2004 - 395,000 I received the P3190 code when my engine started sputtering. Is it possible to replace just the fuel pump? I have read that the pump and tank are one unit. If this is the case, can I replace the current tank with another year Prius tank that has a separate fuel pump? If so, which year will fit?
Curious why you're jumping straight to a fuel tank replacement? The Gen 2 fuel pump/tank is all one unit and is not separable. It would probably take a briefcase of cash and work to make something else fit, much less work properly. Tank should be a dime a dozen at a salvage yard or someone parting out a gen 2 on craigslist. Heck, even I have an extra in the shop..
If the pump is really bad and the bladder and everything seem to be working you could probably put an external fuel pump in front of the tank pushing the fuel forward pulling through the old dead pump and feeding the engine that way I've done it on some other Toyotas it is possible to do then again tanks are a dime a dozen .
Thank you. This is the code that popped up in Techstream gave me. The fuel pump seems like a good starting point. Is there something else I should consider or be looking for? Whatever it is, it is not a consistent problem, but could lave me stranded. Our local salvage yards puncture the tanks. Otherwise it would be an easy exchange.
P3190 is an extremely general code; it tells you the engine produced, for some reason, less than a fifth of the torque the car's computer was expecting it to. Considering all the possible reasons for an engine to run poorly and with piddly torque, there needs to be an effort to find out what the reason is for this engine, before starting to throw parts at it.
They don't puncture them here in the southeast United States I have several sitting and can get several anytime I want right at LKQ like chap says the 3190s are pretty general code there may be a fuel pump relay and other things involved but could be crapping out I've never seen it on this model like that but then again I haven't worked on thousands of them for 20 years either. Isn't the 3190 engine performance? If so you have a lot of things to be looking at not just the fuel pump or fuel pressure that's for sure.
The fuel pump relay is a great suggestion. Thank you. I did also get a POAOF 205 and thought it might be tied to the pump.
P0A0F is even more general than the P3190. P3190 at least is set by the computer that runs the engine, and means (quoting directly the repair manual): or, in other words, the engine is producing less than a fifth of the torque being expected of it. Given all the reasons an engine can run poorly and with piddly torque, it's no surprise that the list of trouble areas in the repair manual for P3190 is very broad: There are seven pages of troubleshooting instructions for P3190; they pretty much boil down to checking all the things any mechanic would have to check for an engine running poorly with piddly torque (but the steps are useful for the details about how certain things can be checked). The P0A0F is just a code from a different computer, the HV control ECU, which is more the orchestra conductor for the car. P0A0F just means "hey, I cued the ECM to give me some amount of engine power, and it didn't happen. Go ask the ECM about that."
Following up. Replaced the fuel pump relay. Replacing this brought up the code for what I think is the main problem, Misfire Cylinder 1. Ignition coils and plugs have been ordered. I also plan to clean the MAF while I have it all apart. Thank you for your input and suggestions.
Every Prius that I have purchased Gen 2 and 3 when I go to change the plugs they're almost in hand tight and that's it quite weird never noticed this in Corollas and all the myriad of other Toyotas I've had since the early '70s.
