Hmmmm is the service engine light coming on? If so, yo should get it scanned and see what comes up. AutoZone, Advance Auto, and O'Reilly Auto all have a scanner and will scan your car for free.
If the light isn't on, then maybe we should check and see if the catalytic converter is clogged. If so, it would be creating too much back pressure through the exhaust, not allowing the engine to breathe properly, which often creates hesitation and bogging down.
Here's a how-to guide on checking the cat: https://www.2carpros.com/articles/how-to-test-a-catalytic-converter
The process I've always used is somewhat simplified. Basically, I just take the oxygen sensor that is between the engine and the catalytic converter out, and take teh car for a drive. This helps reduce back pressure that a clogged cat would create. If it feels better, then the cat needs to be replaced. If not, then put the sensor back on and we'll move on to checking other things, like fuel pressure.
Sunday, February 11th, 2018 AT 4:59 AM