Odd throttle response when cold.... Maybe.
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More Turbo
Joined: Sep 2016
Posts: 580
Likes: 4
From: Michigan
Odd throttle response when cold.... Maybe.
Truck is an 00 7.3. For both cases. My boss and I have both recently experienced this with our trucks. I'm not sure if I'll explain it right but I'll give it a go. It only happens when the truck is cold. I do warm my truck up before I move it but sometimes will give it a little idle time and then once it goes to high idle I'll slowly move it out my driveway and down the road. We live on dirt roads. It seems that when I do this I'll be just pulling out of the driveway, so I'm at about 1000-1200 rpm I think, and lightly on the throttle then it's like the computer or something tells everything to move faster. You could probably explain it as kind of a jump. The truck doesn't move any faster but it goes from quiet to loud. Like all the injectors just started firing harder as they do with acceleration. Is that normal or do I have an issue? The truck behaves well any other time. I thought maybe it had to do with the cold or possibly where I was in the throttle when moving it out the driveway slowly.
Mountain Pass
Joined: Dec 2013
Posts: 234
Likes: 0
Sounds like the EBPV opening up now that you are under load and higher rpm, thus higher temp. Do a search about the EBPV if you're not familiar. In a nutshell, it partially closes the exhaust to make the truck warm up quicker.
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