dixie06jn

I have replaced the fuel pump, fuel filter, mass air flow meter, (TPS) throttle position sensor and it still wont run it starts up for about 5-15 seconds and stalls. I drove it 5 miles down the street it sat for a hour then i went to leave and then it started doing this what do you guys think my problem is ??? Please help.

92yoterDD

did you properly set the TPS and AFM? They are adjustable and the TPS has to be set just so. There is a procedure to setting it up. I do not know it off the top of my head. maybe someone who does will chime in.

dixie06jn

No i didnt do that i didnt know you could maybe thats what it is

92yoterDD

here this may be of help

http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml

dixie06jn

I just got the truck running by connecting a wire to two terminals in the diagnoses cap and it runs fine a guy says online its the maf sensor what is that?

92yoterDD

What you did is jumped the fuel pump part supply top the battery basically. The MAF sensor or AFM on these is the sensor that is in the metal housing on your air filter box. The fuel pump is engaged when you turn the key to start. But after the vehicle is started it depends on the AFM for its voltage signal. You more than likely just need a new AFM.

dixie06jn

I replaced the air flow meter though so idk but would the efi fuse cause the fuel pump to not get power?

92yoterDD

Could be a fuse or relay. I would check all fuses with a test light and try swapping around some of Relays behind the passenger kick panel. One of those relays powers a bunch of stuff with the key in the run position.

The AFM has a metal flapper door that opens when air blows through it. Try propping that door wide open then see if it will run.

dixie06jn

Its the fuel pump relat in the truck i figured it out its fried i guess i have a leak in the wind sheild the relay is full of water

92yoterDD

Glad you got it figured out. Good resolution to a issue not many may think of.