Cooling fans not working
Moderator: RichardW
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Hi Jim,
EDITED: RP:07859 CJ 1 0018 XUD9TE 16th May 1998
I do know it's had a new radiator in the past (which is date stamped about '04 I think) so some things around the area would have been disturbed/disconnected and judging from the amount of fasteners and bits "left off" from previous jobs indicates at least one careless mechanic has been here before me so I'm wondering what's behind the relay sockets?
Thanks in advance for the diags.
EDITED: RP:07859 CJ 1 0018 XUD9TE 16th May 1998
I do know it's had a new radiator in the past (which is date stamped about '04 I think) so some things around the area would have been disturbed/disconnected and judging from the amount of fasteners and bits "left off" from previous jobs indicates at least one careless mechanic has been here before me so I'm wondering what's behind the relay sockets?
Thanks in advance for the diags.
Last edited by MikeT on 15 Jan 2009, 22:28, edited 1 time in total.
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- Sara Watson's Stalker
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I'll throw in my two bob's worth of fan issues - warning, amateur diagnosis!
A squealy O/S fan eventually refused to operate, causing a dead short that cooked its relay (in my case, the upper right of the trio, with green socket). Total failure was evidenced by the "pulsing" of one fan at high speed, above normal temperature operation (up to 100°) and a motor stumble every time it tried to operate the dead fan - lights dimmed and the idle faltered for a second.
Looking back, I believe the first failure symptoms (other than a squeal) occurred a few weeks back. The car occasionally stumbled slightly when cruising at small throttle openings - I took it as the coil packs beginning to break down.
Fix for the time being, was to swap in a used fan motor (X1, but they fit the same) and a replacement relay with 30A piggyback fuse built in. I cleaned the relay socket's blackened terminal with W&D paper folded into a stiff "stick". Blew about a kilogram of dead locusts out the radiator/condensor area, too!
In a nutshell, my fix:
1. Swap dead motor out
2. Clean relay socket
3. Fit new relay with inbuilt fuse
Out of curiosity, how dear are the new fan motors in the UK?
Regards, Adam
A squealy O/S fan eventually refused to operate, causing a dead short that cooked its relay (in my case, the upper right of the trio, with green socket). Total failure was evidenced by the "pulsing" of one fan at high speed, above normal temperature operation (up to 100°) and a motor stumble every time it tried to operate the dead fan - lights dimmed and the idle faltered for a second.
Looking back, I believe the first failure symptoms (other than a squeal) occurred a few weeks back. The car occasionally stumbled slightly when cruising at small throttle openings - I took it as the coil packs beginning to break down.
Fix for the time being, was to swap in a used fan motor (X1, but they fit the same) and a replacement relay with 30A piggyback fuse built in. I cleaned the relay socket's blackened terminal with W&D paper folded into a stiff "stick". Blew about a kilogram of dead locusts out the radiator/condensor area, too!
In a nutshell, my fix:
1. Swap dead motor out
2. Clean relay socket
3. Fit new relay with inbuilt fuse
Out of curiosity, how dear are the new fan motors in the UK?
Regards, Adam
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Ooops.
Previously:
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Couldn't find a motor on its own but the fan assemblies are around £100addo wrote:I'll throw in my two bob's worth of fan issues - warning, amateur diagnosis!
A squealy O/S fan eventually refused to operate, causing a dead short that cooked its relay (in my case, the upper right of the trio, with green socket). Total failure was evidenced by the "pulsing" of one fan at high speed, above normal temperature operation (up to 100°) and a motor stumble every time it tried to operate the dead fan - lights dimmed and the idle faltered for a second.
Looking back, I believe the first failure symptoms (other than a squeal) occurred a few weeks back. The car occasionally stumbled slightly when cruising at small throttle openings - I took it as the coil packs beginning to break down.
Fix for the time being, was to swap in a used fan motor (X1, but they fit the same) and a replacement relay with 30A piggyback fuse built in. I cleaned the relay socket's blackened terminal with W&D paper folded into a stiff "stick". Blew about a kilogram of dead locusts out the radiator/condensor area, too!
In a nutshell, my fix:
1. Swap dead motor out
2. Clean relay socket
3. Fit new relay with inbuilt fuse
Out of curiosity, how dear are the new fan motors in the UK?
