Hi I am new here i need help please!!I have 1989 accord lxi my car runs very rich.Idle always high and some times goes up and down when I stop the car dosent start after short run but I remove iacv valve plug couple times car starts again.Mechanic coulndt find the problem he only told me that my ecu gives a wrong signal to iacv valve he want me to replace the ecu .It is very expencive and he is not hundered percent sure so I dont want to buy a new one.I have check the ecu signals it does not give any false code acts like every thing is ok.I ve already bougth 2 o2 sensors iavc valve replaced fast idle valve replace trotel body cleaned up fuel filter replaced and still my car is not fixed please help what is wrong with my car I apriciate for any help thank you
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