idle surge between 1.5k-2k '92 civic
 

jdm d15b - the car only surges when the throttle is cracked not when pumped, only when trying to give it a little gas.

-iac is bypassed, sensor plugged in. does not affect idle, only on initial start when cold. throws cel #14 - iac
-no vaccum leaks
-tps is good, checked with multimeter and adjusted to specs

i do not think there is a fitv sensor, i have an extra plug that looks like the iac one. i need help, cannot think of anything else to check for. someone has to know whats going on.

-Dustin

Re: idle surge between 1.5k-2k '92 civic
 

Check your O2 sensor i had the same problem and thats what it was.

Re: idle surge between 1.5k-2k '92 civic
 

checked o2 and it needed to be replaced. bought a new one, but the problem is still there. bump........need this resolved, the car feels like its going to fall apart (shaking and vibrating) when it hits this rpm range.

Re: idle surge between 1.5k-2k '92 civic
 

bump...........help

Re: idle surge between 1.5k-2k '92 civic
 

limp mode??? have you flashed your ecu lately?


either disconnect the negative on the battery, or take out the hazzard fuse from under the hood?