I have a Saab '06 93 TID 150 bhp, with 101k miles, which I understand has a similar (same?) engine as many VX, Fiat and GM models.
I followed the excellent HoTo on this site to remove and clean the EGR valve about 20kmiles back, to fix starting and low rev problems.
In the last week, I have had some start issues, and removed the EGR again. Not much carbon build-up, this time. I wasn't able to remove the plunger from the solenoid body, but it seemed to be moving OK (drilled hole, and added WD40 - but concerned about hitting it too hard and damaging it - ha, ha). Valve was also moving freely.
Put it back on, but now have huge starting problem (that is, much, much worse than what I was trying to fix). I assumed this must be no power reaching the solenoid, and have tried to re-connect the lead several times, with no improvement. I removed the valve again, checked, re-cleaned, then re-fitted. Seemed to start OK. But... no power at all. Now it will hardly start.
Can anyone advise what I might be missing here?
Anything I can check to confirm power is reaching the solenoid, or to test that the valve is (not) working? Would I be better off just replacing the EGR, given the age, and having already removed/cleaned once?
I don't want to buy a new valve (seems to be around UK £90) only to find there is (still) a problem somewhere else...
Any thoughts and advice gratefully received (other than "if it ain't broke, don't fix it" :-)).
Thanks in advance/paul