SAAB 9-5 non start problem
NEWS
 

  1. Welcome to Saabscene General discussion forum for Saab

    Welcome to Saabscene - a website dedicated to all things Saab.

    You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, Join Saabscene today!
     
+ Reply to Thread
Results 1 to 3 of 3

Thread: SAAB 9-5 non start problem

  1. #1
    Saab Newbie
    Join Date
    Dec 2011
    Location
    Halifax, West Yorkshire
    Posts
    2

    SAAB 9-5 non start problem

    Hi Guys,

    Firstly hello everyone!! Sorry for this being my first post. I do a lot of lurking, but I don't tend to register a lot of the time but now I am here and I am hoping that you might be able to help me with our family daily, Digger as he is named.

    Digger is a 1999 SAAB 9-5 2.3 LPT (with 201,100 miles on the clock) and few days ago I was changing the pollen filter, so I had the glove box out. I changed out the filter and put everything back, I moved up to the scuttle panel and removed the wiper linkage to inspect the blower motor. The car was starting before I did any of this work.

    All this was returned as I found it, and I sat in the car and tried to start it. Crank, crank, crank..... no fire up. It had been running earlier that morning.

    If someone had told me this same scenario I would be almost 99% sure that what ever they had fiddled with would be the root cause of the non start. I promise hand on heart that I have checked every wire in the areas I have been in. The only other thing to note really is that I have the bonnet up for quite a long time and I had the ignition on for a long period.

    There are other complications, this car runs and ALDESA RSI+ lpg system, this is hooked directly to the ECU and for some reason this prevents me pulling codes from the car with an ODB reader. Why I do not know?

    Now onto what I have checked and what I think I know....

    There is no spark, there is no prime sound with the fuel pump. The main relay has 2 12v feeds and good earths, so this tells me that the ECU is switching the relay? The injectors are not getting any power.

    If I give a 12v feed to the lower connection on fuse 19 (fuel pump fuse) I can run the pump and I can get fuel to the schrieder valve on the fuel rail.

    I have swapped over the fuel pump relay with wiper relay and tested it, so I know the relays are ok.

    I have even done a quick check on the CPS and it is showing a varying resistance as the engine is cranked, but then again my limited knowledge tells me that this wouldn't cause the fuel pump not to run.

    I have checked EVERY fuse and relay that I can find. I have locked and unlocked the doors, left the battery off over night just to try and do a reset.

    I have one key with the car and that has always started it, I don't get any warning messages other than TEST THE BRAKES on the SID.

    It is seriously acting as if a fuel pump cut off or crash sensor has gone off and as far as I know this model doesn't have one?

    Some other things to note:- The battery has full charge, I have checked the Earth to the inlet manifold and that was loose. Great I thought, got it. Tightened it and nothing!

    I have run out of ideas, I don't really know where to go next. I am open to ANY ideas you may have, even if it means me going back and checking where I have been before. Maybe there is something in the areas I have been that needs extra special attention??

    Thanks in advance for any help you might be able to give me.

    Jay

  2. Remove Advertisements
    SaabScene.com
    Advertisements
     

  3. #2
    Saab Newbie
    Join Date
    Dec 2011
    Location
    Berkshire, UK
    Posts
    5

    Re: SAAB 9-5 non start problem

    HI, unless someone has already said this, otherwise it sounds like it could be the coil pack.
    Ive had the same problem, although mine has a tendency to stall whilst driving, and not restart!

    Oh and Im currently in the process of changing no. 4 / 5 coilpacks in as many months!!

  4. #3

    Re: SAAB 9-5 non start problem

    Just to be sure its not a fuel problem u should spray carb cleaner in one of the vacuum opening and try cranking. if it starts even for a second u know everything is working except u dont have fuel pressure. if it still just cranks with no sign of starting then u have some serious troubleshooting to do my friend. GOOD LUCK

  5. Remove Advertisements
    SaabScene.com
    Advertisements
     

+ Reply to Thread

Similar Threads

  1. 95 Won't start - DI problem?
    By phcx in forum Classic Saab 9-5 (1997 - 2009)
    Replies: 3
    Last Post: 03-08-2011, 07:10 PM
  2. 1993 SAAB 9000CD Cold start problem.
    By something in forum Saab 9000 (1984 - 1998)
    Replies: 4
    Last Post: 02-07-2011, 01:11 AM
  3. Another (no) start problem
    By berkbs in forum Saab 9000 (1984 - 1998)
    Replies: 7
    Last Post: 12-07-2007, 12:27 PM
  4. hot start problem again
    By gacsalyi in forum Classic Saab 9-5 (1997 - 2009)
    Replies: 5
    Last Post: 08-13-2004, 06:28 PM
  5. start problem
    By gacsalyi in forum Classic Saab 9-5 (1997 - 2009)
    Replies: 3
    Last Post: 05-19-2004, 03:52 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Powered by vBadvanced CMPS v4.1.2