Car dies on bumps and when braking

Feckl

New Member
Jul 14, 2025
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Indiana
Long time lurker first time poster. I need some help with my 02 GT!

I started having this strange problem where the car will nearly or fully die when I run over larger bumps in the road or brake with any sort of urgency. If the cars still in gear I get some bucking and a big backfire. Car starts right back up and theres no obvious codes that could be the issue. Anyone have any ideas?
 
Manual or auto?

Start by checking grounds (due to the bump comment). If a manual check idle speed or just a simple dirty throttle body and/or idle air motor. Sounds like it's not recovering quick enough and the hard braking puts pressure on the power steering pump which then bogs engine (yeah it's a stretch but I've had one do this before).