dwight16

I have a 93 LS that the tach and speedometer were both working intermittently. They would usually not work out of the driveway and would independently start to work whenever the spirit moved them. These gauges share a common ground point and I was convinced that there was a problem with the ground. About a month ago I removed the instrument cluster and very carefully checked everything over for good, clean connections. Snugged all the screws down snug (not overtightening) and then put the cluster back in. Everything worked for about a week then the same problem again. Removed the cluster again and this time fabricated a wire harness to bypass the traces on the flexcircuit board and then carefully resoldered connections on the circuit board ground plane traces. This time the gauges have been working good for about 3 weeks. The tach is actually a very simple circuit in the instrument cluster. You have a signal that comes in from the ignition coil that is routed through a single resistor on the bigger circuit board, power and a ground lead that connect to the meter. I wouldn't mess with these circuit boards unless you are experienced in electronic repair and have the proper equipment. Being ham fisted with a soldering iron on these circuit boards can be disastrous. Good luck,

Curt

Curt,

It sounds like you possibly fixed the intermittent tach/speedometer problem. At last report, yours had been working for three straight weeks. Is it still working? Can you give more details on the repair? If possible, please email me directly at: djj6@gte.net.

Thank you!

Dwight

I am having the same problem with the speedometer and tachometer in my LS400. The tach works about 60 percent of the time, while the speedometer works about 10 percent of the time. Does anyone have a solution to this problem?

I just got a brand new magazine from a Lexus Dealer Online. I have verified that the disc are in the correct position. Any other ideas? Anyone? Thanks for your help!!!

I have a 1993 LS400. I'm having problems with the 6-disc Pioneer CD changer. When ever I turn on the CD player, I get an "Err" message. I then push the "Disc" button to change discs and get the same "Err" message. Typically, I go through this process 15-20 times and then finally a disc will start playing and the changer works fine from there on until the car is turned off. Does anyone know how I can fix this problem to have the CD play immediately upon start-up without any "Err" messages?

Thank you,

Dwight