Fuel pump noisy when been in traffic for over an hour

[DCUK Martin]

You own a TVR? I have sold a few of the "run sensors" for them which is a modification of my RPM relay.

Fb.com/mys6cerbera

From the 90s Griffith onward, they're all EFI AFAIK. Pump control on mine is the ECU.

[Bitsyncmaster]

Fb.com/mys6cerbera

From the 90s Griffith onward, they're all EFI AFAIK. Pump control on mine is the ECU.

Some early ones used Kjet. But the run sensor just controls the fuel pump like our RPM relay does in the D.

[CFI]

I was planning on buying an air dam from Hervey, but it looks like his store will be closed for the foreseeable future. Can someone tell me approximately what size the dam is so I can make my own?

[Michael]

I was planning on buying an air dam from Hervey, but it looks like his store will be closed for the foreseeable future. Can someone tell me approximately what size the dam is so I can make my own?

I am planning to do this next time I get my car on a lift. One member here had a working theory that the coolant pipes caused the fuel pump to get hot(by heating the fuel tank and fuel). He dropped his closing plate and attached self adhesive heat barrier to his tank along the coolant pipe areas. Seemed like a good idea to me. I have everything except the time but soon...just in time for winter maybe.

[jorge figueroa]

solution to the problem of overheating of the pump and the gasoline tank in deloreans.
Many deloreans including mine have always had this problem of having the gas pump very hot when you make a long trip around Puerto Rico. And in some cases total failure.
The problem arises from the poor design of the delorean cooling system.
Especially the tubes that pass under the gas tank. These tubes are heated by the coolant that comes from the engine to the radiator, heating the tank, gasoline and the pump to temperatures too high for its proper functioning.
As a result you hear a loud buzzing inside the car (pump too hot) and the possibility of failure.

For some time I was looking for a solution to this problem, and finally found in home depot a type of tape that is used to insulate tubes in the air conditioning system of homes or businesses. (To see photos).
It is an aluminum tape with high density foam insulation.
Using my own delorean I did heat transfer tests with one of the cooling system tubes and found that the heat transfer is practically zero.
With my delorean engine running I put my hand on the coolant pipe with the insulation and felt no heat at all.
If my hand did not feel any heat the tanks of the deloreans either

50919550_2178710368851641_4068140409421824000_n.jpg50079597_2178710412184970_8940790960036511744_n.jpg50713257_2178710612184950_943280160864468992_n.jpg50440744_2178710542184957_6044630208093356032_n.jpg

[BABIS]

solution to the problem of overheating of the pump and the gasoline tank in deloreans.
Many deloreans including mine have always had this problem of having the gas pump very hot when you make a long trip around Puerto Rico. And in some cases total failure.
The problem arises from the poor design of the delorean cooling system.
Especially the tubes that pass under the gas tank. These tubes are heated by the coolant that comes from the engine to the radiator, heating the tank, gasoline and the pump to temperatures too high for its proper functioning.
As a result you hear a loud buzzing inside the car (pump too hot) and the possibility of failure.

For some time I was looking for a solution to this problem, and finally found in home depot a type of tape that is used to insulate tubes in the air conditioning system of homes or businesses. (To see photos).
It is an aluminum tape with high density foam insulation.
Using my own delorean I did heat transfer tests with one of the cooling system tubes and found that the heat transfer is practically zero.
With my delorean engine running I put my hand on the coolant pipe with the insulation and felt no heat at all.
If my hand did not feel any heat the tanks of the deloreans either

50919550_2178710368851641_4068140409421824000_n.jpg50079597_2178710412184970_8940790960036511744_n.jpg50713257_2178710612184950_943280160864468992_n.jpg50440744_2178710542184957_6044630208093356032_n.jpg

is the insulation tape applied only to the sides of the tank or even to the coolant pipes?

[jorge figueroa]

friends of the community of deloreans owners
Greetings from Jorge Figueroa of Puerto Rico.
Some time ago I reported some progress using thermal insulation on some Delorean gasoline tanks with very good results.
In this case you will see how I thermally insulate the gas tank of my DeLorean 01279.
In the first photos you can see that the coolant pipes are already physically touching the surface of the tank.
transferring heat more directly by heating the gasoline which overheats the fuel pump causing it to fail.
The gas tank was cleaned with industrial acetone.
Acetone dissolves any varnish residue from old gasoline.
The thermal insulation used in this case is the same for hoods and firewalls.
Everything was thermally insulated including some surfaces on the chassis where the gas tank is located.
and using very flexible pieces of thermal foam, the spaces between the fiberglass body and the chassis were blocked
to prevent the hot air produced by the radiator from reaching the top of the gasoline tank where the fuel pump is located.
Later I will send photos of this foam insulation.

The final result is incredible.
The fuel pump on my DeLorean has never failed again, you can't even hear it, no more humming noises.

My friends, there are many sellers of parts for Deloreans that offer good products for our cars.
But over the years I have noticed that they never offer a real solution to problems.

It doesn't matter if the fuel pump is the original style or some modern version if the heat transferred from
the coolant pipes to the gas tank is not controlled they will all fail again and again.

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[Michael]

My solution from a few years ago. With the new pump designs today, IMO, it'swasted energy.

20200114_160109.jpg

[ssdelorean]

My solution from a few years ago. With the new pump designs today, IMO, it'swasted energy.

20200114_160109.jpg

Would you still think it is wasted energy if the original fuel pump was being used? It seems that set up is more prone to heat causing pump buzz. I have no experience with the new pumps out there.

[Michael]

Would you still think it is wasted energy if the original fuel pump was being used? It seems that set up is more prone to heat causing pump buzz. I have no experience with the new pumps out there.

I would because there isn't an oe pump on the planet that doesn't suck as they are all cheaply made junk.

The time and energy spent on heat shielding is better spent on a new pump and never ever worry about that crap again.