Question about 1997 Saab 9000

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ACC Flap Actuator Motor doesn't work

Heat keeps coming into cabin and cannot shut off. A/C is not working properly. Replaced thermostat with no change. I think that the ACC Flap Actuator Motor #30542972 needs to be replaced. I don't know if any other model or year uses same part. My care is a 97 Saab 9000 2.3T

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SOURCE: what type of oil on 97 saab 900

If turbo in a temperate climate, use 0W40 or 5W40 synth for year round protection. If naturally aspirated, you can use the same or 5W30. If you live a particularly hot climate, 10W40 will work just fine too, and you might even be well off to go to 10W50, at least in the hottest months. Turbos generate a lot of extra heat which contributes to quick long chain molecule shear down in multi- viscosity oils. Accordingly, a 40 wt oil will quickly thin down to something more like a 30 weight oil. Oil pressure in these cars is marginal at idle, so keeping a close eye on good viscosity is pretty important, as that helps keep pressure up.

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SOURCE: where is the thermostat in a 900s oh. 97 saab 900S

Oil change interval has nothing to do with operating temperature. If your coolant is full, feel the upper radiator hose, when the vehicle is up to temp. if cool , thermostat is back from that hose,

Look for air bleeds, and read owners manual, some cars have coolant bleeds. Also, heater on high when filling coolant or risk bubbles...

My thought is that your fans may not be kicking in. They should cycle on and keep temp low enough. test them.

Posted on Sep 15, 2009

saabreur
  • 51 Answers

SOURCE: My 92 Saab 900 blows cold air constantly and the

Unless you have symptoms of over-heating, I rather doubt that your water pump is a problem. I recall that my water pump had a metal impeller (1992 C900); I haven't heard of a plastic impeller on a Saab pump before. (Most pump failures are the bearing seal, and the pump leaks coolant) If your temp gauge is slightly low (and was OK before) I'd rule out water pump issues.

You might have one or more of the following issues:

  1. did you use a Saab thermostat? The Saab stat has three stages (no flow to rad - cold; flow to rad and heater core - normal operation; and no flow to heater core, full flow to rad - overheating) that most after market stats don't.
  2. did you use a low temp stat? this opens at about 82 deg (rather than 89 deg), and will run cooler during the winter, hence you gauge will show lower than the mid point. The big benefit is that your engine won't overheat during the summer (a very good thing!) with the low temp stat.
  3. has your rad and heater core been flushed recently? If the heater core is obstructed flow will be reduced and the heater will run cool. Feel the rad and heater hoses when your engine is warm; if heater hose is much cooler than rad hose with heater temp set to max, then core flow is likely restricted, or valve is not moving much from the shut position.
  4. is you vacuum tank properly connected and are there no leaks in the vacuum piping? The tank is in the driver side rear wheel well below the trunk deck on a convertible, and in the passenger side front fender area on the other cars. It's a white bottle with one or two hoses connected to it. If not properly on, your vacuum operated heater flaps won't move. Does the air distribution knob make sucking or hissing noises when you set it to different positions? If not, check the tank connections, look for vacuum line leaks, then suspect the vacuum valve behind the distribution knob.
  5. Lastly, the shaft connecting the temp control knob to the valve behind it may not be properly in place. This can be inspected, and adjusted if necessary, from the speaker/vent cutout on top of the dash. Make sure you re-connect the black flex hose to the air vent tube, or you'll get no defrosting afterwards!
  6. remember, the centre vents always blow cold air; a brilliant idea from Saab so the driver (and passenger) can get fresh air in the face and stay awake while the rest of the driver, passenger and car is toasty!
  7. see http://townsendimports.com/Web/cooling_system_folder/thermostatreplacement.htm for flushing and stat replacement info

Posted on Mar 01, 2010

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