Correct temp sender?

Hi Rich,

If the part number is the same as shown in the P6B parts catalogue, then it may be right, well it should be..you would hope. If it were me I would go for the genuine Land Rover item, more expensive but quite often you get what you pay for.

Ron.
 
Thanks ron... That's what I needed :) just knowing the lr and Rover parts match in numbers!

Thanks

Rich
 
Well after swapping these today, I'm of the opinion that something else is permanently making the temperature read high. The temp again hovers at the top of the green/bottom of the red but the infra red thermometer says 87.5 degrees. Is there something in the system that could cuase this? Doesnt seem right for voltage regulator as when i've seen these go before the gauges would move when engaging lights and the like. I know my thermometer is going to be right but theres something disconcerting about the gauge sitting where it does...

Rich.
 
There was only one type of sender issued for all P6B models, so both the series one and two cars had the same one fitted. Has your gauge always read on the high side right from the word go Rich?

If so, and having changed the sender then the gauge would seem to be at fault. Do you have a spare gauge that you can try?

Ron.
 
I have a spare so I'll give it a try :) I guess to paraphrase once all other options then whatever's left....
 
Hi, the only thing I noticed was that the date range for the LR fitment is
the same as the SD1. SD1 senders can give wrong readings.

Another remedy is to remove the gauge and 'fine tune' the needle.

Colin
 
I went to change the gauge for a spare i have but discovered there are 2 and they dont seem interchangeable - one on the car says 018 on the back and the spare says 030 on the back.

Guessing these signify different parts???

Rich
 
Could the wire from the sender be shorting out somewhere between the engine and the dash giving a permanently high reading?
 
If the sender wire shorts out at all the guage will just go full travel. High readings are usually faulty or incorrect senders, high readings at high rpm are faulty voltage stabilizers.
 
High readings are usually faulty or incorrect senders
Click to expand...

Hi,

This is why i ended up at the gauge - 3 senders i've had all give the same result. Warms up to correct running temperature but needle points to edge of green/red once warm. I know theres nothing wrong as it looks correct on the infrared thermometer - had it checked by a garage when i first put the engine in the car. Since getting my own thermal thermometer i'm brave enough to run on the 88 degree thermostat now :) Just need to sort the gauge i think???

Rich
 
Did you buy the 3 senders from the same, or different, places?

TBH I think that you'd be best to borrow a good known accurately working one and try it in your engine, then you'll eliminate or prove the guage or the sender as the problem.
 
They're 3 different ones... I went for the landrover one this time as it has the correct part number on the diagrams on the roverclassics site.

I could try warming up the car then just putting the spare gauge in circuit too... Or see if stan has a known working one i guess! There's no hurry on this because i know it's OK really - just one of those annoying little things on the list to do!

Thanks,

Rich
 
rockdemon said:
Or see if stan has a known working one i guess! There's no hurry on this because i know it's OK really - just one of those annoying little things on the list to do!
Click to expand...

It's a psychological problem though isn't it? You know the actual temp's OK, but because the guage reads high you still can't help worrying....
 
spot on :) and of course if something is truly faulty you dont know quite what it's behaviour will be when something really does go wrong! Just because it's linearly wrong at 88 degrees it doesnt mean it'll be wrong by the same amount at 120 degrees....
 
My V8 suffered exactly the same problem around 6 years ago when it was in with the tuners for a rolling road tweak. They phoned me to say they couldn't push it too far as the temperature went into the red when on the road for a little while.

The nice man from the tuners helped me check out the problem; he used one of those infra red thermometers and then commented to me that it wasn't actaully running hot. After they finished the tune up (with the needle in the red), I changed the NEW sensor over (I subsequently bought a replacement from JRW). Fixed the problem straight away. It seemed at the time there was a rogue batch of sensors in circulation.
 
Good to know it's not just me! Thing is every other one i've read about changing the sender fixed it...

Rich
 
Not the first thread I've read with this problem by a long shot! I've also not read a transferrable technique to finish up with the correct one! I think I might wait until Ian is back from the US and have a chat with him. Then if all else fails you could always buy one from JRW1

Chris
 
Rich, is your temperature gauge reading 85 C at the middle of the green and 100 C at the red like mine?
Then, the section between the green and red is exactly 90 C.
Given the fact that you are running an 88 C thermostat, i am not surprised at all that your engine runs at 90 C!
After all the 87,5 C reading of the infrared is close enough to justify a deviation.
 
I've drawn on this pic where it points when hot... (Cant drive it at the moment as i'm waiting on a handbrake cable as discussed previously...)

IMAG0247.jpg


Rich.
 
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