Ran out of gas, replaced gas try starting, wont

hit the key five times without trying to start, just bump the starter, after the fith time turn it over and it should crank

Posted on Mar 24, 2010

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replace the vehicle speed sensor on the transmission, here is a picture.4f6c07c.jpg

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