My P38 had a ticking noise both when cold & warm for about ten years & 80K miles. It never got any worse nor seemed related to any performance problem. I always put it down to sticky lifters. It was only cured when I had V8 Developments completely refurbish the engine 18 months ago.
As well as replacing the screenwash reservoir level sensor as I documented in the other thread I also over the last couple of days have fully serviced the car with oil filter, oil change, air filter, pollen filters etc It's now done about 190,400 miles.
The most important thing is that it is now all back together & everything works including the headlamp wash wipe. When I first switched on after re-assembling everything I still had the low screenwash error message. Happily this turned out to be correct & when I filled up with screenwash the message disappeared.
Chrisp38 wrote:
Lots of bolts on these things are overly long.
Is it an option to mole grip the other end and unscrew the broke bits that way?
I tried that without success. I was able to drill a hole adjacent to the sheared off bolt & the reservoir is now securely held in various places with substantial cable ties. I had spotted that there was a small leak from the pump that washes the main screen. I swapped it for the identical one that I had with the used reservoir. When I got the rubber tubing off the pump I discovered that the outlet pipe was fractured & would in time snapped off completely.
When I removed the headlamp I had to snap off one of the lugs because it was impossible to undo the bolt. It seems to be held securely with the other three nuts so I don't think that I need look for a replacement.
My used screenwash reservoir with pumps & sensor arrived this morning. The good news is that this float does float so it's looking good so far. I'm not really looking forward to putting it all back this weekend as I think that I might have lost one or two screws/bolts plus I managed to damage one of the lugs on the headlamp that takes the retaining screw. I have also got to figure out how I replace the two bolts that secure the reservoir as I sheared off the heads while attempting to remove them. There is no space to drill them out.
I just found a reservoir complete with 3 pumps & sensor on sale for £33.29 so have ordered it. Interestingly it has the same arrangement of pumps as my reservoir with the rightmost pump different to the other two so I suspect that it is original. Fingers crossed that the sensor is OK. I would still have preferred a new sensor but I haven't seen any similar while Googling.
The actual sensor AMR3270 is NLA but it is still possible to purchase a genuine LR reservoir complete with pumps & sensor for about £300. I could buy a used reservoir complete with sensor for about £40-£60 on eBay but surely there must be some after market float sensor that would be suitable. The sensor gives me 81.8 ohms when up in the 'full' position (1st image) & infinite ohms i.e. open circuit when in the lower 'empty' position (2nd image).
I soaked the bolts securing the reservoir in penetrating oil & left them overnight but still I managed to shear off both bolts as I tried to undo them. I have managed to loosen the reservoir enough that I can drop it down & access the sensor which is much further back than I thought so it was little wonder that I couldn't reach it without loosening off the reservoir. You can see the hole where the sensor fits & also that the rightmost pump is different to the other two.
I am not sure how but the sensor itself is working OK in that if the float is moved to the upper position the error message disappears. The problem as I discovered when I put the sensor in a glass of water is that the float doesn't float.
Chrisp38 wrote:
Loose hoses could be off the fog lights.
Front bumper removal is easy really as they never seem to be rusted up like the rears.
The fog lamp is currently dangling by the hoses. I was intrigued to notice alongside the cables that there is a hose either side of the lamp unit & wasn't sure what they are there for.
Most of my time today has been taken up with attempting to get at the washer level sensor (see other thread) but I also took the opportunity to do a couple of things that were quick wins.
I replaced the lower tailgate strap that snapped when I jumped up in the tailgate the other day.
I had problems with the tailgate button some months ago & managed to revive the rusty spring enough that it would work again but I had bought a stainless spring packaged with a couple of rubber gaskets which today I finally got round to fitting.
Finally I replaced the driver's armrest with a used one from eBay as the old one had broken so the arm wouldn't stay up any more. Ever since I first got the car it's never parked upright properly as it would swing round onto the back seat if I let it but finally my new armrest works as intended.
My RAVE says I need to remove the RH wheel arch liner to remove the washer reservoir. In fact it doesn't seem to be necessary. I previously removed the fog lamp to get better access & I have now removed the grill, headlamp & indicator lamp. I still cannot see or feel the sensor or identify any connector. I can however get to the two bolts that hold the reservoir to the chassis. They look very rusty so I think that I probably need to give them a good soak in penetrating oil before I start trying to undo them.
My plan is to drop the reservoir out so that I can get at the sensor. I will try reviving it as it may be that it's just sludge up. It looks like the only way to get a used sensor is to buy a whole reservoir including pumps & sensor which seem to go for £40-£60 on eBay. I need to sort out the headlamp washers as only the driver's side currently works I have found a couple of loose hoses that look like they should be for the washers. It will easier to see where the various hoses run with the headlamp out of the way.
Interestingly looking from the from of the car my right hand pump is different to the other two with the connector on the top not on the side. It's not been replaced in the 14 years that I have owned it but perhaps the PO did it?
