Engine Diagnostic Challenge in a 2013

How long does it take for the pack to drain? Are you seeing correct SOC before and after grid charging?

I'd focus on the pack first and find out why it's discharging and trying to get her engine started is not showing any clues yet. .

 

Yeah, the P3190 is the only current code, and sadly, all it tells you is the engine's producing less than a fifth of the expected output.

It doesn't say anything more about why, so it requires putting on the old-school gasoline engine diagnostic hat, and running down all the fuel / compression / spark Usual Suspects.

 

Quit pressing the exhaust pedal

 

Is that like a coal-roller mod?

 

Maybe. I am sure it has a discount code.

 

There are codes for the cam timing being wrong, if it's wrong enough for the ECM to notice.

I don't know of any codes specific to damaged valves ... they'd fall under the 'compression' Usual Suspects.

 

Yep, oh yeah..it wouldn't turn over very much or at all and the valves would be bent. P0016 etc..would probably show up with a bunch of others.

 

navigating techstream for the first few times ain't gonna be a walk in the park. Remember the first time in the repair manual? Stick with what ya know best of what stats are supposed to look like form experience while searching out how techstream is organized, than move on to uncharted territories in the software.

 

Maybe not often, but never say never.

(I just found those by trying to search up the thread I remembered where that happened ... not sure, maybe that was this one.)

Timing lights were more for ignition timing. There are still marks down there and you can check those, but the ECM is in direct control of the ignition timing, so you pretty much never have to.

The ECM only has indirect control of the valve timing: the timing chain has to be on right, and then the ECM has a small range of control using the oil-control valve. So if the chain has jumped, the ECM can't make the timing be right, but can give you a code about it.

You confirm the chain's on right by taking the valve cover off and looking at the marks on the cam sprockets. Details are in lots of threads. Most of those stories involve someone recently doing work where they had the chain off, and it jumped as they were reassembling, before the chain tensioner could do its thing. I haven't seen a lot of stories where this (not belt) chain just skips a tooth out of the blue.

 

Just keep in mind the ECU miscom code was history, so that shouldn't be figured in yet. Unless it comes up as pending..or current..then address it. Let us know!

 

Old cars with carburetors had an accelerator pump joined right to the throttle linkage: any time you pressed the pedal, an extra squirt of fuel went in, so that the sudden inrush of air through the wider throttle opening wouldn't mean a moment of lean mixture just when you wanted go.

You could do other stuff with that too. 'Pumping' the pedal a few times when starting would shoot some extra raw fuel into the manifold, which might help with a cold start. Overdoing that, on the other hand, could 'flood' the engine.

None of that stuff exists on a Prius. Pumping the gas pedal doesn't shoot extra gas in. Heck, it doesn't even open the throttle; only the ECM does that, looking at what you're doing with the pedal for an idea of what you'd like the car to do.

It kinda sounds like whoever the 'he' is has mostly experience from pre-Prius days. (Which isn't a horrible thing, since a P3190 is basically a call for someone with old-school gas engine diagnostic chops. Still, the difference between a carburetor and throttle-by-wire with EFI matters.)