Question about 1993 Saab 900

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Low level fuel lamp

My low level fuel lamp stays on even though I have plenty of gas in the car. It is a 1989 Saab 900 turbo.

Any ideas on what to look for?

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  • fasulo Jul 09, 2008

    Its not my check engine light that stays on, its my low fuel level light. Still a gas cap issue?


  • Anonymous Mar 17, 2014

    gas leaking out of injector



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Beleive it or not its more than likely a bad gas cap,pressure in the gas tank is leaking pass the cap,on some cars it makes the check engine light come on

Posted on Jul 08, 2008


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1 Answer

The coolant level keep coming on even though the level of coolant is ok.

I believe your problem may be your low coolant sensor(located in the overflow res.), they tend to get gummed up and quit functioning. Also before you chase that, be 100% sure your coolant level is actually full.

Oct 29, 2013 | 1995 Saab 900

1 Answer

Warning light for low fuel stays on

The sensor is part of the fuel pump module inside the gas tank.
The signal is sent to the body computer, so it could be a faulty module or a problem with the body computer.
The circuit would need to be checked with a meter.

Feb 08, 2013 | Volkswagen Cars & Trucks

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Do i have to remove the engine to time the engine on my 1989 saab 900 turbo

There should be an access cover on very top of the housing over the flywheel. May have a rubber plug over it.

Nov 29, 2012 | 1989 Saab 900 4 Door

1 Answer

1989 Saab 900 low level fuel light

You don;t say whether the fuel gauge is reading accurately, or whether it's always on empty. If the gauge is always showing empty, it's most likely a problem with the sending unit in the fuel tank. Check the resistance across the two terminals of the sending unit.

On a C900, the fuel sender level unit is separate from the fuel pump and located on the right side top of the tank, accessible by removing the trunk floor lift up panel (the pump is located on the left side top of the tank.
Possible problems are: electrical line off or broken, float not working (it's fairly delicate); or gauge not working.

Test the resistance of the sending unit with the lines disconnected, the resistance should be 2.6 to 3.8 ohms full tank, 63.3 to 67.5 ohms empty tank; and test for voltage across the top of the sender unit, if no voltage, that's likely the problem!

If the gauge is otherwise reading accurately (showing 'full' for a full tank, etc) then the problem is likely a gauge malfunction and can be simply replaced.

Good luck!


Jul 10, 2008 | 1989 Saab 900 4 Door

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