General engine questions/issues that aren't specific to the other categories
By HKS_JUN
#130067 having a issue with my car hope some one can help me.

when the car is started the idle is fine 800rpm is where it sits however when i rev the car and let go off the accel padel the revs drop like its gonna switch off below 300rpm and sometimes its fine

anyone no what could be causing this

thanks
By thirdson
#130239 had this problem before..is your throttle cable sitting right?(throttle cable and throttle cable bracket) make sure the throttle cable is straight..also maybe clean IACV, Check TPS (i doubt TPS had anything to do with it but yeah...), check air filter, check butterfly on the TB (might close right up when you release accel), coolant and clean your throttle body..

i did all those when i had the same problem so dont know which one fixed it..
By HKS_JUN
#130641
thirdson wrote:had this problem before..is your throttle cable sitting right?(throttle cable and throttle cable bracket) make sure the throttle cable is straight..also maybe clean IACV, Check TPS (i doubt TPS had anything to do with it but yeah...), check air filter, check butterfly on the TB (might close right up when you release accel), coolant and clean your throttle body..

i did all those when i had the same problem so dont know which one fixed it..


thank will try this in the morning.

just to say i have just done the conversion its a b18c4 with a p28 ecu with b18c1 base map with the knock sensor disabled.