Reflash w/ Tuner?
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Posting Guru
Joined: Jun 2009
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From: Anderson, SC
Reflash w/ Tuner?
My '03 has been running extra rough during the winter season on cold starts....super rough idling until it gets warmed up. I want to try and do the reflash before I look into it being the injectors, but I just read another thread where Bismic said that some people had problems with their trucks after reflashing with a tuner, however he did say that most, if not all of them related their problems to not returning the truck to stock before having it reflashed. Does anyone thing I will have any problems? Does it change the truck's strategy or anything like that?
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Joined: Oct 2005
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From: Plano TX and Brentwood TN
My '03 has been running extra rough during the winter season on cold starts....super rough idling until it gets warmed up. I want to try and do the reflash before I look into it being the injectors, but I just read another thread where Bismic said that some people had problems with their trucks after reflashing with a tuner, however he did say that most, if not all of them related their problems to not returning the truck to stock before having it reflashed. Does anyone thing I will have any problems? Does it change the truck's strategy or anything like that?
I would look at the FICM first, before going to the injectors. However, if it is the FICM then they will reflash as it does not come programmed. That will change your strategy.
Do you have any specialty scan tool(not just your tuner/scan tool, but something like AE?) as you might have some type of code like Inj. Circuit low/high or FICM performance code or something like that. If you get codes that are related to the FICM or are Injector codes but look electrical in nature then I would think FICM or wiring would be an issue.
Thread Starter
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Posting Guru
Joined: Jun 2009
Posts: 1,373
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From: Anderson, SC
I would look at the FICM first, before going to the injectors. However, if it is the FICM then they will reflash as it does not come programmed. That will change your strategy.
Do you have any specialty scan tool(not just your tuner/scan tool, but something like AE?) as you might have some type of code like Inj. Circuit low/high or FICM performance code or something like that. If you get codes that are related to the FICM or are Injector codes but look electrical in nature then I would think FICM or wiring would be an issue.
Do you have any specialty scan tool(not just your tuner/scan tool, but something like AE?) as you might have some type of code like Inj. Circuit low/high or FICM performance code or something like that. If you get codes that are related to the FICM or are Injector codes but look electrical in nature then I would think FICM or wiring would be an issue.
