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I second what Mendel mentioned above. I'd continue with the periodic EGR system cleanses and do an OCC. Spend your time and money on a scangauge...
Which versions of Techstream have the EGR valve step test?
Water flow (I used a garden hose) IMHO would better approximate the restriction of exhaust gas recirculation at typical engine operating speed....
Check out the gen 3 to gen 4 engine swap threads. Pixel XL ?
It's an exhaust heat shield. As long as you're not driving through tall dry grass, you'll be fine.
Add a dab of RTV silicone? Pixel XL ?
Oxiclean is cheap if you buy in bulk. Only need a tablespoon if you're filling only the cooler with hot solution - just plug one end. It's also...
I'm "liking" this post for your pictures. Pixel XL ?
Holy moly! Pixel XL ?
As I recall, Critic's EGR cooler was first cleaned at 180k miles. Unfortunately we can't weed out percentages of HG failures cause by EGR cooler...
Preemptive headgasket replacement? At least that way you won't have to machine the block... :D
Yes it does. Clogged external EGR raises engine temps. An internal EGR cannot clog. Pixel XL ?
The 2zr-fe engine (Corolla) has no external cooled EGR. It's internal. Pixel XL ?
When I'm doing a Prolong session I'll take the bus to work. Albeit it's only a 4 mile trip. Is Uber/wife available? Pixel XL using...
It's good for keeping the robin eggs out of the engine this time of year.
You're probably right. There's only one of those and it looks like you found it. Soot doesn't normally billow out of the transmission. You...
"The process of recirculating precise quantities of exhaust gases back into the combustion chamber has a number of advantages. In petrol engines,...
I'd purge air out of your system first then see if P0301 returns. Then worry about headgasket Pixel XL ?
Are you loosing coolant still? Maybe there's just air in your coolant system causing P0301? 95k miles is also about time to clean out your...
More planned obsolescence by Toyota? I wonder how many head gasket failures this causes? Excellent write-up Sergey Pixel XL using...
