Sensor Problems. - Diesel Truck Forum -
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post #1 of 1 (permalink) Old 12-05-2009, 11:34 PM Thread Starter
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Sensor Problems.

Hey fellas. A while back I was driving to work and my attitude monitor started reading low to no oil pressure at idle but was fine when i was moving also it was very sluggish like the apps was going out. So I ran the codes and every sensor had a low voltage code also there was a aux 5v code so I checked all connections, voltages, grounds, everything was fine. So then I unhooked the edge box and the truck ran fine hooked it back up, same problem. sent it to edge and $100 later they gave me an updated chip, hooked it ran fine for a day, then while I was filling up it started doing the same thing reading low oil pressure etc. (btw the gauge in the dash stayed at a normal reading the entire time) so i unhooked the chip again truck runs ok. Then i got access to an OBD II scanner and with that plugged in, i plugged the chip in and as soon as I started the truck up instantly threw an overboost code. The only things that looked weird was at idle the map sensor was reading 14.64 psia and at wot the apps only went to 2.98 volts I don't know the range of voltage for apps I'm just assuming 0.something to close to 5 volts. Does anyone know the ranges for these sensors? Am I on the right track?
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