Question about Ford Thunderbird
My 1957 Ford Thunderbird V-8 Fuel pump is brand new. Ignition wires are after market and I guess I put the wires back to their places. (Mis-placed wires?) Carburetor is believed OK. Car runs smooth at idle. Didn't check timing yet, but I guess should be right. Yet, car back fires loud at test drive. Can you give me any idea?
Hi mnfchen, here is a little info for you,enjoy, on the 272-292 and312 cu.in the firing order is:
1-5-4-8-6-3-7-2 (from front to rear right: 1-2-3-4 left:5-6-7-8
spark plugs should be gapped @.035
timing is 3 deg BTDC for manual trans
6 deg BTDC on ford-o-matic
valve lash hot and @idle .019 in/ex
idle speed for manual trans is 475 rpm
idle speed ford-o-matic is 450 rpm
hope this helps you good luck :)
Posted on Nov 13, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
May 20, 2014 | 1997 Ford Thunderbird LX
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· Fuel Pump secondary circuit shorted to power
· Fuel pump relay contacts always closed
· Open in fuel pump monitor (FPM) circuit between ECU and connection to POWER TO PUMP circuit
· Heated Exhaust Gas Oxygen (HEGO) sensor shorted to power
· faulty ECU
Engine Does Not Start:
· Open inertia switch or inertia switch circuit
· Open in or between ECU and fuel pump (This includes open in fuel pump brushes/windings)
· faulty ground connection at fuel pump
The easiest way to check this circuit is to go to the fuel pump relay. If the relay clicks when the key is turned to the "RUN" position, then the inertia switch circuit is ok.
The Pink/Black wire starts from the fuel pump relay and goes two directions. One side goes back to the fuel pump. The other side is the fuel pump monitor circuit and goes to pin #8 at the ECU. This wire should only be hot for a second or two when the ignition is turned to the RUN position.
The fuel pump relay receives power on the Black/yellow wire. It comes from a fusible link at the power distribution center. This wire should be hot at all times.
If all the above is working as designed, them you probably have a bad fuel pump.
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