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Old 07-17-2014, 05:34 PM
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Anyone know what part this is?

So after doing a transmission flush I pulled my 04 f350 into the driveway to check the levels. After I checked the levels, the truck wouldn't start again and this part in the picture (shaped like a small L) made a loud vibration sound that wouldn't stop when the key was in the accessory position. Any ideas?
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Anyone know what part this is?-1405647269478.jpg  
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Old 07-17-2014, 05:41 PM
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When you say won't start to you mean it would crank but not start, or it wouldn't crank at all? The item in your pic is the vacuum pump and wouldn't have anything to do with not starting. Vacuum is only used to control the internal HVAC controls, and the automatic 4wd hubs if equipped. If it's a crank but no start condition then the recent trans service has nothing to do with it. If you have a no crank condition then it MIGHT have something to do with the trans and not seeing neutral, causing a no crank issue. Doubt this is your problem though. My guess is it's cranking fine but won't fire up. If so then it could be quite a few things. Do you have access to a scan tool or at least a code reader?
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Old 07-17-2014, 05:49 PM
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Quote:
Originally Posted by justinmix View Post
When you say won't start to you mean it would crank but not start, or it wouldn't crank at all? The item in your pic is the vacuum pump and wouldn't have anything to do with not starting. Vacuum is only used to control the internal HVAC controls, and the automatic 4wd hubs if equipped. If it's a crank but no start condition then the recent trans service has nothing to do with it. If you have a no crank condition then it MIGHT have something to do with the trans and not seeing neutral, causing a no crank issue. Doubt this is your problem though. My guess is it's cranking fine but won't fire up. If so then it could be quite a few things. Do you have access to a scan tool or at least a code reader?
Thanks. Yes, it cranks no problem but nothing more. The code I have ob my Insight is P0603. But, could that be caused by my running tunes?
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Old 07-17-2014, 05:57 PM
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Yes it could, and shouldn't be causing the no start. Can you monitor ICP pressure during cranking? You need at least 500psi to start. Are the batteries in good shape and it's cranking strong? I'm guessing it's a totally unrelated issue and just something else causing the no start.
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Old 07-17-2014, 06:14 PM
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The batteries are kind of old so I put them on a charger and then cycled through all the hard before cranking it over and it started. Hopefully, it was just those batteries. They were both reading 12.5 before charging.
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Old 07-17-2014, 06:17 PM
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Low voltage can cause a no start issue, Even if it's still cranking semi decent. The PCM needs 9.5 volts to stay powered up, and if it's drawing to much cranking it won't power up the PCM enough to fire. I'd have the batteries load tested and make sure the terminals are clean and tight.
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Old 07-17-2014, 06:50 PM
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Thanks for the quick help.
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