What is the name of the tool I would use to check the knock sensor stuff? I thought that since I had some broken valve springs, my code 43 was caused by this. But after reading this, apparently it wasn't because of the valve springs.

 

Use a voltage meter, you can get a decent one for around $25-35 at sears.

 

"Multi-meter" You need to check both ohms and DC volts.

 

I guess I'll be getting a multi-meter. How much do they cost and where can I buy one?