Code 54, Does this put computer in lymph mode? Options

[injection]

Question for all you gurus out there...if the st205 throws. Code 54, which I believe is faulty IC pump, or coolant level sensor, or both...will this cause ECU to go into lymph mode/protection mode, meaning will it cut your boost in half to about 6-7psi,

[Geddes]

No the fluid should go down regardless of temperature. Clear the code, start the car and try it immediately.. if it doesnt work at that time.. its not working ever.

My toyota dealer couldnt get me a pump.. and the price from the importers around here was about 800$ canadian.. which is.. absoulutely insane.. However where you are, you may have better luck at your dealer

I would pull it apart following those instructions I posted before you get a new one though.. like I said.. I was able to fix mine for 2$.. haha

The thing about a custom set up on this is that if you look at a wiring diagram for the intercooler set up.. there is a 5 wire connector going to that pump (although only 2 wires actually make it to the pump itself). If that whole rig isnt working properly it will still throw code 54.. unless you have an aftermarket ecu that can disable that.

The other option I was going to try if I wasnt able to fix my pump was to repalce the pump itself by soldering in a new one in place of the old one while leaving the other resistance wires in place.. I don't know if this will work while keeping the light off or not, if anyone else has any experience as far as that goes, feel free to chime in . A buddy of mine had a spare bosche one kicking around from his set up so I had one readily available for me to try out at no cost if it didn't work out.. but as I said.. I never ended up having to..



All of this is assuming the pump itself is bad of course (which it likely is as the seal on the impeller shaft tends to allow coolant by so if it has sat at some point in its life it corrodes the inside of the pump. Mine was so full of rust I could barely get it apart.. ), so also be sure to check your wiring out.. make sure you've got power and ground for the pump too!