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i cleaned the MAS and MAF on saturday
Thanks - its been working perfectly - upto today started with no error about 25 times

my wife used the car today and drove 100miles and on the last startup in failed again

The code reader I have reads the live MAF and MAS sensor data

I just restarted 5 times just now after resetting the code - its been working fine - how I hate intermittent faults , even on PCs they are terrible things

so , next steps to look into are

the throttle body and EGR clean with Mr Muscle, the connections on the ECU and the 15min battery reset - so will plan those in over the next few days, and just go through a process of elimination

Also the gasket is available locally for £3.00

interesting my wife said it drove differently after the light was on and did not have the pull in the gears until after the revs/turbo kicked in - i have not noticed - but maybe a stranger , as she only drives a few times a year , may see it differently - But then if the engine light is on , it maybe a factor - does not seem lick limpmode , as i had a saab go into limp mode and it drove very differently

Thanks again

wayne

.Every damned thing seems to be connected!!

or you need special equipment or computers to link into the car - well I know about electrics and computers
But taking a bit out and connecting up to the battery and testing are all long gone.

I played around with old escorts and beetles and with a haynes manual  did my own serving and brake changes and most repairs for quite a few years

anyway, no garage available so i have positioned the car so i can at least get to the front safely , without anyine running me over , hopefully get to it over the weekend, if family do not take over

thanks for all the suggestions - any others while the tools are out welcome

thanks - just had a look under the wheel is it front of wheel or rear of wheel
screen shot looks like it the front of the car wheel
but these can be deceptive

@Audax
Thanks for that advice - any way to test the solenoid via a couple of wires off the battery , is it just a simple 12V DC on/off solenoid - last one I sorted out on a car was for a starter motor quite a few years back, when cars had points and you used feeler gauges
i will take it off again and recheck the extreme ends, but i was pretty sure I did all that and really made sure , as it was the third time I have taken it off

I'm happy to try anything if i can find the instructions on what to do , and although a novice on modern cars,  I do have some mechanical and electronic training as an apprentice and then worked on older cars. But they did not have anything like the electronics or special settings

i have the switch cleaner now,

The EMU (ECU)  best way to clean the connections

Is there a cover to remove and then take the connections OFF and clean and reseat them all - whats the consequences of doing that - will it reset anything if i remove a connection -

do i need to undo the battery and if so - what again are the consequences of that - windows pinch, key activation, etc etc

just so i know what to expect and dont do

looked at some youtube tutorials - but could not find one for the 93 in the wheel area

thanks for the continued support

if the EGR is sticking at the ends of its travel, you may be getting other codes too.

no , no other codes showing up on the code reader , just that one , and then I clear it out

@Audax

I'm guessing it's sticking at the extreme end of open/shut with this test but isn't a position that it opens too when in use? Try cleaning and lubricating again.

do you know how the pin on the solenoid should work , i expected a spring to keep the pin closed when not activated - so the pin fully in and then when activated the pin to be pushed out by the solenoid, so there was little movement in the pin , i did clean and got a slight movement.
The main spring valve I WD40 and cleaned up and that was really nice and loose , so i must admit , i thought I had sorted it the last time i took apart and was really disappointed when no change

@sgould

But, if the P0400 codes are the ones still there.  it still points to a connector/wiring problem under the front wing.  Have you cleaned in there with contact cleaner?

Yes, its just theone code P0400 on my code reader
and no sorry , i had a look around the area in the footwell but had no idea how to get access to that area

Do i take the front wheel off - and then remove the inside cover somehow ?

or is it inside the driver footwell ? - i looked inside the footwell and had no idea how to get all the trim off

its so easy to do this when you know how, or have a simple guide - is there any links to how to get that apart , and I will get the switch cleaner - I'm an ex electronic engineer so used to that type of thing , and not to bad mechanically - its just all the hidden clips on cars these days

The EGR valve removal waqs easy once i say the guide

Is removing the manifold and cleaning that area easy or prone to issues ?

