So just recently I was driving and I lost all power and my truck virtually just died so I get a towed back I can barely get it to start and it'll barely hold 500 RPM for my code reader says it's po441 evap, all cylinders misfire so I replaced the purge solenoid, no help, is there a way to bypass the entire system so I can start my truck and have time to fix this problem later. so my truck is a 1997 ram 1500 4x4 automatic 5.2 V8

 

Evap isn't going to cause those symptoms. You have something else going on. Either low fuel pressure, failing crank sensor, or something else along those line. What do your plugs look like, and what do you have in there?

 

possible, I have a quality odbII. And besides the squib fault. Here is what comes up besides evap.

 

out of sync is that for cam/crank? could be clogged cat, plenum, fuel pump, o2 sensors, crank/ or cam sensor, the evap code is a generic code, as heyyou said that’s not going to cause this….with what you described id try taking out pre cat o2 sensor and see if she fires up


also can you view live data on that?

 

actually plugged cat was my first thoughts, but its not very old with new O2 sensors, I've replaced almost every sensor on this truck but the cam and crank sensors. I do have a new cam sensor so I'll pop that in, I'll pull the 02 and see if she fires. I'll check the plugs as well

 

On scan tool if you can monitor live data, select cam and crank sensors and rpms and view in wavelength form, they should match pretty much up, if there is inconsistency the the one out of 3 that’s doing it will be your culprit

hard to understand, I have a snap on modus scanner and that’s how I always figure out cam and crank sensor failures in my shop, takes legit 3 minutes to find out

 

Getting it to run long enough will be the trick 👌

 

you can still do it that’s why you monitor in wavelength as you crank

 

I didn't see what the fuel pressure is!

 

success, pulled 02 sensor, starts right up,