2005 4.7 sputters, hesitates, and bucks under accelaration

[HanYolo]

My 2005 1500 4.7 is missing (stuttering, sputtering, bucking, etc) at half open throttle and 20 mph or more. At wide open throttle and idle it’s fine. It only acts up at about half throttle and at speed. No codes are being thrown.

I’m thinking this order:
1. Plugs and clean throttle bottle body
2. Fuel filter
3. Fuel pump

Thoughts? Thanks. Brian

 

[Tsmith646]

Try replacing the cam shaft sensor, I think that year has one I know my 06 does and sounds exactly like what it does when the thing goes out.


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[ccushman]

My 2005 1500 4.7 is missing (stuttering, sputtering, bucking, etc) at half open throttle and 20 mph or more. At wide open throttle and idle it’s fine. It only acts up at about half throttle and at speed. No codes are being thrown.

I’m thinking this order:
1. Plugs and clean throttle bottle body
2. Fuel filter
3. Fuel pump

Thoughts? Thanks. Brian

May i ask what the final solution was as im facing exact problem now

 

[Bills86e]

My best guess is broken valve spring. You must do a compression test to ascertain which cylinder it broke in.

Bills86e

 

[Bills86e]

Do it before it drops the metal valve seat. Use your bore scope into the bad cylinder, look for metal bits. If so send the head to machine shop if applicable.

Bills86e

 

[LoneWolf3574]

My 2005 1500 4.7 is missing (stuttering, sputtering, bucking, etc) at half open throttle and 20 mph or more. At wide open throttle and idle it’s fine. It only acts up at about half throttle and at speed. No codes are being thrown.

I’m thinking this order:
1. Plugs and clean throttle bottle body
2. Fuel filter
3. Fuel pump

Thoughts? Thanks. Brian

Any codes?