thanks for the all help

Hi,
I have still not had the techII read the type of P0400 fault I have

But i wondered if we could narrow the 6 down

as
1) it only comes on when starting - neverwhen running
2) Its intermittent - so maybe 1 out of 10 starts it comes on
3) The engine is running perfectly when the light is on and i can rev upto and drive smoothly at 4500 revs and also at 70MPH
4) No smoke out the back
5) Engine is NOT lumpy and pulls well
6) No strange noise from the engine

I removed the EGR valve again and made sure I cleaned all the valve seating with carb cleaner and removed the solenoid and cleaned all that area - used WD40 to make sure the valve operated easily and smoothly
also cleaned the solenoid pin and made sure that clicked in and out cleanly

I will have to see if I can get to the ECU and check all the connections on the unit - any links to a step by step guide on how to access that part of the engine

any other suggestions as to what would cause the light and not effect performance

I have been told there are quite a few sensors and to remove the manifold and clean that out - not sure how easy a job that would be

as its due for an MOT in September this light if it comes on - would fail the MOT now

I'm unemployed currently and so money is extremely tight , so what ever I can do myself would be great - thanks

Thanks

WIS suggests an air leak between the turbocharger and the intake manifold. This turns off the EGR valve.  Possibly a split pipe or intercooler

would this only turn on the Light at startup and still let the engine run OK - had a split pipe on a vauxhall diesel and that would not start properly and run very badly

as i say the light only comes on occasionally and only on startup - no other time so far

thanks
no black smoke and appears to run OK

can I tell if this is a problem from a code reader I have - it does give a lot of live information if connected and running - but no idea what most of that means

its a
2012 Diagnostic D900 Universal OBD2 EOBD CAN Fault Code Reader Scanner Tool

thanks

the engine should be over-fuelling and giving black smoke from the exhaust.

no smoke, exhaust is fine

what is over-fuelling ?

OK thanks ,
The reader I have , not sure if it gives the rest of that code - next time it happens I will have a look

WIS suggests that there is a fault in the female connector of the engine control unit.  Either corrosion, depressed pins or lack of clamping in the pin connections.

where abouts is that , and can I check it ~?

WIS suggests an air leak between the turbocharger and the intake manifold. This turns off the EGR valve.  Possibly a split pipe or intercooler

I'll have a look around the pipes and see what I might be able to see - can I put a soapy liquid on the pipe and see this issue , and where are the pipes exactly

WIS suggests an air leak between the Mass Airflow Meter and the turbocharger.  This will cause the car to drop into limp-home mode. Possibly a split hose in the inlet or crankcase ventilation.

can runs perfectly , I did 4 runs over 100miles in a day
so 100miles stop for 15mins and the 100miles
then stopped for a few hours and 100miles stopped for 5mins and then it came on - reset and and another 100mile trip
and the engine seems to run fine and no issue in performance at all
infact it appears to have run better after i first cleaned out all the gunge and it did have loads in the valve

thanks very much for the help

2007 57 plate Saab 93 150bhp engine
EGR Error Code following EGR valve clean

I cleaned the valve and still had the intermittent light

The light only comes on when I start and Never when running - and its only intermittent - I have a code reader and its the recyc error P0400 code
So i took out the valve again

Cleaned it all with a toothbrush
Cleaned all the engine side
took the solenoid off and checked the valve worked and cleaned all that spring and valve area, and solenoid face plate
The solenoid Pin was in - as i would expect it to be , a spring holding it closed - so when the valve is needed the solenoid pushes the pin out
Is that correct ?

Why did i only get a light on as the car started - never while running - I assume the EGR valve operates during engine run - or is it only on a startup - the light came on even after driving 200 miles stopping for 10minutes and then started and light was on.

resetting the code - it then may be 10-20 starts before it comes on again

if it comes back on again - apart from a faulty intermittent solenoid what else could be the problem

Hi,

great to be back on the forum

Saab 93 57plate convertible

Need to replace the bulb in the front offside foglamp, as i'm getting a warning on the dash now
and I looked around the car and it does not seem a simple job ......    it must be easy

how do i replace the bulb please