460 efi engine bogs under load
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Junior User
Joined: Aug 2009
Posts: 69
Likes: 0
From: West Fargo, ND
Just thought I would update this thread. The truck is mostly fixed.
I brought it into a friend's shop and he replied ghe Ecu and it finally would run but miss under load. So he replaced the coil and it's resistor and it runs 90% atm. It still has a slight miss under load every once in a while. So I'm still stumped haha. But at leist it's deiveable.
I brought it into a friend's shop and he replied ghe Ecu and it finally would run but miss under load. So he replaced the coil and it's resistor and it runs 90% atm. It still has a slight miss under load every once in a while. So I'm still stumped haha. But at leist it's deiveable.
Laughing Gas
Joined: Mar 2011
Posts: 811
Likes: 1
From: West Central Southern MN
when reving it the gauge seemed to hold pressure ( I run 50 lbs as I have cam, headers, exhaust, etc.) So with all that said is there is someone that could point me in the right direction it would be most appreciated as my next step is to start testing every sensor and the fuel pump, and checking the vac leaks.
There are many EFI truck cams from comp. We would need to know which one you installed to look up the specs, and to give you a recommendation on how to run it.
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Thread Starter
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Junior User
Joined: Aug 2009
Posts: 69
Likes: 0
From: West Fargo, ND
I really hope you checked the fuel pump sometime over the last 4 months. Also, I really hope you have a wideband O2, with at the very least a gauge, to tune with. Otherwise you threw your money away on that AFPR. There is a very good chance that you are too high on the AFPR, or your fuel pump is shot, and/or just can't keep up.
There are many EFI truck cams from comp. We would need to know which one you installed to look up the specs, and to give you a recommendation on how to run it.
Sent from my iPad using IB AutoGroup
There are many EFI truck cams from comp. We would need to know which one you installed to look up the specs, and to give you a recommendation on how to run it.
Sent from my iPad using IB AutoGroup
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