- Misfire between 1000 and 2000 rpm. Some car manufacturers install a rev limit that prevents you from over-revving for too long. A couple other comments - cruising between 2000-2500 rpm (really about any gear), the motor acts like it is running on one cylinder. At this point the rpm surging between ~ 1000-2000 stopped and went low (deceleration). Jan 20, 2018 · On my 2012 Avalanche with 5. This may be the result of a malfunctioning timing component, a stretched timing belt or chain, or a failing camshaft or crankshaft position sensor. Feb 22, 2023 · An engine misfire can also cause significant vibration at low RPM. Coils are old, but there are no missfires diring the knock. I've read a lot of topics on this and everything ranges from misfire, to possibly and oil pump problem, or fuel injector issues. Apr 30, 2006 · OK, here is the problem—At anything over 2200 RPM’s it runs great. I responded with lots more throttle but it continued to slow. al4t vk6sjh nfx kykvtxd qksc 3c v0fh rzkam ztg l75b4