2004 156 Jts Selespeed pump relay location

[thebear1971]

Howdy all have a Selespeed Pump relay stuck error come up got a new relay but not sure where the corresponding relay is to change any ideas
Kind regards Ted

[Citroënbender]

Bazz will know, he'll probably reply soon.

Are you aware that error is often the symptom, not the root cause?

[bazzbazz]

The relay is above the glove box. There is a small access panel in the roof of the glove box.

HOWEVER, the relay sticking is rarely the cause, it is almost always caused by a failing accumulator.

The accumulator pressurizes too fast and bumps past the upper limit of the pressure regulator, the system interprets this that the pump is stuck on (the Relay) causing the system to over pressurize.

As CB mentioned, diagnostics is much a "Black Art". 

[Blue Daimler]

Hi everybody happy Xmas and have a safe new year.
I was hoping buzz could help me out.
I'm having a problem with the relay, front of battery, and selespeed pump priming when I open the door. im thinking it is the red relay closest to the engine. Is the relay for the pump usually a 30 amp or 50 amp?
I swapped red relays (30amp)  around and it seemed to get the pump working.
Before I start buying new relays is there a common problem that manifests it self around the 170 -180 K Mark? I have a 156 2000 twin spark.
I know it's not the pump and no fuses are blown. Shouldn't a fuse fail before a relay?

[Citroënbender]

Have you done any diagnosis or replacement since we last worked through this issue?

Bear in mind:

• Accumulators show no external signs of failure.  The only "true" test is a static pressure test on an hydraulic test rig, the pump cycle time is a good enough "on car" substitute in the absence of a test rig.
  
  
• Relays are 70A, have 8mm switched terminals and are cheap enough in aftermarket (eg OEX brand).
  
  
• Pumps show no external signs of failure, a pump motor with worn brushes will work fine when cold or under light duty, but fail to keep up under heavy cycling conditions (eg, self-calibration routines or busy manual shifting).
  
  

[Blue Daimler]

Hi Citroenbender I had the accumulator replaced prior to present problem and have replaced the pump.
My red relays are 30amp. There are 4. There are two black 50amp relays. I have no 70amp relays in the box in front of battery.
I am due to have the vehicle booked in to alpha mechanic early in Jan 2019.

[bazzbazz]

Are you sure it's the relay causing trouble and not just the fact the brushes in the pump are worn out and sticking?

If your car is at 170,000 km and its on the original pump I can assure you the brushes are most likely cactus.
(And yes, I AM aware that sentence is an oxymoron) 

[Citroënbender]

If your car is at 170,000 km and its on the original pump...

And you give me flak for not reading carefully! 

The prevailing questions as I see it, are - was the recently replaced accumulator new or "good used", and ditto on the replacement pump?

[bazzbazz]

Yes, you're quite right, I did miss that it was mentioned that the pump was replaced. But as you say, were the Accumulator & Pump
replaced with refurbished ones, or items from a wreckers?

Just one question, why are we talking about the relays in front of the Battery? As I have already explained, the Selespeed pump relay of a 2004 156 JTS is in the compartment ABOVE the glove box, NOT in front of the Battery, that is for a 156 Twinspark.

[Blue Daimler]

Hi guys. I did mention I have a 156 twin spark.
The pump was refurbished pump and yes it is working. I connected the pump straight
To bat with leads and it primes. The accumulator replaced by alpha specialist.
The reason I'm at the relays is :
When replacing one red one (what is referred to in manual as the diesel relay, glow plugs I would imagine) the pump works when open drivers door;
When I received the pump it also came with a relay, it was a 50amp black 4 pin relay.
I seemed to have fixed the pump but now my interior fan for air con and heater doesn't go.
For the life of me I can't find the fuses for it. Go figure.
As I said before it is due for a trip to alpha guy in cairns in early January, thanks guys I have learned heaps.
any hints on internal fan fusses.

[bazzbazz]

Sorry Blue, missed that, was on autopilot & just working off the original posts title.

Must be suffering from "terminal fuzzy mindedness" at the moment. 

[Citroënbender]

Hints?

1. Owner's Manual
2. Elearn download

NB: My personal experience with accumulators showed a new one let the system stand over nine minutes between operations of the pump. That is, without selection of any gears.

And if you are a Jag/Daimler aficionado, where are all the affordable XJ complete front subframes?

[Blue Daimler]

Thanks Citroenbender no I'm not a jag/daimler owner although some 10-12 yrs ago I owned a jag daimler and its colour was blue, hence the name.
I re checked the owner manual.

[Citroënbender]

Now you could benefit from a copy of elearn, the "factory" electronic manual, there's a recent post by (I think martymoose) where he purchased a download and set it up on his computer for reference.