Speed sensor ques.

If it is your truck you can bring it to the dealer and have them adjust the governor.
If it is a company truck I would not mess with it, since it is very easy for them to tell if it was changed when they hook it up, and I do not know of any company's that do not fire drivers on the spot for changing it.
Also it is illegal for any repair shop to change this without the owners permission.

 

It is quick and easy to go to a dealer or shop that has the software to hook up to your ecm and change your VSL (vehicle speed limit) but watch what rules are set for what you do tankers in ca are suppose to be set at 65 mph

 

It is possible to that you ground out that sensor, you might ground out other things as well, then your company will want to know what happened, especially if you fry the trucks computer that runs the engine and everything else, i think i would leave well enough alone.

 

You can't ground the sensor. When the ECM no longer receives a valid speed signal it will limit RPM to the point you will be going slower had you not tampered with it.

 

If you really want to change the speed limitor setting...just spend the money and buy a Bully Dog Big Rig downloader. With the downloader you will be able to change the speed limitor, cruise high and low settings, and also the two different tunes they give ya. The price tag is a bit steep for a company driver at $2800, but if you are so serious about risking your job for a couple extra MPH then $2800 is probably worth it. My thoughts are that 67 MPH is fast enough...a truck just needs to be able to pull a hill and not be a flat-lander speed demon.

 

Drive down hill!!!

 

google faster truck

 

Or become an owner/operator.

 

how can i change horse power on a kenworth t300 from 215 to 300
hp i have it governed to 74 mph.