My speedometer is pegged to 120, it happened right after I cranked it last night. Anyone know what would cause this or where I should look first to fix this problem?

thanks,
david

 

Not exactly sure of the problem. Had similar issue with oil pressure gauge. After first oil change, it appears to have gone away. Is it pegged at 120 with the key off? Did you try disconnecting the battery for a few minutes and reconnecting it.

 

That happens to me every time I disconnect the battery, pull the engine, or drop the trans, just ingore it for a bit, it will fix its self. Although one time I had to run the truck up to 120 to get it to sart working again...

 

I guess when I crawl under the truck today ill check to see if it might be one of the connecting wires on the side of the trans. But yeah it stays pegged with the truck off.

 

I think your truck is telling you that it wants to go 120

 

Have you drove it yet? does it just stay peged with the key off? or is it peged all the time?

 

You were right about it just needing the battery disconnected. It works fine now. Im getting my exhaust welded up as I type this but I did throw three codes last night.

PO151 HO2S CIRCUIT LOW VOLTAGE BANK 2 SENSOR 1
P1153 HO2S INSUFFICIENT SWITCHING BANK 2 SENSOR 1
PO507 IDLE SPEED HIGH

I think I might know what the problem is with the first two, but im kinda stuck on the last one. I figure it might be tune related, so im gonna clear the codes after I get the truck back and see which ones pop up. Then ill probably get it fine tuned.

 

How is the power over the 4.3

 

I heard it too. You better take it up to 120, and did you hear that it says it wants to be blown to