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Post Info TOPIC: Diesel heater fuel pump


Veteran Member

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Posts: 47
Date:
Diesel heater fuel pump


I have just finished installing a PPAP Diesel heater and Im having some issues. It seams the ECU is the main cause and the seller is sending a new one. 

My question is about the operation  of the fuel pump.

When I primed the system and applied power direct to the fuel pump it clicked once then stopped. By continuing this process, apply then disconect then apply, I have been able to prime the system.

From my experience I expected that when I energised the pump it would run continuosly till it reached pressure.

Is this a correct assumption or does the ECU drive the pump by energising then disconnecting?

 



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Guru

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Date:

Hi Bruce,

You may get more of a response posting in the Techies forum.

I fitted a diesel heater in my previous van and I primed the system by gravity and then after a couple of on and offs it operated just fine.
There appears to be more and more problems now with these cheaper heaters than there was when I bought and fitted mine.

Mind you I thought my kit was cheap at around $700.00 (complete) compared to what some of them where costing back then.


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Date:

Thank Geoff
I thought I had posted in Techies Corner till I saw your post.
Have now listed it there also.
Thanks again.

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Veteran Member

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Hope this will help someone https://www.letonkinoisvarnish.co.uk/eberspacher_fuel_2.html

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KJB


Guru

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Excellent article........ simple and clear.



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KB



Veteran Member

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Posts: 47
Date:

Thanks heaps, the article answers my question.

The ECU pulses power to the pump, switching power on and off to provide a single pump of fuel.

I can relax now.

 



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Member

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Date:

jkis wrote:

Hope this will help someone https://www.letonkinoisvarnish.co.uk/eberspacher_fuel_2.html


 Thanks for that link VERY helpful in understanding pumps.



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