Misfire / Bog under load
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6th Gear
Joined: May 2025
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Misfire / Bog under load
Let me give some info about the car first…it’s a manual ‘99 with 160k. It has an idle surge when it’s cold, it’ll surge between 750-1200rpm (rough estimate). When it’s warm it doesn’t surge. Recently it started bogging / missing when under load, specifically WOT (wide open throttle). Check engine light is on only for long tubes (o2). Once it bogs / misses for a few seconds it will stop and continue to rev all the way up and keep pulling but there’s a good amount of time where it’s bogging. Does anyone have experience with this issue? I uploaded a short video for reference.
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Joined: Sep 2013
Posts: 15,607
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From: Cape Coral, Florida
Unfortunately many things can cause this so if you don’t have a factory level scan tool to see if there are any misfires and able to interpret live data seek out a diagnostic shop in your area…not a “grease monkey” repair shop or a dealership…they only know how to change parts…a video is of no use to diagnose this.
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