you helped me recently with a vauxhall egr valve and i received advice about a flap controlled by a vacuum valve and that was sticking and WD40 has fixed it
now
I have a 93 Saab 150 BHP Engine and the engine light often stays on when starting and the code is the gas recirculating error P0400 - I have a code reader , which also will read the engine running
I have removed and cleaned out the EGR valve (square onto the engine and ellipse onto the pipe ) and it was very full of carbon
fitted new gaskets
however the light still stays on - ONLY when starting and maybe after 10 or more starts - if you dont wait for the check to finish it will come on more frequently
when the light is on it run fine, infact since cleaning out its running much better.
I took the EGR valve off and took the solenoid off and cleaned all that out and made sure the valve moved and cleaned all the seating for the valve
same issue 10 or more starts and it comes on again
following the advice on WD40 on the vauxhall
I took the EGR off again yesterday and used WD40 on the solenoid pin and was moving slighty clicking
Also WD40 on the main valve moving parts, which was quite stiff and so again WD4 on the mechanism and all the two valve part and the spring and it freed up immensely - so i was sure that had resolved the issue.
But after 5 starts , tonight the light stayed on again at startup - in fact it just does not go out from turning the ignition and starting
resetting the code - it will now work for the next few days (about 10 starts)
the car runs really well
NO smoke out the exhaust
revs upto 4500 with no issues
pulls really well
been on a comple of 100 mile trips and it runs great
So i wonder what else it may be - like the vauxhall a paddle somewhere needed some WD40 on a valve - or something else cleaned out.
I have been on another forum when this first started , and advised that it maybe the ECU , which is under the front wheel panel
I have in the past had a steering lock warning come up - that has happened twice in the last 2 years 10,000 miles.
any advice welcome, as i do not have the funds to put in a garage and would like to get resolved myself if possible.
And certainly could not afford a new ECU - which i suspect would be in 4 figures
As MOT due in Sept , i don't want the light to come on when they start the car and fail the test
thanks
now
I have a 93 Saab 150 BHP Engine and the engine light often stays on when starting and the code is the gas recirculating error P0400 - I have a code reader , which also will read the engine running
I have removed and cleaned out the EGR valve (square onto the engine and ellipse onto the pipe ) and it was very full of carbon
fitted new gaskets
however the light still stays on - ONLY when starting and maybe after 10 or more starts - if you dont wait for the check to finish it will come on more frequently
when the light is on it run fine, infact since cleaning out its running much better.
I took the EGR valve off and took the solenoid off and cleaned all that out and made sure the valve moved and cleaned all the seating for the valve
same issue 10 or more starts and it comes on again
following the advice on WD40 on the vauxhall
I took the EGR off again yesterday and used WD40 on the solenoid pin and was moving slighty clicking
Also WD40 on the main valve moving parts, which was quite stiff and so again WD4 on the mechanism and all the two valve part and the spring and it freed up immensely - so i was sure that had resolved the issue.
But after 5 starts , tonight the light stayed on again at startup - in fact it just does not go out from turning the ignition and starting
resetting the code - it will now work for the next few days (about 10 starts)
the car runs really well
NO smoke out the exhaust
revs upto 4500 with no issues
pulls really well
been on a comple of 100 mile trips and it runs great
So i wonder what else it may be - like the vauxhall a paddle somewhere needed some WD40 on a valve - or something else cleaned out.
I have been on another forum when this first started , and advised that it maybe the ECU , which is under the front wheel panel
I have in the past had a steering lock warning come up - that has happened twice in the last 2 years 10,000 miles.
any advice welcome, as i do not have the funds to put in a garage and would like to get resolved myself if possible.
And certainly could not afford a new ECU - which i suspect would be in 4 figures
As MOT due in Sept , i don't want the light to come on when they start the car and fail the test
thanks