CCJC Posted October 15, 2007 Share Posted October 15, 2007 As original owner of a 93 300 SC with 52000 miles this vehicle has been absolutely trouble free until about a month ago when the speedometer began to operate intermittently. While operation was normal at most times, on occasion the speedometer remained at zero. Now (during the last few days) the speedo is not moving off the zero peg at all. Having reviewed the few threads describing similar but not the same problem I'm searching for the probable sources of the failure for my own peace of mind but also for guidance as to whether this could be handled by my local and reliable mechanic or requires Lexus service? Quote Link to comment Share on other sites More sharing options...
Whatmaycome14 Posted October 17, 2007 Share Posted October 17, 2007 I too have the same issue with the speedo, I look forward to finding a solution. Quote Link to comment Share on other sites More sharing options...
CCJC Posted October 17, 2007 Author Share Posted October 17, 2007 As additonal information to the SC300 speedo problem above, if pertinent: the oddometer operates normally. Thanks for any trouble shooting input. Quote Link to comment Share on other sites More sharing options...
smooth1 Posted October 19, 2007 Share Posted October 19, 2007 You probably have a speed sensor issue on the transmission. If you can have an ODB2 scanner give you a code, we can determine the answer. Quote Link to comment Share on other sites More sharing options...
smooth1 Posted October 19, 2007 Share Posted October 19, 2007 Wait, sorry, I just noticed the year of your car. It's pre- ODB2. You will have to take it in. Your local mechanic should be able to handle it. The sensor costs around 70 bucks. It's not to hard to replace. Quote Link to comment Share on other sites More sharing options...
CCJC Posted October 19, 2007 Author Share Posted October 19, 2007 Wait, sorry, I just noticed the year of your car. It's pre- ODB2. You will have to take it in. Your local mechanic should be able to handle it. The sensor costs around 70 bucks. It's not to hard to replace. Quote Link to comment Share on other sites More sharing options...
CCJC Posted October 19, 2007 Author Share Posted October 19, 2007 Wait, sorry, I just noticed the year of your car. It's pre- ODB2. You will have to take it in. Your local mechanic should be able to handle it. The sensor costs around 70 bucks. It's not to hard to replace. Thanks for the info! Quote Link to comment Share on other sites More sharing options...
CCJC Posted October 23, 2007 Author Share Posted October 23, 2007 Progress comment: replaced transmission speed sensor, no help. Now trouble shooting cruise control and speedmeter cluster. Quote Link to comment Share on other sites More sharing options...
smooth1 Posted October 23, 2007 Share Posted October 23, 2007 HHmm, not the speed sensor,,,,huh. well, that only leaves the cable and the speedometer gauge itself then. Which is unusual that they would have an issue. Quote Link to comment Share on other sites More sharing options...
CCJC Posted October 23, 2007 Author Share Posted October 23, 2007 Problem now resolved. Solution: Problem was a loose connection on the backside of the speedometer. Quote Link to comment Share on other sites More sharing options...
smooth1 Posted October 23, 2007 Share Posted October 23, 2007 good . And thanks for the resolution follow up. Quote Link to comment Share on other sites More sharing options...
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