Thread: 300tdi Auto weirdness

I have just replaced my old 88 Waxstat for a new 88 Tridon.
I tested them both before putting the new one in.
The old Waxstat started opening at about 70-75 and was fully open by about 90.
It was fully closed at 70 on the cooldown.
The Tridon started opening at about 85 and was fully open by about 90.
It was fully closed at 80 on the cooldown.
I couldnt see that there would be much of a difference in the flow rate when both fully open.
The early opening on the Waxstat partly explains the very long warmup time especially in winter.
I doubt that the Tridon will have the motor running any cooler - based on what I observed.
Will see over the next few days.

Ok so fuel filter changed, sedimentor had some gritty **** in the bottom but doubt either caused the issue.

Manifold gasket wont arrive till monday, will go on with the new hoses and then test drive.

Tried to change auto filter but realised it was not as straight forward as I imagined so only a fluid refresh in the end. Have a feeling I may have to come back to that! I fear recent fluid change has dislodged crud into the filter causing low pressure slip through the gears.

Inspected wastegate and hose to IP. All looks OK there except the IP line has been rubing on the injector lines. Not right through but not far off!

Looked for other rubs and boy are there some hose rubbing issues in this engine bay. Seems like a lot of the hose retainer clips are broken. Needs a good tidy up!



Oh, and the heater hoses that run around the back of the head is touching the back of the rocker cover and wearing thin! Is that normal land rover rubbish or am I missing a retainer back there too?

Originally Posted by manic

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Oh, and the heater hoses that run around the back of the head is touching the back of the rocker cover and wearing thin! Is that normal land rover rubbish or am I missing a retainer back there too?

Ah! .. Ok then! It may be normal(landrover rubbish), as one of mine is the same.

I popped in some noise insulation on the bulkhead a while back(just push fitted it all and wedged it between pipes and stuff).
Had a bit left over and so used a small piece to separate the heater hose from the corner of the head.
I have a full set of silicon hoses that I got over a year ago now .. still too lazy to fit them up, but got it all on the basis that I really hate those 'amalgamated' hose off hose type designs like the main large rad hose, and that this one heater hose of mine has been rubbing for quite a while and I thought would have popped by now(but hasn't).

One of the things I prioritized when I got mine mid last year. Check all rubbing spots in terms of hoses and badly placed wiring .. and remove unnecessary addons too.

Eddo: on the flange of the waxstat could be a very small circle with a number inside the circle. Mine says 88(so it's a circle with an 88 inside it) hard to read, but a magnifying glass makes it easier.
I'm curious as to whether someone used a 78°C stat in yours.
Mine is the other way round. Hardly opens at 83(maybe a mm).

Hi Authur
The waxstst is also an 88 (about 9 yrs old) so probably just malfunctioning albeit safely....or maybe just differently to the Tridon.
I am not clear on how exactly an 88 should operate ie opening temp, what temp it should be fully open, the gradient of degree of openess vs temp etc.
I assume manufacturers would have this data.

I am not going to change anything else until I get the radiator replaced or reco’d now.
It was rodded about 9 yrs ago. It is the original one so i will probably renew i think.