got a bit of a strange problem with my stocck 1.5 civic dx...

the car stumbles/hesitates at lower rpm when there is load on the engine. for example, rev through first with problem, shift into 2nd and while the revs climb, it will stumble a few times till i hit higher rpms then be fiine until i shift into 3rd and get the same thing.

hard part to diagnose is that this doesnt happen all the time, but it does seem to happen when its real humid or moist out...weird.

i replaced the plugs, wires, cap/rotor less than 5 months ago and made sure none of the wires are touching. i have a feeling itrs something electrical, but dont know where to begin.

any ideas?

thanks

 

ya i think electrical is the right direction...i would try a known good ecu and try that just cuz its pretty common problem in humid areas

 

i did not know that! are those known to be effected by humidity? i've had the car for 5 years and its the first time i've noticed this. is this something that happens over time?

thanks