Hey guys on my 99 24V when ever my tank gets to 1/4 tank my truck goes into a lim mode, truck will still tell me I have X amount of miles until empty. Won’t leave 1st gear or exceed 20MPH. I think it’s something todo with the sending unit but really not sure any help is greatly appreciated 

Never heard of that in a second gen

Have you checked for codes when it happens? It does seem strange.

I haven’t gotten an engine code since I’ve owned the truck. It does it every time I hit 1/4 tank 

Are you sure you're not sucking air

I don’t think so, 34 gallon tank and only takes 24 to fill it up. 

I have to assume the problem goes away after you fill it up?

Yes fill it up and truck runs good again shifts fine and runs like it should 

Do u have a draw straw? Also is it running like crap or idles revs normal

Edited March 25, 20187 yr by Silverdodge

Yes but had this issue before the draw straw was installed 

Like I say does it run normal or like crap

Fires up fine, idles fine and drives up to 15-20 mph then won’t leave 1st gear

The only thing the transmission and fuel sender/gauge have in common is the PCM.   

I've seen one case where a transmission shop installed a voltage regulator for the transmission wrong. Instead of tapping the power wire they cut it to the PCM which caused all kinds of weird issues. I know modified transmission typically have either a resistor or a voltage regulator install for the governor pressure sensor.