RPM goes up then down when slowing down

SOURCE: How do I reset the check engine light for a 2006 scion tc?

YOU CAN GO TO ANY ADVANDED AUTO PARTS AND THEY CAN HOOK UP A OBD2 SCANNER, WE THEY DO ASK THEM TO RESET THE LIGHT FOR YOU.. THIS IS A FREE SERVICE TO THE PUBLIC..GOOD LUCK KEITH..

SOURCE: engine seized from hydrolock on 07 scion tc

remove the sparkplug all 4 then crank the eng over so it spits out the water it sucked in after that reinstall the plugs and try starting it hopefully it didnt bend valves

SOURCE: I have a 2006 Scion TC and the brake light for the

i had this same problem -- took it to a mechanic who found that the brake pads were worn out.

SOURCE: i have 2006 scion xb and when driving the rpm

3500 is about normal for an xb at 65 mph. My previous ride was a pickup and rolled at about 2000-2500 on the highway. But the XB's engine is way more "tightly wound". Your rpm gage should run at about half of of your speed...ie: 70 mph will be about 35 (3500) rpm, 80 mph will be about 40 (4000) rpm. Freaked me out when I first got the thing, but after researching it Ive found out that with a stock engine it actually runs more efficient at the higher RPM's. The 06 boxes won't redline until 6000 rpm, so unless you are driving 120 on a frequent basis you're good. You can probably have it modified to run lower, but you will lose the awesome gas mileage and overall it is not going to improve the way it runs, and would have no benefit............

SOURCE: where is the oil filter

SHOULD BE UNDER CAR NEAR THE OIL PAN.