2010 EGR notes at148K

I have 360,000 mi just turned over this week on a 2010 solar roof JBL I don't know what trim level of Prius five door perforated leather seating surfaces so on and so forth even at 360,000 mi with never an EGR clean the pipe that you're talking about is about like yours at $148,000 I have not pulled off the intake manifold to take a look at the real business that needs to be looked at The car just hiccupt about 3 days ago and got some codes for a misfire that immediately went away and didn't set off any lights. I only saw them because I connected tech and looked. So now the owner of the car is grasping at straws talking about the wrong spark plugs and all this and that and I'm telling the lady look spark plugs at this point don't play a major role We can take a look at them just because but they've been fine up until this point. We are actually way overdue for this nonsense and have only staved this off by keeping the car in the wind for its whole life and now you have 360K and the head gasket issue in the death rattle is rearing its ugly head Man you better put one up on the chalkboard and leave that alone and we shall leave that alone now It's done it's a duty as well paid for and we're done back to a generation too until it's time for whatever's next.

 

That pipe is good to check because it’s easy to remove. The EGR cooler and valve tend to be more clogged, will be worth cleaning, ditto for the EGR passages in the intake manifold.

 

There's a chance that the manifold is the thing to check first if your time is limited, because those four passages can clog differently and the car has no way to notice that, and the result can be some cylinders suffering the effects of too little EGR and others the effects of too much, and the engine controls doing nothing about it.

Every other part of the EGR system, as it clogs, will affect the overall flow, which the ECM can monitor, and react to, and tell you about.