Stuw
Member
- Joined
- May 19, 2018
- Messages
- 20
- Reaction score
- 4
- Year, Model & Trim Level
- 2004 Explorer XLT 4.6L V8
375000kms
Sat for a long time due to a bad bearing, now fixed.
Trying to get it running again. Drained as much fuel as I could from the fill neck attachment at the gas tank. Had stabilizer in it before. Added some premium and fuel system treatment.
Started and ran amazingly well aside from the rusted out muffler making some weird noise.
Drove it around the block and it was as if she had never been parked.
Took it on the freeway for 10 mins and parked for about 45 mins. On the way back going up an incline on the highway noticed a bit of a tug.
Quickly got worse escalating to very poor throttle response and no power by the time I got home.
Suspected plugged muffler due to rusty condition so I cut a relief hole to bypass muffler. No benefit just loud. Will replace muffler anyways.
Noticed catalytic converters are red hot.
Started throwing p0171 and p0174. Also threw an exhaust code which I can't remember *facepalm*.
Pcv valve is not clogged nor hoses. Pcv valve is actually won't restrict flow either way. The little floater inside just rattles around. Should change it.
Changed fuel filter and ran some exhaust treatment fuel additive.
Still sputters, bogs down if I rev more than a bit. Stalls occasionally when decelerating. Very poor power. Hasn't thrown any lean Codes since I changed the filter.
Does it sound at all like it could be bad catalytic converters?
Are my fuel injectors shot?
Where should I start?
It ran so well and just so suddenly declined I really want the old girl to live again.
Sat for a long time due to a bad bearing, now fixed.
Trying to get it running again. Drained as much fuel as I could from the fill neck attachment at the gas tank. Had stabilizer in it before. Added some premium and fuel system treatment.
Started and ran amazingly well aside from the rusted out muffler making some weird noise.
Drove it around the block and it was as if she had never been parked.
Took it on the freeway for 10 mins and parked for about 45 mins. On the way back going up an incline on the highway noticed a bit of a tug.
Quickly got worse escalating to very poor throttle response and no power by the time I got home.
Suspected plugged muffler due to rusty condition so I cut a relief hole to bypass muffler. No benefit just loud. Will replace muffler anyways.
Noticed catalytic converters are red hot.
Started throwing p0171 and p0174. Also threw an exhaust code which I can't remember *facepalm*.
Pcv valve is not clogged nor hoses. Pcv valve is actually won't restrict flow either way. The little floater inside just rattles around. Should change it.
Changed fuel filter and ran some exhaust treatment fuel additive.
Still sputters, bogs down if I rev more than a bit. Stalls occasionally when decelerating. Very poor power. Hasn't thrown any lean Codes since I changed the filter.
Does it sound at all like it could be bad catalytic converters?
Are my fuel injectors shot?
Where should I start?
It ran so well and just so suddenly declined I really want the old girl to live again.