Dads taxi

Under a previous post I thought I had a problem with the redundant Up pipe sensor following the up-pipe replacement.

Having done the resistor install, I went to the garage today to have the fault codes reset.

The upside is that the resistor fix works, the downside is I have the dreaded P1088 & P1090 Codes showing.

Interesting to see that the most likely cause is damage from when the up-pipe was changed.

More internet research required. Looks like I need to find a 12 year old amateur gynecologist... as well as a cheap source for the part.

Gigsy

1088 & 1090 are TGV related IIRC? In which case, just swap the sensors / motors out... it's fiddly but fairly easy to do. I may have either the motors and/or a sensor - though the sensor is the same as the throttle position sensor IIRC so you should be able to pick those up via eBay.

Not sure why these would fail because of the up-pipe swap though - I doubt it's related since they have nothing to do with the up-pipe.... generally, it's the heat from the turbo that eventually cooks them.

__________________
Was MY03 FXT (262bhp) MY03 WRX (271bhp)
Now MY05 MCS, Z3 2.8, X3 3.0d, Vespa ET4 & BMW F700GS

Dads taxi

Thread Starter

Thats right Gigsy thanks.

My comments regarding failure are simply those expressed by Peaty so I would ironically be happier if it is fair wear and tear.

I need to research the matter more fully but I assume you do the sensor first.

Can it really be more fiddly than the spark plugs?

If you have spares that may prove useful thank you.

Gigsy

The sensor on the drivers side (RHD) is quite a pain to get to as the turbo limits access but with patience it's possible to do without removing the manifold.

I found a few How-Tos on line and cobbled it together from there. Will see if I can find them.

The sensor needs to be pre-loaded slightly which is the tricky part (easy if the manifold is off the car) as I found I couldn't turn it in the space available so I managed to achieve it by rotating the TGV spindle and then hold it in place with a screwdriver whilst I slipped the sensor into position - once you get it apart you'll see what I mean.

Swapping the motor is easy enough and will show if it really has stuck in the closed position (which is the fault state that will cause the car to go into limp home mode). Much more likely that the sensor is fubared than the motor though.

Do you need both sides or just the one?

__________________
Was MY03 FXT (262bhp) MY03 WRX (271bhp)
Now MY05 MCS, Z3 2.8, X3 3.0d, Vespa ET4 & BMW F700GS

Dads taxi

Thread Starter

If you have further information or how dos that would be great thanks.

I think from these 2 codes I only need the right side = uk drivers side?

I will need to find a pic showing the motor position - so far I have only found the sensor.

Gigsy

Motor is at the front (IIRC you need to remove the pipe from the air box to the pipe that goes under the manifold in order to get to it)... sensor at the back. I have a couple of the actual TGVs on their own so will take some photos for you.

__________________
Was MY03 FXT (262bhp) MY03 WRX (271bhp)
Now MY05 MCS, Z3 2.8, X3 3.0d, Vespa ET4 & BMW F700GS