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30th December 2020, 09:58 | #1 |
This is my second home
None Join Date: Feb 2013
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Tis the season for... FBH posts
So, had the car a week now, FBH whirs away for a minute or two, the n shuts off. Problem I think is that there is no dosing pump fitted. It's reasonable to assume I guess, that a non member may think that once all is connected 'engine end' then that's it. Too cold and wet to be rolling around underneath so will fix that later.
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30th December 2020, 10:26 | #2 |
This is my second home
Rover 75 Saloon & Tourer Join Date: Sep 2012
Location: Lincoln
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If there is a dozing pump then could be the pcb has had it. Damn things. Frenchmike can repair the pcb's.
If you are able, test to make sure the water pump on the FBH is working and the glow plug is within tolerance. I suggest this only to make sure each component works as a faulty glow plug or water pump I think can lock up the pcb but others can advise on this. I have come to the conclusion that an FBH needs to run for 10 minutes or so before you start the engine, so you do not wait for a month of Sundays before getting heat. macafee2 |
30th December 2020, 12:32 | #3 |
This is my second home
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There isn't a dosing pump fitted, the bracket and bolts look like they've been there since new, no wiring pulled down either.
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18th January 2021, 19:42 | #4 |
Newbie
Land Rover Discovey 2 Join Date: Jan 2019
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Hi ,
My Webasto heater has stopped working , is there software that can be used to check it ? Its been working perfectly last winter , the PCB was faulty when I first bought the heater and French Mike fixed it , but I could do with checking it . Regards Stuart Sent from my SM-G960F using Tapatalk |
18th January 2021, 20:28 | #5 |
Posted a thing or two
Rover 75 CDTI Tourer Join Date: Nov 2014
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This is from an old Email from Frenchmike when I had a problem.
I do not know how to get the pictures up but I can forward the Email onto you if you want. WEBASTO failure overall diagnostics Winter is coming and the FBH become useful to warm quickly our diesels. in case of yours looks faulty, here is a exhaustive test: PROCEDURE: (Engine cold and stopped) -At first, unplug then replug the power connector (or fuse F8) in order to reset the system. -Start a run by connecting permanently Pin 3 to earth.(98570 type) (To + batt in case of 66232 model) Simultaneously start a TIMER and listen when the fan stops Pic 1 IF stop after 3 sec, restart 4 seconds later and finally stop at 2 minutes 7 sec; The error returned may be caused by: -Battery voltage lower than 10 volts -Glow plug open or short circuit -Circulation pump open or short circuit -Combustion fan open or short circuit -Fuel pomp open or short circuit -PCB defective IF a weird turbine noise appears with a door’s opening e.g., the PCB is more likely faulty. IF stop after more than 2 minutes 10 sec, then PCB and all devices are good (except doubtful glow plug) IF stop at 4 minutes 5 sec, Glow plug resistor too high (0,6 ohms for instance), IF stop at 4 minutes 40 sec it is a ignition fault, (fuel pump priming fault) COMPONENTS TESTS At first build the ‘magic tester’ made of a 20 watts bulb, 2 pins and 2 length of wire soldered or wrapped. Pic 2 Unclip the smaller L cover by pulling towards you then pushing to access the 3 others connectors. See the schematic principle you will have to pin throw the insulator of the wires. Pic 3 Circulation pump test Pic 4 If light noise and bulb glowing :pump OK If no noise and bright light : short circuit If no noise and no light: open circuit Combustion fan test Pic 5 If strong noise and glowing bulb :pump OK If no noise and bright light : short circuit If no noise and no light: open circuit Fuel pump continuity test Pic 6 If glowing bulb :pump circuit OK but not enough current for action mechanism (one can hear the solenoid pulsing by brief touches with bulb short-circuited) If bright light : short circuit If no light: open circuit Glow plug at last (if all the rest is correct) Pict 7 Start a run (pin 3 control) and simultaneously keep pinning the glow plug wires during the first 5 seconds. If the bulb flash and after 30 seconds the fuel pump begin pulsing, then the glow plug resistor is faulty. |
18th January 2021, 21:26 | #6 |
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Land Rover Discovey 2 Join Date: Jan 2019
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I was wondering if these are any good ? So I can check it and clear faults with a laptop .
Sent from my SM-G960F using Tapatalk |
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