Boost Sensor

[sirjb]

I have an r34 gtt running nistune, Hypergear ATR 42, Bosch 040, Bosch ev14 injectors, front mount and 3" exhaust turbo back. It has been making 277 kw atw pretty happily and it has started running like a pig. Really rich, and when on full boost in 3rd gear, the engine light comes on. I plugged it into a scan tool and it came up as boost sensor. I tried to get one new but can't seem to find one, I got a second hand one from northside auto wreckers which arrived broken and still haven't received a working one back. Would a broken sensor cause the car to loose power, run like a pig and run really rich?

[Trozzle]

Check all the intake piping between the turbo and plenum for a leak.

[darkhalf]

Boost sensor fault can come on over 15 psi. Shouldnt cause richness probs though so I thonk its unrelated. If no fault raised upto 12 psi then sensor prob okay

[sirjb]

Yeah checked for leaks already none found. The engine light is coming on at 18 psi due to the boost sensor. So getting a new boost sensor won't fix this?

[tridentt150v]

check your AFM hasn't been unplugged.

[darkhalf]

Mine did it on the dyno also during tuning. We would keep clearing the code but it comes back once you hit so much boost. Didnt affect AFRs during the tuning. Disconnecting the sensor caused an early fuel cut so needs to be connected

[sirjb]

It wasn't doing it at first. Then it just started happening when the car started using heaps of fuel and running shit.

[sirjb]

So that is why I am thinking it may have something to do with the problem. Afm is plugged in btw. It's not running that bad just rich and rough on boost.