I've been trying to get at the sensor lead all afternoon & I just cannot reach it. I removed the right fog lamp to give me better access & I can run my hand over the top of the pumps but I cannot feel where the lead goes to the sensor. Does it mean that I need to remove the bumper to get access?
In my research I have found contradictory messages as to whether you need to disconnect or short out the connector to the sensor. In particular I found a couple of separate posts by @Martyuk stating that you only need to disconnect the sensor to get rid of the error message but I also found someone who had actually needed to short out the connector lead to get rid of the message.
Access is difficult but while disconnecting is possible (& I thought that I had done this) shorting out with a piece of wire would be difficult. The solution would be to get one of the blue connectors that is on the end of the sensor fly lead & short it out with a soldered wire then disconnect the plug & plug in the ready shorted connector. I have looked the ETM & the connector is C192. Where can I get one of these sockets?
I have been getting the low screen wash error message for quite a while now & I have been investigating how to fix it. The screen wash reservoir is of course full. At the recommendation of @Gilbertd I left a hose running in the reservoir as apparently they can get sludge up. This did work the first time that I did it but the error message returned. I have subsequently left a hose running for a couple of hours to no effect.
The sensor AMR3270 is NLA & the only way to get a used one is to buy a complete reservoir with pumps etc & then you take the chance that the 20+ year old sensor won't work anyway.
The only issue with having the low screenwash message is that to conserve screenwash the headlamp wash/wipe is disabled. I have read that just disconnecting the sensor should get rid of the message but that doesn't seem to work for me. Access from underneath isn't great but I thought that I had found the blue plug that connects to the sensor & disconnected it but perhaps I got the wrong plug?
I need to look in RAVE to see how easy it is to replace the sensor. Even assuming that I could get a replacement it looks like it would be quite a chore to get at it.
JimAHH wrote:
Perfect! Thanks a lot. They are half the price of the genuine LR part so I have just placed an order.
I fitted the new motor yesterday & the wiper arm fairly whizzes across the screen now. I had forgotten what it should be like so on reflection it's not been working properly for years. I started taking the old motor apart & discovered that the drive spindle was seized. A bit of penetrating oil & some judicious wiggling released it enough that it started working again. So it's been put on the shelf with the other parts.
The only problem I had fitting the motor was that the angled rubber grommet had split at it's thinnest & the new motor didn't even come with the spacer. The part number is STC2811 for the whole set labelled 2 in this illustration but this is NLA. I was able to effect a repair with some gaffer tape so it's OK now. 
One issue I now have is that the plastic trim that goes across the top of the upper tailgate covering the wiper motor has two shaped foam filters that were caked up with 24 years worth of crud. I have tried washing them but they started to disintegrate. Amazingly the genuine parts are still available (AWR2014 ) but at the ludicrous price of about £25 each. Does anyone have recommendations for some foam that I could cut to size? they look to be about 20mm thick.
For my satnav I use TomTom on my iPhone 12 Pro Max. It's in a very decent Brodit holder & is powered from an adapter in the cigarette lighter. I plan on getting the GROM Bluetooth so the iPhone can be both satnav & media hub. I used to think that I needed a DAB radio but there really is no need when you can stream over the Internet. I did contemplate getting an iPad Mini as a dedicated satnav/media centre in the car but TBH the iPhone screen is big enough.
Problem solved or rather problem correctly diagnosed as I haven't reassembled it all yet. I paid £15 for a used rear wiper motor from East Coast 4x4 in Beccles. I plugged it in & confirmed that it's working OK when I operate the stalk.
I suspect that the original motor could have been refurbished but compared to buying a used motor for £15 it would have been more hassle than it's worth. In any case I won't be chucking it away just putting it on a shelf in the garage with my other spares like the two HEVACs, EAS valve block, EAS compressor etc
I just did some more testing & I'm pretty convinced now that it's the motor that's buggered. If I hold the motor I can feel something moving but it's very feeble. Yesterday when I was testing I didn't actually hold the motor so I missed the fact that it is still live but very feeble. I see that you can still purchase a genuine new rear wiper motor for about £220 but I think that I will go for a used one on eBay at £14.95.
Gilbertd wrote:
Highly doubtful it is the BeCM and has nothing to do with fuse 10. You do have the tailgate closed I assume? Rear wiper doesn't do anything if the tailgate is open....
I had to double check as I wasn't 100% sure about the tailgate. I had removed the motor from the tailgate before I used the Nanocom yesterday so when testing I have just hooked up the motor to the loom & let it dangle. Testing today I find that the motor doesn't work at all whether operated from the stalk or the Nanocom. The rear wiper is on the same fuse as courtesy lights & tailgate light which are all working. I'm pretty certain that I did have the tailgate shut yesterday & it was definitely shut today.
It's an odd coincidence if the motor had failed totally since yesterday. I suppose that I will have to test the motor in some way before proceeding with troubleshooting. I think it is a 3-pin plug on the motor.