Clean EGR circuit (EGR pipe, valve, cooler) Due to short timing, I decided to replace with new EGR valve and cooler Clean air intake manifold Clean throttle body Replace PCV valve Clean MAP and MAF sensor Install Oil Catch Can Change spark plugs New Parts Cost: (pruchased online though McGeorge Toyota) EGR Valve (#25620-37120): 219.14 (msrp:332.89)
Maybe my deposition rate in the EGR system was less than some experienced, as I haven't experienced the cold-start rattle, and never set an EGR or other code in 177,000 miles. But my EGR system was a mess (including the intake manifold gallery). Seafoam isn't going to be a silver bullet, even if you spray it into the manifold monthly.
No EGR cleaning performed yet - will continue to collect more EGR test results through this winter and clean intake manifold, EGR tube and valve in this spring (around 50K miles). Will monitor the EGR monitor data and clean entire EGR/IM system (including cooler) around 80K miles.
Agree, it's late. Our EGR cooler at 120K was very dirty and about 75-80% clogged with rock hard carbon and oily gunk. I swapped in a pre-cleabed spare EGR cooler and EGR valve valve, and the latest version of the intake manifold.
After looking at about 10-15 different threads about deleting the EGR and finally figuring everything out, I decided to put together this "EGR Delete" How To so the next guy doesn't have to do as much research. All this is good for is cleaning up your engine compartment and getting the...
For the EGR cooler I'd suggest a caustic cleaner. Being stainless steel, and having such a convoluted interior, caustics are the go-to. Oxi-Clean Versatile Stain Remover is effective, and safe for skin. Not sure if it'd be available in UK though. Something that will be very effective, but needs caution, is a lye solution.
2010 Prius still shakes after head gasket job and EGR + intake cleaning Discussion in ' Gen 3 Prius Care, Maintenance & Troubleshooting ' started by infinitepub, May 7, 2025.
