5.4 running very shakey HELP!!!
#1
5.4 running very shakey HELP!!!
the other day i was driveing down the road with my buddie who is supposed to be mechanicaly inclined....well my truck was running really shakey and when i gave it a little gas ( not flooring it) it got WAY worse..
so he told me i needed plugs well we changed the plugs and yes they were very nasty... but that was not the problem.. i figured one of the coils went out and i didnt feel like messing with it anymore so i took it to the mechanic and he did find 2 bad coils well took it home today and it started again and i knowticed a real decrease in power like befor!... could my coils just be going out 1 after another? or could it be somthing else i know these things need to be changed eventually but has anyone ever experienced this and it not be the coils?
so he told me i needed plugs well we changed the plugs and yes they were very nasty... but that was not the problem.. i figured one of the coils went out and i didnt feel like messing with it anymore so i took it to the mechanic and he did find 2 bad coils well took it home today and it started again and i knowticed a real decrease in power like befor!... could my coils just be going out 1 after another? or could it be somthing else i know these things need to be changed eventually but has anyone ever experienced this and it not be the coils?
#2
#6
sounds like a cylinder is misfiring....my guess is like stated. I had a similar issue recently and changed my COPS...solved my problem until a week later when #7 injector stuck open. If it sticks open though you will def know it....DONT restart the engine after you shut if off or you risk hydrolocking the motor.
Good luck with whatever you come up with.
Good luck with whatever you come up with.
#7
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#8
im having the same problem..
05 f150 lariat 4x4 5.4 173k miles
it drives fine no roughness in 1st,2nd,3rd gear but after it changes in 4th gear at low rpm, the engine gets rough and jerks..
i changed the spark plugs, went away for a lil while then came back the issue.
just recently got code p2104 so i replaced the throttle position sensor, cleaned the throttle body, the MAF sensor and put everything back. Did road test, same problem still persists.
Code went away, i dont get any codes now but its still doing the same thing. Should i go ahead and replace #5 injector? are these symptoms of a failed injector?
btw i just had my transmission rebuilt since it finally died after 173k miles..
thanks guys..
05 f150 lariat 4x4 5.4 173k miles
it drives fine no roughness in 1st,2nd,3rd gear but after it changes in 4th gear at low rpm, the engine gets rough and jerks..
i changed the spark plugs, went away for a lil while then came back the issue.
just recently got code p2104 so i replaced the throttle position sensor, cleaned the throttle body, the MAF sensor and put everything back. Did road test, same problem still persists.
Code went away, i dont get any codes now but its still doing the same thing. Should i go ahead and replace #5 injector? are these symptoms of a failed injector?
btw i just had my transmission rebuilt since it finally died after 173k miles..
thanks guys..
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