Any ideas why my tach won't work after starting truck. Once I drive it and get over about probably 2000 RPM it starts working?

 

My '06 Dodge did some screwy stuff - tach read 0 at idle and read like 4500 at 70 mph in 6th gear. Did it for a couple of weeks and then when back to good (didn't feel like chasing wires) I figure it was a loose connection

 

could be something with the computer, or gunk on the sensor

 

So the tach runs off a sensor, and not the alternator?

 

its probably the cps, its behind the starter about $50 from autozone

 

that tach dont run of the cam position sencer though i thought

 

it fixed mine?? when the tach was sporadic...check for codes it will probably have something for the cps

 

wow i wasnt saying you were wrong just at a loss for words

 

Hey thanks. It has 116000 miles on it. Truck has been in storage since February 05' and I started it for first time since in October 08'. It has several issues now. 1. Tach, 2. Fuel Gauge doesn't work, 3. Troublecode for an over efficient turbo.