ranger 88 2.9L loss power

[Antonio quinto]

Hola:

Tengo una falla en una RAnger 88 motor 2.9, la falla es la siguiente:
de repente pierde potencia y a los tres o cuatro segundos se recupera, he probado cambiando las dos bombas de gasolina, pero el fallo continua, he sacado los codigos de error y son los siguientes, con motor apagado 67; 12; 94; 19; 62; y con motor encendido son 12; 21; 13, 77;

hi:
i have a ranger 88 2.9L and it falls, when is hot loss power for 3 or 4 seconds, and rerecover de power, i tray with a new fuels pumps, one at the frame rail and other at fuel tank, are new, a have test the truck whit a fuel pressure test at de windsheld and the fuel pressure normal is at 30 lb and whel fails is at increse to 40lbs, an i was intent to fix the problenm with a new tfi module, but does not work, the trouble codes are engine off and sctch on: 67; 12; 94; 19; 62; an engine run 12; 21; 13, 77;

what can i do?

 

[IMenriched]

check for vacuum leaks....there is good vacuum diagnosis information in the "Tech Library" here on TRS.

make sure the electrical grounds are good.

check the fuel pump relay

 

[Antonio quinto]

thanks for te answer, i have check the fuel pump relay and te electric wire, and i was fix a wire so whart it was conected to the ignition coil, near to the fender and i'm shure the electric power to fuel pumps are ok, the inertia switch is canceled for the test,
i wil tray whith the vaccum

thanks