Cataclean and EGR Clog Codes

This makes no sense to me since the engine stalls when I input 30 steps in the egr step control test. Swapping in the oem egr with the mashed ski jump should provide a different reading. If it’s the same reading I’d think that points to the intake or something else like a clog I can’t see. If it’s slightly higher then definitely it’s a fake eBay egr valve and I’m out $110 + $270(new oem egr) + all the gaskets and map sensor.

 

this is with the old egr valve. Both of them stall the engine. The new aftermarket egr valve doesn't as much as the oem one. In the previous video I was inside the car so it wasn't as pronounced.

I'm going to drive using the old egr valve and post the results later.

 

P0401 cleared with the old EGR. the egr valve still needs to be replaced since the ski jump is holding on by a thread but at least I know that's the last remaining problem. I believe The exhaust manifold leak was contributing to the code as well. Thank you again to @ChapmanF.

The coolant temp rose to 192 f when I was going 80 mph. I don't remember what the overheating temp is.

Conclusions:
1. Cataclean is lipstick on a pig. It'll help you pass emissions or smog but p0420 will come back.

2. P0401 is more annoying to figure out than p0420. It’s cheaper to replace all the gaskets in the system yourself than to smoke machine test it but it’s time consuming. Also not that much cheaper.

3. Always get the universal cat replacement if your state allows it because it's cheaper to get your buddy that's an ironworker to weld than a mechanic. You’re going to have to weld either way Whether you get the magnaflow direct fit cat or the universal cat. You WILL have to weld no matter what the aftermarket manufacturer says.

 

I got a new oem egr valve coming in tomorrow. I’ll find out if I need to extend the wiring because it’s larger. Will post readings when it’s installed.

 

I’m too afraid to open the new EGR valve.

 

I think @ChapmanF expressed that he wanted to see the inside of the new ones.

I installed it already. Was getting misfires with the old one.

 

That Wasn’t my intent. No.

 

21 mpg before the new egr to 55 mpg after. New firmware was already flashed to ecu.

 

I think It was from 70,000 miles ago which was when I had the original gen 3 engine. I was still only getting around 20 mph at the time. Wish I had looked into Priuschat then.

I’m noticing this gen 4 engine is low on oil so it’s either burning or leaking. The oil pan was never changed. didn’t think the gen 4 engine needed an oil catch can too but with a gen 3 intake it looks like it does.

 

I kept the old cat. I see how there’s an upper and lower cat per se on either side of the sensor. The upper cat was burned out and dislodged. The lower part was still white and “clean..” If I were to weld a new cat at the upstream from the sensor what is the probability that the cat would still be bad?

 

@ChapmanF do these test results mean my catalytic converter is on the verge of throwing a code or that my intake manifold and egr are begging for a cleaning? Both?