Gauges - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Bspikes · 09-25-2011, 09:39 PM

ok, so here goes. The speedo in my car does not work, well it works randomly but incorectly. Most of the time it is pegged all the way over. But ocasionally it will start to read backwards. This usually happens when Im on the freeway. It will move backwards, counting down speed instead of increasing speed. The faster I drive the farther it goes around. I have checked the harness behind the dash for cuts or damaged wires and have found none. I have checked the connection at the VSS, looks good. The other gauges work, temp and fuel. The tach doesnt work but thats because the DA before me cut the harness to install an after market coil. Any help with this would be greatly appreciated.

SkewieSX · 09-26-2011, 09:05 PM

wonder if its needs a better ground?

Kom3t · 09-27-2011, 01:48 AM

Would a broken speed sensor do this? Cause my speedo jumps around too... It moves As I rev, the previous owner did a auto-manual swap, I don't know how to fix mines either

09-25-2011, 09:39 PM	#1
Bspikes Join Date: Jul 2011 Location: Texas Age: 44 Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	Gauges ok, so here goes. The speedo in my car does not work, well it works randomly but incorectly. Most of the time it is pegged all the way over. But ocasionally it will start to read backwards. This usually happens when Im on the freeway. It will move backwards, counting down speed instead of increasing speed. The faster I drive the farther it goes around. I have checked the harness behind the dash for cuts or damaged wires and have found none. I have checked the connection at the VSS, looks good. The other gauges work, temp and fuel. The tach doesnt work but thats because the DA before me cut the harness to install an after market coil. Any help with this would be greatly appreciated.

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09-26-2011, 09:05 PM	#2
SkewieSX Leaky Injector Join Date: Apr 2011 Location: Rancho Cucamonga Age: 37 Posts: 101 Trader Rating: (0) Feedback Score: 0 reviews	wonder if its needs a better ground?

09-27-2011, 01:48 AM	#3
Kom3t Leaky Injector Join Date: Oct 2008 Location: Saint Paul, MN Posts: 119 Trader Rating: (2) Feedback Score: 2 reviews	Would a broken speed sensor do this? Cause my speedo jumps around too... It moves As I rev, the previous owner did a auto-manual swap, I don't know how to fix mines either