Idle hunt on PFC when fuel is low?
11-06-21, 07:46 PM
#1
Idle hunt on PFC when fuel is low?
Title. I've noticed my car will often idle hunt when coming to a stop when it is in neutral. Seems to only happen when fuel level is less than 1/4 a tank. Fuel pump, sock & filter are all brand new.
Edit: Car is also a JDM model, Series 6.
Edit: Car is also a JDM model, Series 6.
Last edited by SwappedNA; 11-06-21 at 09:01 PM.
11-07-21, 08:32 PM
#2
Rotary Enthusiast
O ring on fuel pump is possible. Not sealing properly, pinched, or something like that allowing air in?
11-08-21, 12:07 AM
#3
What's odd is, there was a plastic o ring looking piece in there that was cracked and the car would hesitate severely at/below 1/4 tank to the point where you could barely maintain highway speeds. I fixed that with a replacement Nipon Denso fuel pump kit, but now when the fuel is low it will sometimes idle hunt. Oddly enough, I drove it tonight to go and get gas, and it didn't hunt at all, even with the fuel being as low as it is. I have no idea what map the car is running, it came with the PFC from Japan, so for all I know it could be a base map, but I have no way to tell.
11-08-21, 05:33 AM
#4
Rotary Enthusiast
That map will not make a difference with fuel level. I ended up bypassing my whole o-ring set up and went with the hose. I had other issues though.
This issue is cold and hot?
This issue is cold and hot?
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