Code 311, low rpm bogging?
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Code 311, low rpm bogging?
In my 95 F150 5.0 E4OD, I get a low rpm (like from a stop) bogging. Also when I get the engine in the upper rpms either by holding the shifter in a lower gear or if it's just about to upshift (and the rpms are on the high end) its got really good, smooth acceleration. If I'm just cruising at 1,100-1,300 rpms at say 40mph, I can feed in the gas pedal and nothing really happens until the pedal is depressed enough to downshift and then like I said earlier, it really goes (for a 5.0)
I've done a full tune up, Seafoamed it and did a KOER and KOEO test and all I got was a 311. The 311 was found with the KOEO test only.
I don't want to throw money at it but could the FPR be doing this with no codes besides the 311?
I had a vacuum leak but I fixed it today and it didn't help at all.
EDIT: Whenever I feel like a little hard-driving and I really "get on it" a few times, at the next stop, I hardly have any acceleration at all. Feels like a flooding carb until again, I eventually get in the higher rpms and it seems to clear out and the acceleration comes back.
I've done a full tune up, Seafoamed it and did a KOER and KOEO test and all I got was a 311. The 311 was found with the KOEO test only.
I don't want to throw money at it but could the FPR be doing this with no codes besides the 311?
I had a vacuum leak but I fixed it today and it didn't help at all.
EDIT: Whenever I feel like a little hard-driving and I really "get on it" a few times, at the next stop, I hardly have any acceleration at all. Feels like a flooding carb until again, I eventually get in the higher rpms and it seems to clear out and the acceleration comes back.
Elder User
Joined: Jan 2006
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whens the last time you replaced the fuel filter?
whats you fuel pressure at the rails?
Not a fan of seafoam. Try Neutra next time. Seafoam is twice as expensive but Neutra has more cleaning agents. Pint in the tank and pint in the crankcase.
whats you fuel pressure at the rails?
Not a fan of seafoam. Try Neutra next time. Seafoam is twice as expensive but Neutra has more cleaning agents. Pint in the tank and pint in the crankcase.
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