S2 Stagea Rs4 S Factory Gauge Issues

[beaugus]

Hey everyone, its been ages since I've been a part of the forums but I've recently bought my other half a Series 2 Stagea RS4 S manual. It's a great car defiantly what we were looking for after owning an R33 but now with family future in mind we needed something else without making much sacrifice.

The main issue which I'm having is with the factory fitted gauges, the only gauge that functions correctly is the voltage meter, the front torque meter is unresponsive and boost gauge only sits at 0 even under boost. The Turbo is defiantly boosting correctly there is no hesitation or leaking just no response from the gauge.

If anyone could point me in the right direction with where I should start looking it would be greatly appreciated, the needles on the gauges do operate as they do fall when the engine is off and will move when the ignition is on. The car is completely stock.

Thanks in advanced.

[airbox]

have you checked that the boost sender unit is connected to the intake plenum? With the ignition on the guage will read atmospheric pressure and go to 0 mmhg, if it isn't plumbed into the intake plenum with a pressure/vacuum hose then it will not see anything. If it has fallen off then you will also need to check that the intake plenum is not open to atmosphere. I should think the motor would run pretty rough if this is the case so I would think that the sender unit must be faulty

[wolverine]

the torque meter will move but you will need to stick it to the car to get the wheels turning. find some gravel or wet road and light it up.

[32TAXI]

My STD boost gauge drops out all the time, will test with replacement sensor soon. (Even got it sitting there!)

[beaugus]

Hey guys, thanks for all you're advise its all come in handy and we've now fixed the issue. It came down to a simple split in the vacuum hose at the sensor end and also we cleaned up the contact terminals of the sensors as well, this fixed the issue right away.

Front torque gauge also works, it was more or less dormant as we haven't pushed the car in anyway but took the car out to the farm on the weekend and as soon as we hit dirt road sure enough the gauge kicked in.

It's amazing how a little back tracking through the sensors and hoses turns out something so small and yet enough to disable the gauge, we ended up finding another sensor way out of nowhere where the issue was with the hose, but funny to think out of the 3 or 4 sensors required to figure vacuum that unless all sensors are plumbed correctly theres zero response from the gauge.

Anyway thanks again problem solved

[atomaly]

Hey guys, thanks for all you're advise its all come in handy and we've now fixed the issue. It came down to a simple split in the vacuum hose at the sensor end and also we cleaned up the contact terminals of the sensors as well, this fixed the issue right away.

Front torque gauge also works, it was more or less dormant as we haven't pushed the car in anyway but took the car out to the farm on the weekend and as soon as we hit dirt road sure enough the gauge kicked in.

It's amazing how a little back tracking through the sensors and hoses turns out something so small and yet enough to disable the gauge, we ended up finding another sensor way out of nowhere where the issue was with the hose, but funny to think out of the 3 or 4 sensors required to figure vacuum that unless all sensors are plumbed correctly theres zero response from the gauge.

Anyway thanks again problem solved

i was the same with the torque guage until i read up on how the whole system works

of course i had to test it too

yay for another RS4s