MOT passed - but...............

[johnf]

It might sound a bit strange but drove the T11 for the first time today, to the MOT station where it passed.

This is the first time since Oct it\'s been driven and of course has the replacement engine.

When I bought the engine I was aware that the turbo was shot but I had another one from the original engine which I believe to be ok so I swapped it for that.

However I have no boost and a some smoke.

So where to I go from here, is it time to get it down to Carl or are there things I can do / check first.

Seems to run ok, starts hot & cold.

Fond other unconnected multi-pin plugs [pic] any idea what these are?

Apart from changing the turbo the only other thing I\'ve done is the air pump removal.


Thanks

[1990_fc3s_t2]

maybe your wastegate clip has come off and it just stays open? I think the green connector is the fuel pump jumper, the other one i thought was the afm plug but dont think it would run not connected unless your standalone?

[johnf]

Trying to find something obvious and the arrows on this look to be pointing the wrong way.

[dthebuk]

pretty sure the green clip is for fault finding, mine isn\'t clipped into anything either

[Prof]

Yep - the green clip is a test clip - not sure about the other one.
 
The arrowed thing is the Recirc - so it should be coming from the turbo to intercooler pipe and going back into the intake - that\'s the direction of flow - can\'t really tell from the pic but I reckon its in the correct way.
 
As to the turbo not boosting - dthebuk may well be right - my actuator arm fell off and you get next to no boost at all.  You should be able to see if it\'s come off without taking it all apart - if you\'ve still got the heatshield on, undoing the top 2 nuts will probably free it up enough to get a look in there.  Those pesky circlips come off all too easily.

[pdtaylor18]

If that was the original turbo then it was a good turbo but who knows what that fool did to the car anyway. Smoke can not be too bad if it passed the MOT and especially without an airpump or CAT.
My sort of MOT station.
Worth a look at that wastegate clip and if its come off then buy a brand new one as they do suffer from heat and corrosion down there. That white plug does nothing, not sure what it does but i am sure that was free for me as well. Remember that this car has a S5 loom throughout even though its a JDM car.

Congratulations on it passing.

[johnf]

Where does the boost gauge get it\'s reading from?

Is it like the FD, being air fed?


.

[Brett]

The boost guage (assuming it\'s the stock one) is fed from the senor mounted on the suspension turret near the air intake.

I think grinder had the same problem a few years back, it\'s a fairly simple fix provinfing u don\'t mind the odd skinned knuckle

[Prof]

The stock boost gauge is electronic - it tee\'s off the boost signal from the MAP sensor.

[m1tch]

It might be an idea if you aren\'t running an aftermarket gauge, to run a mechanical boost gauge as the car might be boosting, but the gauge might be at fault.

[grinder]

my wastegate arm popped off - but it did it when i was changing the down pipe - so probably my fault !! LOL

if i can remember tonight i will pop the bonnet on mine and have a look for the white plug thingy

i take it that you have a boost controller on there .. is that reading anythign ?

[johnf]

No boost reading at all and driving it to and from the MOT it didn\'t seem to have any get up and go.




.

[Prof]

No boost reading at all and driving it to and from the MOT it didn\'t seem to have any get up and go.
 
 
 
 
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John,
 
Where does the gauge sit when the engine is off but electrics on, and then when idling ?  Does it show vacuum ?

[johnf]

zero

not + or - and doesn\'t move at all

[Prof]

That means your MAP sensor isn\'t seeing vacuum then - and probably also means the car is running in a limp mode with fixed maps.
 
Check the hose to the MAP - it should ideally be plumbed into the vac nipple under where the BAC valve is.