Jenny Webster Posted March 4, 2014 Report Share Posted March 4, 2014 My speedometer sensor went out a while back. The car would drive OK for about 7 minutes, then it would go all wonky and the speedometer would go out.I got it replaced.Worked fine.Four months later, it went out again --but almost in an opposite fashion. Now as soon as I start it, it is out (and I had to gun it hard to get it to kick into gear) --but if I drive it for a solid 45 minutes, then it starts working again. It is in the shop getting it replaced right now, but I realize there is some other issue at play here. A short? Something?Thoughts? Where it is at right now I am just having the replace it and we are moving. Hopefully it gets me to FL and then I will have it looked over down there. But I am just curious if any one else has had this issue. Jenny Link to comment Share on other sites More sharing options...
Cadillac Jim Posted March 11, 2014 Report Share Posted March 11, 2014 I take it you are talking about the VSS, the vehicle speed sensor, on top of the right half-axle. Sometimes improper routing of the output tube on the surge tank can dump coolant on the VSS and cause it go go out. A new one should have weatherproof connectors and a good O-ring but nothing is perfect in this world, so you should make sure that the surge tank dump hose is routed away from the VSS. -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
KHE Posted March 11, 2014 Report Share Posted March 11, 2014 There is a heat shield for the VSS. Is it present? Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
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