Thread: What happened to your D3/D4 today?

So after spending money on the steel pan and some Penrite fluid this arvo I needed a low cost cheer up.

Have been searching now and then for a way to leave tongue in the hitch and still have reverse sensors and a couple nights ago I found a thread on a Peugeot forum, so credit goes to someone else for the trial and testing, basically a physical block of the sensor deflecting the waves a bit further out than the tongue and ball.

So on to tinkercad.com and stretched one of the drag and drop shapes and afixed with some double sided tape and now my tongue stays on to keep the tailgaiting types thinking if they're feeling like lucky punks.

Just spent a few minutes outside testing and all good. I can walk away from and back in range and it detects me but not the tongue and ball.

IMG20251205184038.jpg IMG20251205184025.jpg IMG20251205184005.jpg

I can see it falling apart in short order due to weather affecting tape etc but it works so at some point sooner rather than later I will attempt a more rounded shape with a screw hole for a more permanent mounting.

I have some longer tongues but didn't try them today as this is the one for 99% of my needs.

A few here including myself put clear adhesive furniture discs over the inner sensors which reduces the sensitivity.

Originally Posted by loanrangie

A few here including myself put clear adhesive furniture discs over the inner sensors which reduces the sensitivity.

I read that too, but was under the impression it is ok for a bit of protrusion like the mitch hitch on its own but still required the removal of the tongue?

If it works for you guys with tongue in place please confirm, ta.

Originally Posted by johnp38

I read that too, but was under the impression it is ok for a bit of protrusion like the mitch hitch on its own but still required the removal of the tongue?

If it works for you guys with tongue in place please confirm, ta.

Certainly does work with tongue left in.

Originally Posted by BradC

I did go over every other bearing while I was in there and I'm thinking it's the water pump.

Water pump. After doing the alternator and the A/C pulley, it was the water pump. Bloody strange inverse torx sort of bolts on the water pump pulley, but my metrinch 10mm flank drive managed to get them off and on undamaged.

Did the windscreen washer pump, so now I can not only hear the motor without the bearing whine but I can see where I'm going again.

Originally Posted by BradC

Water pump. After doing the alternator and the A/C pulley, it was the water pump. Bloody strange inverse torx sort of bolts on the water pump pulley, but my metrinch 10mm flank drive managed to get them off and on undamaged.

Did the windscreen washer pump, so now I can not only hear the motor without the bearing whine but I can see where I'm going again.

E-torx, some sicko had a sense of humour when they invented those. I cant see why they are any better than a standard flanged bolt especially on high torqued bolts like the drive shaft.

Probably for machine fitting.

I'll order some M6 flange bolts for next time, but found another fastener Metrinch is good for.

I can sorta see the machine fitting aspect but the thing is tapered and the splines are rounded, so I can see a torque vector there that'd lift the socket off the head as it's turned. I just kept pressure on it as I torqued it up.

It's amazing how slight the 10nm torque is on the water pump mounting bolts. My baby air ratchet nearly overtorqued them just spinning them in.

I stripped the washer pump. Mainly I just wanted to see how it worked. Clever little mechanism. The pump is more positive displacement than centrifugal so it can create a negative pressure on the non-operating side which actuates a little sealing diaphragm. The motor was seized up. I assume the shaft seal failed. Common fault for washer pump motors.