Regards, Adam
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- Sara Watson's Stalker
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Citroën Berlingo
Alfa 147 - x 93
Cool! (Sorry, couldn't help myself... )
Here the fan assembly (motor and blade) retails around $700 ex-dealer. At one quarter that, I can see why you'd fit a new one rather than rebuild!
The motor itself bears the brand "ECM" and a designation B9. I haven't yet found any description or manufacturer links, but my French is well below average for a car forum like this.
Regards, Adam.
Here the fan assembly (motor and blade) retails around $700 ex-dealer. At one quarter that, I can see why you'd fit a new one rather than rebuild!
The motor itself bears the brand "ECM" and a designation B9. I haven't yet found any description or manufacturer links, but my French is well below average for a car forum like this.
Regards, Adam.
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2008 C5 X7 1.6HDI VTR+ Saloon - x 231
RP:07859 CJ 1 0018citrojim wrote:Mike, what's the RP number of your car? With that I can then post up the right applicable diagrams.MikeT wrote: considering we're not 100% sure the given wiring diagrams are that of my car?
What's the best way to find the missing feed if I don't know where the wires originate from?
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Hi Mike,MikeT wrote: What's the best way to find the missing feed if I don't know where the wires originate from?
The diagrams I posted on page one of this thread are the correct ones for your car according to the RP number. Have a look at the harness and location diagrams. The harness diagram will tell you which harness carries which wires and the location diagram will tell you physically where they are on the car.
Jim
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
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- Sara Watson's Stalker
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Citroën Berlingo
Alfa 147 - x 93
I downloaded those diagrams and found them immensely useful. It's a nice simple arrangement (if one assumes the Bitron unit to be 100% functional).
One thing I wondered about for the Bitron. Does the output which triggers the crossover and secondary relays, and also feeds the diagnostic port, have a signal waveform superimposed on it - or does the diagnostic unit simply look for 12V at that pin?
Thanks, Adam.
One thing I wondered about for the Bitron. Does the output which triggers the crossover and secondary relays, and also feeds the diagnostic port, have a signal waveform superimposed on it - or does the diagnostic unit simply look for 12V at that pin?
Thanks, Adam.
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- Posts: 4809
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2008 C5 X7 1.6HDI VTR+ Saloon - x 231
Okay, thanks for confirming that Jim.citrojim wrote:The diagrams I posted on page one of this thread are the correct ones for your car according to the RP number. Have a look at the harness and location diagrams. The harness diagram will tell you which harness carries which wires and the location diagram will tell you physically where they are on the car.
I can't seem to print the pics properly, getting just a portion of one page per sheet of A4 and selecting the "4 per page" print setting doesn't sort it either. I have to work off my screen for now.
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Save them as jpegs Mike and use the Windows built in picture viewer to view and print them. It will resize them for printing and offer you several options. Beware one of the full-page print options will crop the edgesMikeT wrote: I can't seem to print the pics properly, getting just a portion of one page per sheet of A4 and selecting the "4 per page" print setting doesn't sort it either. I have to work off my screen for now.
If you try to print direct from your browser, they will end up printing wrongly as they're big to start with...
Jim
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
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- Sara Watson's Stalker
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Citroën Berlingo
Alfa 147 - x 93
Mike, If you do click on the link to get the picture showing - assuming Windows XP - select Print Preview from the lefthand dropdown menu (headed File).
The image will appear on your screen - there's a little picture of a cog in the upper screen menu pictures which is for page setup; in that you can nominate the paper size (A4 works for me) and adjust the margins if required (not needed here).
On the right hand side is an options box with your chosen scaling - select "Shrink to Fit". Each time you modify stuff, the Print Preview should change slightly. Once you see it all as per the actual screen view, select the Print icon (lefthandmost one), and progress to printing.
Regards, Adam.
The image will appear on your screen - there's a little picture of a cog in the upper screen menu pictures which is for page setup; in that you can nominate the paper size (A4 works for me) and adjust the margins if required (not needed here).
On the right hand side is an options box with your chosen scaling - select "Shrink to Fit". Each time you modify stuff, the Print Preview should change slightly. Once you see it all as per the actual screen view, select the Print icon (lefthandmost one), and progress to printing.
Regards, Adam.