04' 150 5.4 Bucking up hill around 40-45mph
05-20-2015, 06:58 PM
#21
Senior Member
I have been having the same issues with my 2008 FX4 5.4L V8.
for me 05 FX4, bucking seems to only happen in overdrive and at the said 45-50 mph mark.
plugs have been replaced, MAF has been replaced, throttle body has been replaced, coils have been replaced, injector service has been performed, catalytic converters have both been replaced ...next was going to be VCT and/or cam phasers ..i think will try the fuel filter..
oh did i mention loss of power, lack of throttle response, and sometimes failure to downshift when pedal hits the floor ??
any advice or input would be greatly appreciated.
If i didn't love the truck i wouldn't keep pouring money into it.
Thank You Everyone
plugs have been replaced, MAF has been replaced, throttle body has been replaced, coils have been replaced, injector service has been performed, catalytic converters have both been replaced ...next was going to be VCT and/or cam phasers ..i think will try the fuel filter..
oh did i mention loss of power, lack of throttle response, and sometimes failure to downshift when pedal hits the floor ??
any advice or input would be greatly appreciated.
If i didn't love the truck i wouldn't keep pouring money into it.
Thank You Everyone
11-22-2015, 10:41 AM
#22
Junior Member
Join Date: May 2015
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ok so here's the newest development with this truck..
recently brought it back to mechanic because rattling noise coming from new catalytic converter. long story short converter was covered by warranty however mfr stated that it was completely " burned out " inside. Fact is it only had about 400 miles on it. How the heck ??
I've heard that excess fuel is being dumped into the exhaust system ?
anyone help on this issue? this happen to anyone ?
Really confused now ...
thanks in advance
recently brought it back to mechanic because rattling noise coming from new catalytic converter. long story short converter was covered by warranty however mfr stated that it was completely " burned out " inside. Fact is it only had about 400 miles on it. How the heck ??
I've heard that excess fuel is being dumped into the exhaust system ?
anyone help on this issue? this happen to anyone ?
Really confused now ...
thanks in advance
