I could not pull codes for ****, so a chaged out the computer,

CEL finally turned off, truck now moves, and I can pull codes, and the fuel pumps finally shut off after 3 sec,


I pulled 2 codes, im not sure about the first one,
something like this

Beep-beep-beep
pause
beep-beep-beep
pause
beep

either 331 or 33


the other one 452 - insufficent input from vehicle speed sensor

any help would be awsome,

Thanks

 

What yr truck and cpu?

 

1992 flareside f150
4.9 300 I6


old computer #
eec-iv efi-sd47a
f2tf-12a650-aza g
62es57am21 41130-67
2b04
j2e

other side
9204 2001
e9af 14a624 aa
(gte)


I dont know which one you need

 

If you have a vss code, does your speedo work? try wiggling the connector on the vss which is in the tailshaft of the trans, 33 is tps noisy\harsh, 331 is AIR system not working - Single, Right or Rear HO2S - Air Injection, my guess it would be the tps.

 

damn, your good

no my speedo doesnt work, or my mileage

and no my AC doesnt work, I did see some pin holes in one of the tubes

TPS- I changed the TPS awhile back along with every other sensor,
should I try putting the old TPS back in???

The truck does still run roughish, no popping or anything like that, just kinda sluggish untill about 2000rpm

new injectors, plugs, TPS, IAC, EGR sensor, FPR, ECT, ACT, MAP, coil and relays, and a computer,

 

also

there are 2 vacuum ports on top of the TB, in front of the throttle plate?
what do those go to, my manual does show anything about it,