1994 Volvo 850 Turbo Wagon

My 1994 Volvo 850 Turbo Wagon (197,200 miles) is in the shop due to a faulty knock sensor and worn out ignition switch. The mechanic told me that if the knock sensor is not replaced it can cause damage to the cam shaft. Another mechanic told me that a faulty knock sensor is not a problem - that I could drive the car for a long time before it would need to be replaced. I’d like to know who is correct, since they are conflicting stories! Thanks!

Both. The knock sensor is not all that important as long as you feed that beat high test gas. If you go back to regular for a tank, you could do it damage.

Remember you will be paying more for the high test and unless you like and use the extra power, you will be wasting money on fuel that you could have paid to get it fixed.

Okay. Thanks for the information!