Engine/Transmission (1998.5 - 2002) Codes 0522 and 0523

[s2Mumford]

I am having intermittent dead pedal issues.



Usually, first start of the day, fires right up and runs fine until the boost goes to about 5 pounds and then I go into dead pedal mode.



Also, on a long uphill on the way home from work, the boost is hovering at a consistent 6-8 psi, and that also seems to activate the dead pedal.



All I have to do to get the truck to run right is turn off the ignition and restart it, 95% of the time it'll run right from there on. Otherwise, a second restart will fix it.



Today, I decided to check out a few things. I took out the IAT and cleaned it (it wasn't very dirty).



I am now on my way to buy a deep socket to yank the MAP sensor and clean it / replace it. I am pretty sure this is the root of my problem.



Today, I pulled the codes and am getting 1693 and 0216, I've got these codes for the last 10k miles or so, but I got the 0522 and 0523, which means too high/low voltage from the oil pressure sending unit.



Is it possible that a bad oil pressure sender could be the source of my dead pedal issues?

Anyone else familiar with this problem?



Thanks

Stu Mumford

 

[R-N-R]

"0216" is usually the dreaded "VP44 (injection pump) is going to die" code.



Got Gauges?

 

[s2Mumford]

Yes, I have gauges, thanks. Do you have anything helpful to offer?



That is how I figured out the correlation between my boost guage and the "dead pedal".



I'm more interested in the oil pressure fault / MAP aspect of my inquiry.



Thanks

Stu Mumford

 

[01smokinram]

Those codes you have lead to oil pressure sensor being bad. It'll do that if you don't have oil pressure or too much. here's a link to where you can find those codes. www.troublecodes.net



See ya

Ray

 

[jmblitz]

Codes....

An actual low oil pressure situation can cause the ECM to go into power derate which would have an effect on performance, however this is typically associated with DTC P0524. There's a convient spot on top of the oil filter housing where a master gauge can be connected to determine if the oil pressure is actually up to specs. On a fully warmed engine it should be a minimum of 10 psi at curb idle, and a minimum of 30 psi at 2500 rpm. If the OP readings are good it's either a sensor, connection, or computer, that's all thats left. I'm also getting that illusive P0216.



Good luck,

Jerry