Slight surge while cruising - Ford Powerstroke Diesel Forum
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Old 01-27-2014, 03:03 PM
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Slight surge while cruising

I just got my injectors done last week. It helped the cold starts. But I still get some surging. I cleaned the turbo on the weekend with no change. It seems to do it under slight load like at cruising speed. I have cleaned the egr valve. new filters. Ficm is good. Replaced the ebp sensor.
A friend of mine has a OTC Genesis
My question is what should I be looking for? Keep in mind I have no idea what "good values" are. If there is a range that something should be within that would be very useful to know as we'll
Thanks in advance



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Old 01-27-2014, 07:36 PM
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Forgot some details. It's a 2005 f250 74000 miles
I've been chasing the surging for a while it seems to happen cold and hot. I can hear the tone of the turbo change like it's hunting and if I'm accelerating the Rpms seem to go up in steps. I'll try to take a video tonight on my way home. Not sure if it can be heard.



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Old 01-27-2014, 09:01 PM
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videos arent very good... cant hear the turbo at all but you can kinda hear the rpm stepping
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Old 01-28-2014, 05:49 PM
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Are there any sensors I should look at specifically?


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Old 01-28-2014, 06:08 PM
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As far as a sensor values list there is a member named bismic who has produced a rather extensive list gleaned from varieous sources run a search for his post, rather long several pages of post but worth every byte.

This will be someting that you will need to data log to catch it in the act so to speak.
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Old 01-28-2014, 06:11 PM
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Ok thanks I'll try to find it. Thanks


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Old 01-28-2014, 07:20 PM
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Maybe the ficm wire harness? Mine was bad and was doing the similar thing. Ford has a updated one now that is re-routed so it doesn't rub the wires through. Also the female ends that go on the injector harness stretches out over time from heating and cooling down and being disconnected many times.


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Old 01-29-2014, 03:26 PM
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I looked for his thread and didn't find it. Do you know the title or something I can search that would lead me to it? Was it an old thread? The results only went back to 2012
Thanks


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