I have an 03 civic which has recently exhibiting rather inconvenient power loss during warm up.
It seems to be worse when it’s below 35 F out… The car starts just fine and I can generally drive several blocks just fine as well. Then for no apparent reason, the engine loses basically all power. It doesn’t stall, but there is basically no power. When I pull over, the idle falls to ~400-500 RPM. Pumping the gas increases the RPM slightly, but again, there is no power. Then as quickly as it began, the problem disappears; the engine returns to normal idle/power. This never reoccurs if the engine is kept warm. However, if the car sits for a few hours, the problem happens again. I would estimate the power loss occurs for ~30 seconds. The check engine light does not turn on before, during or after these episodes. It’s almost like the choke is sticking… Any ideas?
Thanks in advance for any help!