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Matt7
Joined: 24 Mar 2010
Posts: 11
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 Posted: Tue May 31, 2011 3:55 am Post subject: 97 900s turns over but wont start |
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| Its been running great then yesterday wouldn't fire. I have good spark. How can I check the fuel pump or the fuel pump relay? |
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protech5
Site Admin
Joined: 07 Aug 2007
Posts: 1418
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| Posted: Tue May 31, 2011 10:42 am Post subject: Re: 97 900s turns over but wont start |
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sb
Joined: 12 Sep 2008
Posts: 1491
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| Posted: Wed Jun 01, 2011 2:21 am Post subject: Re: 97 900s turns over but wont start |
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| CK POWER GOING TO PUMP SHOULD BE 12V IF SO AND U CANT HEAR PUMP THEN IT IS PROBABLY THE PUMP |
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Matt7
Joined: 24 Mar 2010
Posts: 11
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| Posted: Thu Jun 09, 2011 12:45 am Post subject: Re: 97 900s turns over but wont start |
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| I checked the power at the pump I have 4 volts on one wire and nothing on the other. I am assuming the one with 4 volts is for the fuel guage. Relay tested out fine. Any guesses? |
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Matt7
Joined: 24 Mar 2010
Posts: 11
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| Posted: Thu Jun 09, 2011 12:46 am Post subject: Re: 97 900s turns over but wont start |
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| Forgot to say the pump will not run. Have new one and I plugged it in and that wont run either |
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sb
Joined: 12 Sep 2008
Posts: 1491
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| Posted: Sun Jun 12, 2011 12:12 am Post subject: Re: 97 900s turns over but wont start |
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| EITHER THE PUMP RELAY OR THE ECU |
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ryker_sf
Joined: 03 Jun 2009
Posts: 18
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| Posted: Sat Jun 18, 2011 8:08 am Post subject: Re: 97 900s turns over but wont start |
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I have been told that a bad Crankshaft Position Sensor can cause the fuel pump to stay off. I had this problem a while back, and I fixed it by replacing the relay by the foot pedals (very annoying). My problem was that the relay was indeed bad, but the new one would only sometimes fix my problem. It turned out to be a bit of broken wires, and the Crankshaft Position Sensor as well. A triple whammy.
Personally, I very much dislike the multitude of problems on Saabs that have the same symptoms. I would like to have a computer message for every component that fails, ideally.
It took me a LONG time to finally fix that no-start.  |
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FortEric
Joined: 14 Feb 2011
Posts: 5
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| Posted: Wed Jun 22, 2011 7:52 pm Post subject: Re: 97 900s turns over but wont start |
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Ryker,
What relay was it by the foot pedals, and where was the broken wire? I have had intermittant no starting problems with mine as well and can not figure it out.
Thanks |
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sl94heap
Joined: 18 Jun 2010
Posts: 16
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| Posted: Thu Sep 08, 2011 8:17 am Post subject: Re: 97 900s turns over but wont start |
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| I am having a similar problem, but I have swapped relays and they both check good with a volt meter, this was an engine swap and it ran great before I moved it I even moved the entire tank/fuel pump assembly so the only fuel system part not off of the running car are the actual lines and the ECU. What lines/wires (where ) did you have a beak in? |
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marhels
Joined: 21 Sep 2011
Posts: 1
Location: UK
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| Posted: Wed Sep 21, 2011 8:24 pm Post subject: Re: 97 900s turns over but wont start |
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A couple of things, (alright 4 things) 
1 Check rev counter when cranking...if it don't move its the crank position sensor
2 If it does move its the pump
3 The pump only runs when cranking or when the engine is running
4 Check the fuel pump fuse
My car (a Brit) doesn't have a relay or a fuel cut-off switch. It just felt like it ran out of fuel. |
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