Hi, I have a 95 850 Turno Wagon and over the summer I got stuck in a traffic jam and my temp reading was saing hi.When this occured, the car was taking long to go into 4th if at all.I took it to a dealership and they found nothing wrong.Any ideas as to what is wrong?

 

Check the tranny fluid level and quality (color/smell). I'm assuming that the dealer checked for codes, but check for codes anyways. With any luck you might only need to replace the fluid as it breaks down at high temperatures.

 

Coolant filled? Perhaps the cooling system.

The a/c might run it up also. My dad had a 99' 626 and it had an overheating issue when you ran the a/c. He ended up disconnecting the a/c and the car turned out to be a total POS.

 

Greetings from Chicagoland.

I agree with Mr. info2x. The transmission fluid has probably degraded. Somewhere on this board I thought I saw a procedure for flushing the fluid and it seemed easy enough for anyone to do. A degraded transmission fluid generally has burnt smell and discoloration.

Turbo-charged engines require different care than NA engines. Here are some hints (my prejudice included):

1. Coolant must be in good condition (less than 3 years old, depending on the type) and of sufficient quantity.

2. Engine oil must be of high quality and must not be too thin (I avoid 5W-30 for turbo-charged engines). Synthetic oil is not mandatory but is highly recommended to protect turbine bearing (it turns as fast as 160,000 RPM). Change oil every 3,000 miles (4,800 km) or every 4-6 months. I use synthetic blend, but after I repair oil leak I'll probably switch to full synthetic.

3. In summer if you get stuck in a traffic and the temp gauge wants to say hi, turn the heater on at hottest setting at full blast. This lowers the coolant temp by about 5 degrees Celsius, while the driver may suffer additional heat.

4. Warm-up & Cool-down. After start up, I usually let the engine idle for about 2-3 minutes in summer, 4-5 minutes in winter. This is still up to argument and no one has definite answer as to if it's necessary or just a waste of fuel. I do this only because I feel comfortable doing so. Cool down is important, though. After high-speed or hard driving, you might want to let the engine idle for a few minutes to cool the turbine bearing. In some countries, there are devices called "turbo-timer". They keep the engine idling even after you shut down and remove the key.

5. Keep the intercooler/radiator/AC condenser free of debris.

6. TLC.

Good luck,


JPN