Speedo

[Mikey4x4]

I put 33" 1250 tires on and now my speedometer is about 7 mph slower than my gps is there away to reset it or do I just deal with it?

 

[TeddESP]

Speedometer gear or get it flashed..? The extent of my knowledge..

 

[Mikey4x4]

I don't think I have a gear I guess I should have told you guys what I'm driving it's an 04 TJ

 

[Mikey4x4]

What does (flashed) mean I guess I'm lost here oh and it's an 03

 

[Joshua76]

It's resetting the PCM.

 

[Mikey4x4]

Thanks I'll have it done tomorrow that's easy

 

[JPNinPA]

Jeep Parts, Jeep Accessories & Jeep Soft Tops From The Jeep Parts Experts - Quadratec

Tj's need the gear replaced. Rubicons could have the PCM reset for tire size.
How to:
http://www.stu-offroad.com/engine/speedo/speed1.htm

 

[SteelHeadz]

If you take it to a dealer, ask them to set the pinion factor and see if the tire size is in the menu to be chosen. This will correct the accuracy of the speedometer. I'm almost positive that the 33s are in the menu.

 

[Mikey4x4]

Yeah I have a buddy at dodge I was going to have him take it to work today I just enjoy doing stuff myself