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Old 06-15-2009, 01:51 PM
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Question truck wants to run

my truck is surging sometimes right off the line and sometimes while accelerating down the road. it only last for around a second usually by then i have moved the throttle and it goes away. my wife says the truck just wants to get up and run, 7.3 early 99, 260.000 motor is stock except for a SCT tuner with canned tunes set on street. any ideas?
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Old 06-15-2009, 01:55 PM
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First idea is to get rid of the SCT, its not good for the 7.3
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Old 06-15-2009, 01:59 PM
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Quote:
Originally Posted by Tyler View Post
First idea is to get rid of the SCT, its not good for the 7.3
Tyler is right and wrong here. Canned SCT tunes suck on the 7.3. Custom SCT tunes however are fine. However unless the problem goes away when you are back to stock I highly doubt the SCT has anything to do with it.

Need to have a scan tool and see data to diagnose this. It could be anything from a bad TPS to many other things
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Old 07-08-2009, 10:35 AM
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when was the last oil change?

Did you have the CPS recall done?
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Old 07-08-2009, 10:46 AM
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I'm thinking he might have a sticking injector. If the injector is staying open longer spraying more wouldn't that make it romp and surge a little? I'm still learning too but that makes sence to me. 260k on stock injectors sounds about right.
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