Toyota 2.5l p0016, p0300, p0301,…
Hello everyone, my name is Usman and I am a self taught mechanic in Dallas. Today I have an issue with a salvage vehicle that came with less than 50k miles that stalls intermittently.
Upon initial diagnosis youtu.be/6dllseanEEQ it concluded that the VVT actuators were in working order. Though not shown in video i ohmed the solenoids (9ohms) and they are in spec.
I decided to replace the tensioner and oil youtu.be/YxcJX5_LAvk
After a test drive that went well it stalled yet again upon return. I checked codes: p0016, p0300, p0301, p0302, p0303, p0304.
My initial capture actually matches a known good posted by one of DN members (see attachment).
Is this a common occurrence? Any TSB? REAL FIXES?
does this engine need a timing job at 47k?
You say this is a salvage vehicle which makes me ask: Is this a flooded vehicle? If not, was it a front end collision vehicle?
Yes I believe based upon the repairs that the front end was damaged. The oil pan is dented. And I do not believe that it was flooded. No signs of it anywhere
I'd be inspecting for pinched/cut wires in that case… also burned wires near anything that appears to have been welded.
That wouldn't be a bad idea james. In the case of damaged harness I would think the issue would be permanent and not sporadic. But you're right I did fix the turn signal light wiring on that very side because it was cut
I believe that you ohmed out the VVT solenoids and not the actuators as mentioned.
Try and get the scope to capture before the stall and during the stall. Get scanner readings of solenoid command! Your scope capture is maybe 5 degrees off. Im thinks that something is sticking like a exhaust cam phaser or solenoid. Won’t know until we can scope the problem! Half the battle is to produce the problem, the other half is understanding what happened!
Yeah that's the difficult part. So far it has only happened during a drive…
I'm not ruling anything out at this point but it sure as heck would be a wonder… engine has 47k on it
@47K I would expect that either but then, I'm reminded of your salvage comment. How sure are we this is the original engine (or original PCM/cluster). I'll admit that for a 2016, 47K doesn't seem out of line however.
The damage seems to have been in the right front. The frame wasn't affected. The engine bay is mint and so is the car overall. My guess is that the cam phasers are sticking
What's the oil condition? Could phasers be sticking for valve timing codes? Disconnect solenoids for phasers/actuators after clearing codes and take a drive and see if timing codes return with phasing of cams being prevented?
It has the notorious first start phaser rattle so that's my guess
Not sure but it never was an issue. Could be because of the stalling. I'll get the values when i get the car this weekend