so i have been posting here about my speedometer not workin on my 94 cx until i drive it for like ten minutes...but today after skool i went into ma car..btw it was hotter than hell! and it worked...for some reason everytime the car is hot it works...perfectly because i drove by those "your speed" things on the side of the road and i was doing wat it saiid on ma cluster..so my question is..wat can it be..it works when my car is hot from driving or just stayin in the sun...help!! thank you!

 

Speed sensor? maybe its worn down and needs the heat to expand.

 

If your speedometer works when things are toasty warm then that means that something is EXPANDING and allowing either the mechanical portion of the VSS or the wiring of the cluster to make a connection that it cannot otherwise make.

It is simple almost everything expands when heat is applied. Heat is being applied to your entire car when it is hot outside. That means something is EXPANDING as the result of the heat. The real question is, WHAT could expand and contract with temperature and is connected to the speedometer?

Most speedometer/odometer issues are related to the VSS (Vehicle Speed Sensor) which attaches to the transmission and sends a signal back to the speedometer/odometer and ECU telling you what your speed is. Maybe???The VSS wiring is loose at a connection point and when the wires get hot enough they make the connection and send the speed signal. Maybe???The VSS where it connects to the transmission is loose and the mechanical gear/housing does turn and operate properly until the heat of the metal inside the VSS gear swells with the heat and engages the gear....


My bet is if you replaced your VSS with a new one your problem would be solved. VSS connectors are easy to install and only cost about $45-65 if you get them online.

The only other part of your car which would swell and shrink with heat would be the plastic where the wire harness connects to your gauge cluster. But it would have to SWELL a **** ton for the wiring to have connect/disconnect. Plus, you would see problems with other gauges on your dash if the wiring wasn't tight fitting all the time.

My best bet for you is that the VSS needs replacing.
Check this out for the replacement part for speedometer issues:
http://www2.partstrain.com/store/det.../RB911751.html

 

you think so? because it always works when the car is hot..or its been driven for a while..

 

ay thanks shailoche ima replace the vss and see if that was my problem

 

How about some proper Fu*kin english, and maybe a hint of grammar. Wow.

 

ok JTmartin, that wasnt necessary.. we are not teachin proper grammar here and this is not hooked on phonix. Really..

 

Easy killer! BTW, you do know that there is a G in FU**ING, right? Last time I checked that wasn't proper english either.