P6b temp gauge (bar type speedo)

C

CobRov

New Member
hi all,
Im having problems with my temp gauge on my 1970 series 1 P6b it goes over to 100'+ when the engine is at normal running temp......i have replaced the sender on the inlet manifold and the gauge is still playing up....... is there a stabliser on the rear of the cluster??????? or is a new gauge required? pls help ..............ta :? :?
 
i have tested the gauge as described by the haynes manual........ earthing the sender lead the gauge goes right across to 100 +
 
Does it read 1/2 full when the tank is 1/2 full ? If both gauges read high I would supsect the voltage stabiliser on the back of the instrument panel
 
I've just replaced the temp sender on my 2000 because the spade connector was badly corroded. The temp gauage used to read towards the high end of the green before replacement but it now sits in the middle with the new sender. Could be a dirty connection or just the sender on the way out.

CobRov said:
when the engine is at normal running temp
Click to expand...

If the temp guage is reading high, what else have you used to confirm the engine is actually at "normal running temp"? Could be the thermostat, as winston has said, causing the engine to run too hot.

Dave
 
Don't forget there are TWO temperature senders on the inlet manifold. The one on a the top of the manifold on a triangular plate is nothing to do with the gauge and runs the choke light. The one for the gauge is a "normal" looking sender set inside a brass BSP plug that screws into the front vertical face of the manifold. There are lots of varieties of these, if they sell you one for the wrong model, be it series 2 car, SD1, P5B etc etc, then the gauge will read all over the place.

Chris
 
sorry guys replacing the sender is the first thing i did ,,,,,,........ i think i have a faulty gauge
 
I do understand you've replaced the sensor, but what did you replace it with? The average motor trader will simply look up Rover V8 and it's anybodies guess what you will get! Sure it looks the same as the one that comes out and fits in the hole OK, but there are any number of different senders with varying electrical outputs according to what gauges are in the cabin. Theres a full range from '67 P5B all the way up to 2003 Discovery! Even one for a P6 is not foolproof - those for strip speedo cars and round dial cars will be different!

Chris
 
chris you may have found the prob for me......... i removed the series 2 round clocks in my series 1 ............replacing with bar type did not know about the range of senders........ bet thats the prob...... chris you and the guys here are trees of knowledge........ how do i find the correct sender? oh oracle of much roverness :p
 
Well therein lies a problem I can't answer! Before I put up the last post I had a careful read of the manuals. Sometimes they will give the resistance vs temperature range - but the P6 ones don't! I reckon we need a Lucas parts book, or give someone like Ian at Rover-Classics a ring - he may actually know! (but he's on holiday this week).

I guess the first thing is to talk to your local motor factor, explain the problem and see if you can get them to spend a bit of time on the problem instead of just trying to get you out the door with whatever they have on the shelf.

I think you said the fuel gauge works as it should and the reading (more or less) reflects the truth? If so that eliminates the voltage stabiliser, if not, that remains a possibility.

Chris
 
You must log in or register to reply here.
Back
Top