255 install now car wont rev past 2k

[Enano]

Just did a walbro 255 install from driftmotion.

Car turns on idles fine but if i step on it it chokes up and just wont rev anymore it just doesnt rev. If i rev it slowly and slowly it will rev higher up to the 4k as long as i dont step on it.


WTF i didnt have this problem with my last supra

Edit: car ran fine last night with the stock pump no vac/boost leaks have a code 51 and 21 o2 and idle but still the car ran fine last night and pulled hard. Today i change the pump now it wint run.

57trim ct26
Stock injectors
Walbro 255
Stock afm
Stock piping
Egr delete
Canister delete
3 inch all the way back
J tube delete

 

[IndigoMKII]

Sounds like you either got a bad pump or you're doing the install wrong.

 

[Enano]

Could possibly a bad tps + an increase in fuel pressure cause the ecu to go into limp mode? I'm pretty sure I did the install correctly because the car is running... if I had done it wrong the pump wouldn't work and it wouldn't start I suppose? Plus theres not much I could've screwed up all I had to do was connect the clip provided to the two wires from the original pump...

Also something really weird... as I smash the pedal to the floor and the car gets to 2k rpm its like it just floats there and the motor makes no noise, but I notice my stock boost gauge goes from - negative to 0 meaning I'm making boost?

 

[7M4EVR]

Bad pump or u switched the two wires around. It stays idle because there is no demand for fuel when u press the throttle u lose your fuel pressure. Also 0 is not boost

 

[Enano]

If i switched those two wires around would the pump work at all? Cause when i turn the car off i can hear it running stilll

 

[IndigoMKII]

I'll just put this out there. If the car runs with the stock pump but doesn't run with the walbro, what do you think changes between those two situations?

 

[MkIII FTW]

My brother ran into the exact same issue. We did at lot of digging into other parts not considering the pump because it was new. Nearly 3 weeks and $400 bucks in un-needed parts it turned out that our first guess was right and it was the fuel pump. We changed it and the car has ran fine ever since.

 

[Enano]

Turns out I had the line that connects to the fuel filter kinked extremely bad... gotta source a new one from a junkyard or something tomorrow

 

[MkIII FTW]

I think you can get one from a toyota dealership pretty cheap. That'd be a lot less headache than a junkyard find IMHO.... Anyways hope it fixes your problem.