Ok, now its still nice to know what goes wrong with your car, and this on mine is fooked and im waiting for the part to come in so it can be fixed
But what exactly does the neutral position switch do and apart from making my car seem a little laggier and have no top end (not that im pushing her with this fault anyway), precisely what is the purpose of said switch?

Thanks in advance

Tony

 

have no idea my scoob don't have 1

 

Tells the ECU when the gearbox is in neutral (or not).

Does what it says on the tin, and therefore give the ECU a way of modifying the engine's behaviour when it knows there is no load on it.

Depending on which unit you look at, there will be hundreds of lines of code that don't run (or run different) according to the position of that switch. One obvious example is acceleration enrichment, which is switched off if you tread on the throttle with the car in "neutral", thereby contributing to the Impreza's fantastic fuel economy. ()

 

i had to have mine replaced last month tony...doing some searches i think its a fairly common thing. i was having a power run and the power was down....ecutek then said it was that stupid switch. think it made the car run rich as well...

 

On a NewAge STI (if faulty !) it disables the AVCS so the car will be flat on power and smooth as silk...

Mine caused problems first time she was mapped, I took her out to show a pal how awesome it was with 340 bhp and it felt like 170 bhp instead.

No-LOL.

dunx

 

i found out the other day that my one isn't connected. one of the people who had the car before had swapped lots of bits into the car, ie ecu and wiring loom from a later car but decided not to change the sensor to the right one and i hadn't noticed it until it went to the garage the other day.

 

Is this switch on all Imprezas? I have a V4 STi and was never even aware that this switch existed....

 

Why you waiting for a new part..... you can fix "mod" the one you have for about zero pence!

 

I'd pay to see YOU do it Shaun, do you even know where the switch is?

 

Reducing the thickness of the aluminium sealing washer can sometimes resolve the issue - The switch has a nylon tip, which can wear away

OP - remove your current switch, and inspect the tip for wear. If it's visible, you could try doing the above. - No guarantees though

 

where abouts is this switch located so i can check mine please

 

It's the rear of the two switches, on the LHS of a 5 speed box

 

Isnt it on the side of the gearbox not too far away from the reverse lights sensor ??

there cant be too many switches on the gearbox, the neutral one is the higher mounted one of the 2

 

Ok I walked into that one
No doubt this is what is causing the slight lag im getting between gear changes, still didnt know what was up until she was on the rolliing road and the monitor picked up it wasnt beiing activated when changing gears (still the car produced 323lbs of torque and 310bhp at 5570 on the spec c before hitting what seemed like a brick wall )

Rich, would mess about with it but as the part is ordered I may was well just fit the new one

Cheers all

Tony

 

Did it 2yrs ago you plank!

 

tony where did you buy the part and how much ? if you dont mind me asking

 

Mine went a few months ago, it ping'ed during a mapping session.
Had to fork out £110 for new new one, then was mapped again..lol..

 

just bought mine to do the weekend, part from subaru was about £45inc vat, there is someone on ebay selling new genuine ones too, with delivery also work out at about £45 im doing mine on a ramp but no doubt with a trolley jack and some swearing it can be done on the floor if you know how to hold a spanner

 

Not fitted yet as need to get the car to the garage, dont think they are that expensive

Tony

 

Is this switch fitted to all turbos

 

Just new age cars i think.

Tony

 

You can bypass it if it ever goes in the future.

 

Not heard of this before.. Does it trigger a fault code / CEL ?? Or is it mainly found when re-mapping ??

 

mine was found when put on the rollers with loss in power and running very rich.....

 

Is there a way to test it? Or are you best just removing it for a visual inspection?

Whereabouts is it located on the 6sp box? I want to check mine for peace of mind...

 

You could download software such as ecuexplorer and that shows it in I/O form when in and out of gear.

Mine had worn on my bugeye sti and the easy way to guess it's gone is if it feels slow sometimes. Mine would sometimes feel rapid and rev well, then another time you'd floor it it'd feel like someone had removed th turbo and just very linear. On the sti it enables the avcs so you loose the 'kick' of the cam timing change without it.

I bought a new switch from Subaru. Haven't fitted it yet as I modified my old one (got a copper washer and sanded it down thin then swapped it with the thick washer on the NPS thus moving the tip of the switch closer)

 

Thanks, I'll have a look when I can get the car out the garage..

 

oh baby this could be my prob when i change gear i get a slight hesitation (bit of a slutter kind of) then the car revs but feels flat doesn`t feel like it has the avcs kicking in. also seems to be using some extra fuel.

2007 hawkeye sti with 27k on it. think it could be this NPS? how could i chech and where would i find it on a 6 speed box hoes it need a ramp? weve got over 4ft of snow in drive.

 

It could be, mine feels slightly laggy and she aint meant to being twin scroll

 

cool cheers bud Tony is yours a hawk spec c? so glad you stuck this thread up think you have sorted me out ill let you know.