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?
Dickodownunder said
02:06 PM May 17, 2018
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.
Bruce Mc said
06:27 PM May 17, 2018
Thank Geoff
I thought I had posted in Techies Corner till I saw your post.
Have now listed it there also.
Thanks again.
jkis said
07:06 PM May 17, 2018
Hope this will help someone
https://www.letonkinoisvarnish.co.uk/eberspacher_fuel_2.html
KJB said
07:40 PM May 17, 2018
Excellent article........ simple and clear.
Bruce Mc said
10:52 PM May 17, 2018
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.
RoamerAllWaze said
01:53 PM Dec 30, 2018
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.
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?
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.
I thought I had posted in Techies Corner till I saw your post.
Have now listed it there also.
Thanks again.
Excellent article........ simple and clear.
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.
Thanks for that link VERY helpful in understanding pumps.