Fuel pumps unusual noise and no start

is this sound coming from the fuel pumps? sounds very strange to me

could it be that the fuel tanks are out of gas and the pumps pumping only air?

 

Not good, and until the fuel pumps run normally with the jumper in place at the corresponding relay socket, it doesn't matter to worry about anything else.

Have you inspected the fuel pump connections in the y horizontal white at the bottom of the fuse-relay panel (by unplugging it)? A large PN (beige-black) wire and a large P (beige) wire.

Also wouldn't hurt to unplug/inspect/reseat the very large 2-spade d-e connector in the RH upper corner of the fuse-relay panel with two huge red wires that brings battery power into the fuse-relay panel and make sure things are clean and the spade connections are tight. Also, make sure the loop terminal where these red wires connect to the stud on the battery positive terminal clamp are clean/tight.

PS Please confirm year and version TR -- is it a CH87 (1987 Swiss) or maybe SA version TR? (Doesn't make any difference for the fuel pump operation, but like to know who the patient is - and the dual air injection check valves indicate it is.)

PPS Well done so far -- you've correctly eliminated a bunch of stuff, and found a for sure fatal flaw.

 

good that you found out the mistake, now only to fix it. may be use 2 external relais for the 2 fuel pumps

 

That looks speciously like the fix I found on my old board! Probably time to get a new one form GT Car Parts and the connector also. Will be a big improvement!

 

I sent my board to Dave Helms at Scuderia Rampante Innovations. He also does really great work.

 

Just FYI -- those other two wires that are directly soldered to the board by the arrow you added are for the water radiator fans. And I would have to guess that something similar has been done to the AC Power connection, too, as that is the one that usually fries first:

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If you do decide to buy another replacement fuse-relay panel, my preference order (and comments) are:

1. Guido's (theunissenguido member name) -- Has large wire conductors for better heatsync behavior at the connections, replaces the horizontal female white 2-prong connector terminals with much more reliable and high-current capable spade-style terminals, leaves all the relays in their stock locations, and no wire splicing in the harness. My only minor nit is how the wire conductors are connected to the terminals as they are just soldered rather than being mechanically connected and soldered (but he's got a lot of them out there working fine for a long time).

2. GT Car Parts -- Has thicker PCB traces for better heatsync behavior at the connections, leaves all the relays in their stock locations, and no wire splicing in the harness. Still uses the 2-prong female terminals in the horizontal white connectors AFAIK so relies on the thicker traces to prevent the terminal burning from occurring.

3. Scuderia Rampante -- Works fine, and solves the terminal burning problem by eliminating them completely, but is the most obviously modified. Some relays and fuses moved to new location, added exposed wires, and harness wire splices needed.

All JMOs, as any would be OK functionally -- and I favor modifications that are not noticeable so that influences my preference a lot.

 

I not care at my competition if you see some not original, the whole car meanwhile is not original. for me the technical has to be perfect.
but if I would have an original car I also would do so that at first sight none will see modifications.