have 94 thunderbird with 4.6 v8, been to many shops no one seems to know what is wrong.replaced all 4 o2 sensors,check engine light still will not go out,has no power will bog on full throttle and stumbles.does anyone have any ideas?
all the shops pulled the codes and tried to fix it but it only got a little better.
this is my sisters car and has had these problems for a while.
i am not a ford guy so any help would be great,thanks ANDY.

 

O2 codes and stumbles and runs poor, Sound a whole lot like a plugged converter. If it is possible to remove the upstream O2 sensors and drive vehicle with them removed and see if the vehicle power comes back albeit loud. If power is there next reinstall one side at a time and see if you can find which side is affected.

 

sorry,the converter has been replaced also.

 

hey what kind of times you turning,et and 60 foot?

 

Thanks for finally asking. Been around here for a while and no ones asked. Car has run a best of 9.985 seconds at 131 mph with best 60' of 1.316, Oh yeah how many of your converters are new?

 

once again its my sisters car and she said they replaced the converter,i dont know how many they replaced.hell i did not even know it had two.she lives about two hours from me and have not seen the car in about two years.
looks awesome!
had a 67 camaro that ran 9.01 @148mph with 1.23 60 foot,it should have ran mid 8s,but lost #7 ex. pushrodhalf way through run.
to make a long story short,GOT MARRIED,HAD KIDS,SOLD CAR,GOT EVERYONE 4 WHEELERS!now we all ride together and have fun.

 

Actually that car has 4 converters if I remember correctly. My race car runs a small block stroker all motor. I'm a little different in my circle, but I like being different. Next season after current mods I'm looking for mid 9's so we will see

 

468 BB CHEVY FULL ROLLER,12.5 TO 1 CR.
MERLIN RECT.PORT HEADS,PORTED BY BURLINGTON PERF.
DART INTAKE, PORTED BY SAME
1050 DOM.
NOS PRO TWO STAGE
GLIDE WITH HIPSTERS BRAKE
COAN 5500 STALL
3200 LBS WITH MY BIG BUTT IN IT


man i can work on chevys, but dont have a lot of experience on fords,was hoping for an "oh yah its just one of those dohickys that allways goes out on them thunder turds"
guess it wont be that easy.i did find something about a temp. sensor going bad and not sending any codes,then causing a bunch of other codes to get kicked out.
and maybe going into closed loop, fouling everything up.
any ideas?