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Vehicle Speed Sensor Symptoms

Old 04-19-2014, 03:20 PM
Thread Starter
Join Date: Mar 2014
Location: Monmouth, Maine
Posts: 7
Default Vehicle Speed Sensor Symptoms

Hello. I know I need to replace the VSS, because my speedometer doesn't work half the time, sometimes it shoots up to 100 MPH while in park (idling) and the D4 light will start blinking. This is an off and on problem, but when the speedometer starts acting up and the D4 light starts blinking, the transmission shifts weird. It will down shift and slip and do all kinds of weird things. The car acts like it is running out of gas. It has loss of power and everything. Only while the speedometer stops working, and the D4 light starts blinking. Is it possible that the VSS failure can cause these other symptoms too? What do you guys think? Thanks!
Old 04-19-2014, 03:22 PM
Thread Starter
Join Date: Mar 2014
Location: Monmouth, Maine
Posts: 7

Also, I did a quick search on the web, and I found this out:
"One of the most noticeable symptoms of a faulty speed sensor is the odometer or speedometer of the vehicle not working. In some cases, if the speed sensor is damaged, cruise control will also not work. Symptoms may also present themselves within the transmission, and the vehicle may be rough or hesitate when trying to shift gears. The transmission may also jump gears. Some other symptoms can include the vehicle rumbling or not idling correctly. It may also burn more fuel than usual, and it may suddenly lose power."

- Source: Symptoms of a Faulty Speed Sensor and Replacement Instructions -

I am having ALL those symptoms. So I am going to go ahead and change the VSS, and see how the car runs after that.
Old 04-20-2014, 07:33 AM
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Join Date: Feb 2010
Posts: 27

Its an easy fix and probably your issue. Just do the swap over something that you can find that little pin when you drop it. Its just two screws but I dropped the little coupler pin. I bought a cheapo off ebay and it worked for a year and was still going when I sold the car. Next one I replaced I left the coupler in it and just swapped the head. I compared the old and new, the pin stays in the unit and they were the same size. Dont drop the screws and you will be out fast.

Probably just the vss but dont panic yet if it doesnt fix it. Pull the codes from the tcu.Do give the repair a priority because it is not good for the transmission to be run with faulty controls. Ask me how much a transmission rebuild costs on a 90 accord. I know Good luck!

Last edited by homey; 04-20-2014 at 08:05 AM.
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