O.K now I do have an update on the overfueling and running rich tale.
The car is no longer ovefueling or running rich and neither am I as
I'm £560 poorer :P
Promax have fixed the loose pipe they found on the turbo but the car was still apparently running too rich. Some fault finding later and a new Air Flow Meter
a(Bosch refurb unit) was fitted so the car I am told is now running correctly.
I know the AFM was always a likely suspect and TBH I don't think that Mr Rolling Road is to blame. The AFM had clearly been cut open and resealed before and as I have previously mentioned, the adjustment was right up one end on the screw which is not the norm from what I have read.
It will be interesting to get the car back and see does it drives any better than it did when I bought it. It will also be interesting to see if it does a few more miles to the gallon. I know we don't buy these cars for economy but assuming the AFM was always knackered it must do a few more MPG now. The fuel tank has super unleaded in it at the moment so it will be a fair test drive.
I'll drive the car back from Bedfordshire in a few days and close this particular tale with my opinion on how the car is driving. I would have liked to have spent that £560 on servicing and 'improving' the car but since we own Porsche cars we're going to take the odd hit arent we !.
Theres plenty more 'Classic Porsche' ownership news to come though.
Regards Mas
Wednesday 31 March 2010
Monday 15 March 2010
Rolling Road, Porsche meet , up to Promax busy busy
Well, at least I can't say tht March hs been uneventfull so far.
Early on in the month, I went to my second P.C.G.B meet having gathered up a few other folk to come with me , well 944 owners to come as well to be precise. This made a lot of difference but also one or two folk made a point of saying hello anyway including the P.C.G.B Le Mans organiser with who I had a fair old chat. With the support of my fellow 'front enders' and the other people I got chatting with the evening was actually very pleasent. I met too many folk to mention in detail but it was a sociable evening and I even met someone with whom I shared a little history.
Moving on to things actually Porsche. I had thought that my car ran extremely well and without any real fault. I nearly sold her a few weeks ago on impulse
(nearly bought another Porsche again) and I'm so glad that I didn't. Out of curiosity I had decided to go for a rolling road session and since there wasn't a group one arranged for the near future I sorted myself out a mid week slot at a garage near to Royston which has a firly modern rolling road. Firstly I would say if you havn't done it then do it as it is interesting just to see how the thing works. On arrival you sign your disclaimer of course ( welcome to 2010) then you are strapped in or at least yuor car is and then they run the car up slowly. As the car is warming they listen to the engine with a stethospcope no less and measure the exhaust for fuel and other strange measurements are taken. Once your car has a fairly clean bill of health they gradually warm it up to a ' power run' which of course is the main reason for your visit :).
As my car started to build up I had been told that there should be no more than 3000parts fuel in the exhaust gases. The revs stepped up and the turbo kicked in with an almighty roar at which the exhaust fuel particulates went over 14,000. Clearly the car was not right and eventully it even started to cut itself off presumably for safety. I had no idea this problem existed prior to my visit.
The owner offered to check the fuel pressure regulator and the airlow meter
( at cost of time of course)to see if something could be simply rectified and I was very hesitent to let him do this not for financial reasons but because he was not
' my Porsche specialist'. Eventually I decided that since he had my car on a rolling road and what better way to diagnose the car ? , I would let him take a look. In hindsight I wish I had not agreed as I had always intended to go to Promax after the session for a bit of performance enhancement. After this man 'tweeked' my Airflow Meter the car now has the same problem but in a more serious way. Leaving with a car running worse than it went in I was a very unhappy bunny. Fortunately the nam didn't have the cheek to charge me for the 2 and 3/4 hours rolling road time we used but only for an hour. In normal circumstances I would have insisted he that he fix the car for free at least back to how it went in, however it was clear to me that he was not the person to be tweeking my Porsche 944 Turbo.
So today I drove the rather awkward journey to Promax where I am confident that they have the knowledge to fix the car properly but of course I will report back the result ( and cost) as soon as the car is sorted.
As a side note I have been invited to join a group of 8 or 9 non Porsche club folk wh live local to me on a 4 day trip to the Le Mans 24 hour. I gracefully accepted the invitation and the result of that weekend wil be a long blog entry I am sure.
It has been an eventfull Porsche month so far I think.
Regards Mas
Early on in the month, I went to my second P.C.G.B meet having gathered up a few other folk to come with me , well 944 owners to come as well to be precise. This made a lot of difference but also one or two folk made a point of saying hello anyway including the P.C.G.B Le Mans organiser with who I had a fair old chat. With the support of my fellow 'front enders' and the other people I got chatting with the evening was actually very pleasent. I met too many folk to mention in detail but it was a sociable evening and I even met someone with whom I shared a little history.
Moving on to things actually Porsche. I had thought that my car ran extremely well and without any real fault. I nearly sold her a few weeks ago on impulse
(nearly bought another Porsche again) and I'm so glad that I didn't. Out of curiosity I had decided to go for a rolling road session and since there wasn't a group one arranged for the near future I sorted myself out a mid week slot at a garage near to Royston which has a firly modern rolling road. Firstly I would say if you havn't done it then do it as it is interesting just to see how the thing works. On arrival you sign your disclaimer of course ( welcome to 2010) then you are strapped in or at least yuor car is and then they run the car up slowly. As the car is warming they listen to the engine with a stethospcope no less and measure the exhaust for fuel and other strange measurements are taken. Once your car has a fairly clean bill of health they gradually warm it up to a ' power run' which of course is the main reason for your visit :).
As my car started to build up I had been told that there should be no more than 3000parts fuel in the exhaust gases. The revs stepped up and the turbo kicked in with an almighty roar at which the exhaust fuel particulates went over 14,000. Clearly the car was not right and eventully it even started to cut itself off presumably for safety. I had no idea this problem existed prior to my visit.
The owner offered to check the fuel pressure regulator and the airlow meter
( at cost of time of course)to see if something could be simply rectified and I was very hesitent to let him do this not for financial reasons but because he was not
' my Porsche specialist'. Eventually I decided that since he had my car on a rolling road and what better way to diagnose the car ? , I would let him take a look. In hindsight I wish I had not agreed as I had always intended to go to Promax after the session for a bit of performance enhancement. After this man 'tweeked' my Airflow Meter the car now has the same problem but in a more serious way. Leaving with a car running worse than it went in I was a very unhappy bunny. Fortunately the nam didn't have the cheek to charge me for the 2 and 3/4 hours rolling road time we used but only for an hour. In normal circumstances I would have insisted he that he fix the car for free at least back to how it went in, however it was clear to me that he was not the person to be tweeking my Porsche 944 Turbo.
So today I drove the rather awkward journey to Promax where I am confident that they have the knowledge to fix the car properly but of course I will report back the result ( and cost) as soon as the car is sorted.
As a side note I have been invited to join a group of 8 or 9 non Porsche club folk wh live local to me on a 4 day trip to the Le Mans 24 hour. I gracefully accepted the invitation and the result of that weekend wil be a long blog entry I am sure.
It has been an eventfull Porsche month so far I think.
Regards Mas
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