I've searched high and low for a fuel pump. I can't find one anywhere. Does anyone have any recommendations or suggestions????

 

I can't remember if its the H&E or the later convertibles that use the weird two tank system. Is that what you have? Are you looking for the internal fuel pump?

 

Yes, it does have the two fuel tank system. I'm pretty sure there are two pumps in them as well. One in the lower tank and then the other I'm not sure where.

 

There are two pumps, one pumps from the lower to the higher tank and one from the higher tank to the engine! If nobody knows for sure, the best thing is to remove the pumps and find ones the same. They will certainly be widely available not-specialist pumps.

 

second pump is from a Ford Bronco

 

Higher tank fuel pump (main) is : CBC5657, no problem to buy here : Jaguar Partno_CBC5657_FUEL INJECTION PUMP XJ INJECTION/XJS_David Manners Group Discount with alts (UK).
And I think there : https://www.jaguarlandroverpartstore...l-pump-cbc5657 (Jaguar Land Rover Palm Beach7550 OKEECHOBEE BLVDWEST PALM BEACH, FL 33411)
Second (delivery fuel from low to high tank) is H&E special, not possible to buy original (I think). But it can be any pump, which is possible to insert to existing holder (it need some work).
Maybe as wrote "Coventry Foundation" from Ford Bronco.
Only one thing.
The transport power of the second pump must be higher than that of the main pump, otherwise the second pump could not supply enough fuel to the empty top tank.

 

Main pump location in boot right side under battery:

 

Second fuel pump under cover in cabine (larger cicrcle):

 

Roman I have an Hess car. the second pump is simply a transfer pump and is not a FI rated pump but rather a pump for a carb car. Your understanding of the Hess fuel system is off a bit. You will find the second pump (if original) has no markings. A simple match up will lead you to the bronco pump which is a drop in. You will also find it is much less than the pump from others. Hess was a US company and used a US pump in their work on the Hess.

 

George I have an Hess car too I think, that my understading Hess fuel system is good.
That is why I wrote that the pump in the bottom tank must have sufficient flow capacity to supply the upper tank (even if it works continuously and in the top tank is a partition, that partly prevents the outflow of fuel from the upper tank to lower tank).
I have not written anything about the required pressure, which is unimportant for this pump. It is important for the main pump for the upper tank to be able to push the FPR valve out of the fuel rail output.
I know the pump for the lower tank is smaller and can be essentially replaced by any (for example, Bronco). I changed this pump.
I know the history of Hess & Eisenhardt (unfortunately already defunct, has a successor named Centigon) and I know, that it is a US company.
I also know that, for example, magnetic dials from US Rochester Inc. have been used for fuel dials of both tanks.
Maybe please, you can help. I cannot to buy these dials in Europe, although Rochester is represented in Belgium. I know that Rochester is still producing this dials in the US, but I can not find a company in the US to supply it to me.
Thanks Roman

 

I see--you are referring to the tank in the cars interior as the lower. So let's say tank in boot or tank in interior. The pump in the boot must be FI pressure to feed the beast. The pump in the interior tank should be low pressure as it is the transfer pump. That said I am not sure of your term "dials"'. Is this a sending unit? By using the name Rochester I am led back to the many valves in the emissions/vapor system that are made by that company. Can you just use the part number to remove confusion? I have a parts/maint manual and all tech bulletins for that model.

 

Yes yes. Sorry for the terminology, technical English is not my mother language.
Lower tank is in interior, pump with no pressure, only pump with sufficient flow.
Higher tank is in boot, fuel pump (under battery) need FI pressure for injectors and overpressure FPR on fuel rail output (input FPR is not interesting, but I have it on my car).
About "dials".
Hall effect dials (I use Rochester terminology from my correspondence with US headquarters) for measuring fuel in tank (but not gear, only dial which sits on gear, see photo please).

Interior tank dial (horizontal position on the tank):



Boot tank dial (vertical position in the tank):



Maybe it is out of threat, PM will be better ? Or maybe it is interesting for others
Thanks Roman

 

Ok I got you--I will see what is available but will tell you the biggest problem is normally the averaging circuit board. What are the numbers on the unit--do not want to tear my car apart and know the Hess numbers will lead no where.

 

Thanks
Yes, Hess numbers are uselles.
I think, that dial interior resistor way (circuit) is bad, too.
My current search, dial is dial, gear is hardware, on which the dial is "sitting".

Interior fuel tank, top mounting
Gear Number : N6540 59C89 4 holes
Dial : 6540 Senior TwinSite® Sender (apparently), 0 - 90 Ohm range
Hall´s effect dialing, 2 wires

Boot fuel tank, side mounting
Gear Number : N6744-8 D89 5 holes
Dial : P5ABXS0284 0-180 Ohm range (this number is from Rochester)
Hall´s effect dialing, 2 wires

I had my tanks distributed

 

Thank you so much!!!

 

Regarding the Bronco pump... does anyone recall what year Bronco? I went hunting by eye and came across entirely mechanical fuel pumps for the carbureted Bronco so that wasn’t gonna work . My Hess needs a pump too.

 

Is this it?

https://www.rockauto.com/en/moreinfo...05906&jsn=1003

 

Hi Guys

Looks like the Pump in the Boot/Trunk of your H&E's is a Standard Generic Fuel Pump as fitted to Fords and Loads of other Cars including the Jaguar V12 XJS and although you can buy a very good make like a Lucas (see photo)

These Pumps in the Boot/Trunk, are so easy to change that I always get a Generic one off ebay for around $25 with a 2 year Guarantee which is still going strong some 4 years later, although because they are so inexpensive I always carry a Spare one which I can change by the side of the road if I need to

Which is a fair bit cheaper than calling a Tow Truck!


Lucas Fuel Pump For XJS V12



Generic Fuel Pump off ebay for around £25

 

The in trunk pump isn’t in question. The question is which Ford Bronco pump is used as a secondary lift pump in the twin-tank Hess and Eisenhsrdt cars only,

 

bought my pump for my 99 at Autozone, drive car every day and has been in almost two years