[Ice_Man_67]

After reading every post on this site about the electric wastegate and p0243 problems I finally got my check engine light to turn off and the truck seems to have allot more power.

Don't ask me why but after checking every wire, running my own new wires and using a new wastegate I was not getting any success. I put a 2Mohm resistor in parallel with the wastegate and it seems to work now...

So to the boost question, I have attached a snapshot of a drive in the truck

MAP sensor starts at 13psi (atmoshere pressure correct) and maxed at 37psi.

37-13 = 24psi does this mean if I had a boost gauge it would have read 24 psi and therefore my truck is not achieving full boost?

 

[DODGE74]

I'm not sure why your using a resistor.

Why didnt you just shut code p0243 off in your DTC's tab? Heck of a lot easier than getting your fingers dirty and it doesnt cost you a penny.

Depends, if your elevation is above sea level then yes you would subtract absolute pressure from the total to come up with boost. Where I'm at I would subtract 14.7 psi from the absolute. But I make way more boost than what the sensor can even read so it does me no good.

 

[Ice_Man_67]

I am trying to get my truck back up to par (stock power) as I just got it a month ago. I don't have a programmer or anything like that so I can't turn off the dtc code only clear/reset them. The screen shot was from OBDwiz software.

As for the resistor this has been the only way so far to clear the code and keep it off...

 

[lpennock]

MAP sensor starts at 13psi (atmoshere pressure correct) and maxed at 37psi.

37-13 = 24psi does this mean if I had a boost gauge it would have read 24 psi and therefore my truck is not achieving full boost?

mostly correct. Map sensor starts at ambient presure which is 14.7 at sea level and 70degees F. Depending on your altitude the number and be lower or higher. If you also read the baro sensor or just looked at the before start pressure you would have the low number. But 24 is about correct with what you did.

When you have a failed wastegate solenoid it keeps the computer from being able to block pressure from reaching the wastegate. This puts you fully on the mechanical wastegate which is set about 24psi. If you get a new solenoid and get rid of the resistor you should be able to get about 46psi.

 

[DODGE74]

I am trying to get my truck back up to par (stock power) as I just got it a month ago. I don't have a programmer or anything like that so I can't turn off the dtc code only clear/reset them. The screen shot was from OBDwiz software.

As for the resistor this has been the only way so far to clear the code and keep it off...

Ahhh

Sorry about that, the screen shot that you posted kinda looked like a shot from a EFILive table and that's why I suggested turning off the code from inside the software.

 

[Ice_Man_67]

When you have a failed wastegate solenoid it keeps the computer from being able to block pressure from reaching the wastegate. This puts you fully on the mechanical wastegate which is set about 24psi. If you get a new solenoid and get rid of the resistor you should be able to get about 46psi.

Ok, that make sense. I had the solenoid still hooked up in the circuit and it seemed to still be working as I could hear it click when I unplugged it and plugged it back in a couple of times but I guess the numbers don't lie.