Loud & piercing whinning engine noise

Are you sure it is not the transmission pump or torque converter

No one can guess at noises-need to have the vehicle to check
that out

Have a dealer weigh in- IF- it is still in warranty

When you say loud & the vehicle is only 3 to 4 years old
I would stop using it in a hurry until that issue is solved

Is the car a convertible? If so the window controls operate through the convertible top computer.
By ignition switch module are you talking about the part under the lock cylinder? They do fail a lot.
What do you mean by the relays are intact? Have you checked for power at each fuse with the key on?

So someone told you it was the temp sensor, but didnt check it, or know where it was located? 900 what? coupe?convertible? Hatchback? s? se?? engine size?? on the head, usually near the thermostat

???

Did you ever fix this problem or find a solution? I have the SAME issue in a non-convertible (heater, windows - and horn & wipers).

Please email me if you found a solution! josh at boostvt dot c0m

Windows on your car are controlled by the convertible top computer. You will have to have someone check the car with the factory tool. The computer is in the trunk on the left side.

Sounds like you may have broken so-called window glide rollers (aka window regulator bushings) which are the green plastic and metal clips that secure the window glass to the scissors lifts. Each window has two.
Window regulator bushings:

Part no. 4493433, $7.14 USD, at saabsite:




At eeuroparts.com
Part Code: 4493433
Part Name: Window Roller
Part Brand: Genuine Saab
Part Cost: $5.92 USD
Part Description: Window roller for any 94-98 900, 9-3 99-02 (and 03 convert), 9-5 all. 2 per window regulator.


Or aftermarket (Scantech)

Part Code: 4493433A
Part Name: Window Roller
Part Brand: ScanTech
Part Cost: $2.99 USD
Part Description: Window roller for any 94-98 900, 9-3 99-02 (and 03 convert), 9-5 all. 2 per window regulator.

Remove the inside door panel to expose them and replace any that are broken.

check to make sure path to storage is clear sounds like their is stuff in trunk blocking it.

dirt in tank and float is loose in tank - was it removed in past- sounds like tank has been replaced

"check latches" comes across my screen when trying to lower my convertible top on my Saab 900