speedometer problems
 

just recently my speedo was spiking and then it stopped working...

my trip meter and mileage had also stopped working also....

what could be problem???

Re: speedometer problems
 

yes i was kind of leaning toward that....

i heard it was behind the tranny where the drive shaft connects..

but what does it look like????

It threads in AND has a locknut, and a plug with the wires, you can change it out in 15 minutes.

Just ask the parts guy how many turns to back it out after it bottoms out, I can't remember, BUT I think its one turn.

Last time I changed mine it was around $30.

quote="Maniac"]It threads in AND has a locknut,

it has a jam nut, as i stated above.

locknuts have distorted threads or nylon rings that stop a fastener from backing off completely after becoming loose

and a plug with the wires, you can change it out in 15 minutes.

Just ask the parts guy how many turns to back it out after it bottoms out, I can't remember, BUT I think its one turn.

Last time I changed mine it was around $30.[/quote]

bottom it out, then back off a 1/2 turn

cool thanks guys, i just found where the sensor is...

will be digging it out tomorrow....

yeah peterbilt quoted me $43 for the sensor...

are there usually 2 (or more) speed sensors?
is this speed sensor the same as the one used for other sub systems?

quote="possum squat"]are there usually 2 (or more) speed sensors?

no... ...depending

is this speed sensor the same as the one used for other sub systems?[/quote]

it's a magnetic pulse generator..., if that's what you mean.

abs sensors as well as some engine speed sensors are the same type of sensor

well finally pulled it out...

the tip had some fresh oil on it...

i only drove it for like a half mile than i parked....

speedo works...

couldn't really go far because of the weather....

hope that oil on tip isn't an issue?????