cmvdias

I’m having problems starting my car ” Honda eg9 b16a2 “ in the morning when i start the car the cold start push the idle to 1300 rpm but the problem is if i press the gas pedal the rev comes down to 600 rpm and eventually the car stops what could cause this,I have already checked the IACV valve and it’s clean replaced the manifold air temperature sensor i was wondering if it could be the 02 sensor? Or the PCV valve?

cmvdias

please help does anyone ad this problem

CNano8

The only thing I can think of would be the idle air control valve but you said it was clean.. hmm maybe the unit is still faulty even though its clean? Do you know someone with the same motor that you can swap it with just to make sure?

cmvdias

thaks for you reply,but i tried that and didnt work
i'm running out of ideas

dadrought6

is your ecu chipped?

cmvdias

yeap,but im using without the chip

Joeski99Si

I had this problem also . . After my ECU was chipped

cmvdias

yeap i tried a stock ecu and it's the same,the only things that i have to check it's the pcv valve ,o2 sensor or just needs to be tuned or maybe the coolant temp sensor...

biostarled

check your main relay. pull it out and pop off the cover and check the soldered connections if the soldered joints are cracking resolder it and you shouldn't have that problem anymore

cmvdias

Sorry can you explain me witch relay are you talking about , many thanks

biostarled

the main engine relay on the fuse box under the dash.

cmvdias

thanks mate i will try that first sing in the morning

biostarled

yeah no problem. lmk if you need any more advice. taht worked in m ycar so it should work in yours