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
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