Computer fault codes on my 87 Ranger's 2.9 engine

[greaseyfingers]

These are the codes that I got. I'd like to hear your input advice.

Does code 95 indicate that the secondary, in tank, fuel pump isn't working, or does it mean the fuel sending unit isn't working, being the gas gauge stays on empty all of the time.

When I checked my fuel pressure, before, it registered 34 lbs. while idling and went up to 41 lbs. when I briefly revved the engine rpms up.

Code 41 - No exhaust gas oxygen switching detected, always indicating lean.

Code 54 - Air chage temp or vane air temp sensor voltage is too high.

Code 63 - Throttle position sensor voltage too low or grounded.

Code 95 - Fuel pump secondary circuit failure.

 

[Psychopete]

Code 41 - No exhaust gas oxygen switching detected, always indicating lean.

Check for vacuum leaks, and that the o2 sensor wiring is not damaged.

Code 54 - Air chage temp or vane air temp sensor voltage is too high.

Check sensor output versus temperature.

http://www.fordfuelinjection.com/?p=29

Code 63 - Throttle position sensor voltage too low or grounded.

Check 5v reference voltage to TPS sensor, and test TPS sensor with an analog volt meter.

http://www.fordfuelinjection.com/?p=30

Code 95 - Fuel pump secondary circuit failure.

This is not related to an individual pump, both pumps are controlled by 1 relay, 1 wire goes to both. My guess on this would be bad connections in the fuel pump relay plug or something with the relay itself. But it seems the power may be dropping out.

But strange that you have all of these codes at once. Make sure the computer plug is tight and that the pins are making a good connection. This has gotten me before when showing a bunch of codes, everything checked out fine, but connections were intermittent while driving.