KRock459

I have an interesting problem, my vehicle pulses when I am driving at a constant speed with a constant throttle position. Under acceleration things run smooth, and idle is smooth as well, no vaccuum leaks, and it only occurs when the weather gets warmer. Engine is a B16, it runs very strong, economy is great (32-36 MPG), but this problem is starting to worry me. The engine surge makes me think it is running lean, but I would assume it would be more of an issue when it is cold (denser air) vs warm. Engine temp doesnt seem to play as much of a role.



Bad sensor? plug wire/plug? dizzy? any imput would be appreciated

Kirk R

josh352727

I had that prob. and it turned out to be throttle position sensor (b18c1).