My truck has the hiccups under hard accelleration and heavy engine load, usually going up hill at 75 mph then accellerating where boost goes to 12-15lbs.
I replaced the fuel filter and the lift pump. OPS is less than 6 months old.
When it hiccups, I get a code P0236. It's says air and fuel metering on the scanner. Is this a simple over-boost code?
I have 2 other codes: P0711 and U3900
P0711 is tranny temp sensor according to my scanner IIRC. What does that mean?
U 3900 is unknown to my scanner.
Can anyone offer any insight to these trouble codes or the hiccups?
P0236 is low boost according to westers and ssdiesel. That's weird because it only happens at 12lbs+ boost.
It's hard to say what the tranny temp is when the DTC is recorded. It doesn't turn on the SES light. But it's there every time I plug into the scanner. Even when the tranny hasn't even gotten warm.
I know. I'm on my second reflash from them. First one was leaving me or my wife stranded when it would decide to shut off. This one trips DTCs and now the truck has the hiccups....
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