"bogs down" wen cold
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New User
Joined: Aug 2003
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From: CT
"bogs down" wen cold
I have a '97 F250HD PSD, and shortly after cold starts, when I begin to accelerate from a stopped position, the truck suddenly "bogs down". When i press the accelerator down farther, it takes off more or less as expected. After driving for a while and warming up, it seems to stop. Is this normal? Someone suggested that the sudden lurch after accelerating is the turbo kicking in, but I don't know....
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Joined: Apr 2003
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From: Northern IL
I agree its your EBPV working. Its purpose in life is to help the engine warm up in cold weather. The 94.5-97 do not idle up in cold weather unless you install a AIC. You should notice a slight shhhhhh sound when it bogs down. Also, a couple of minutes after you start the engine while waiting for the engine to warm up, if you bring the RPM's up to 1000 or so you will hear the shhhhh sound. If you have straight pipe exhaust or a open element air filter the sound is much more pronounced.
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From: CT
My truck doesn't have the high idle feature, as Ggg6 pointed out. I really haven't listened for a "shhhhh" sound, and have only the stock exhaust. I will listen for it next time, though. As long as this sounds normal, I can deal with it. It does go away after ample warm up, which usually requires me to drive a little while. At first I was thinking worst case scenarios- bad tranny or injectors or whatever. Thanks for the replies.
By the way, can anyone steer me in the right direction...I'd like to install some type of high idle chip or switch to raise the RPM's a few hundred during cold weather idleing.
By the way, can anyone steer me in the right direction...I'd like to install some type of high idle chip or switch to raise the RPM's a few hundred during cold weather idleing.
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Joined: Apr 2003
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From: Northern IL
Some people have had some issues, like the high idle going too high, or coming on at an inopportune time, because these are "fly by wire" vehicles. I use a wood stick cut to just the right length for about 1000rpm. it does not allow the idle to creep up, nor does it come on at the wrong time. With stock exhaust it can be hard to hear the Shhh. Try doing the 1000rpm thing while sitting wiating for the engine to warm up, like I said above. Yes there are chips that can be programmed for a cold weather high idle.
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