i have recently done a efi conversion on my s1 which i had loads of problems with and cut a lot of wires trouble is now once all wired up with in about 5 minutes of the engine running the gauge goes above the red i have changed the temp sender and cleaned the connectors what could it be anyone got any ideas

 

the feed for the sender is earthing out somewhere.

sean

 

but it does just go straight up when the engine is running it goes up slow takes about 5 minutes

 

aS ABOVE,ITS earthing somewhere.Regards,MICKY

 

is there a comon place where these earth out and how would i test it

 

if you follow the temp wire back you may of cut it by accident and its touching the body fella

 

i cant see it being an earth problem tho as if the keys are in the ignition and its on it will just go above the red but it will take about a minute to get there then when you start the car it will go into the red but it will take a good 5 minutes to get there could this still be an earth

 

Highly likey that the sensor is fugged. Before replacing though, remove the connector & clean using a suitable cleaner & maybe a little wet & dry or small wire brush. Replace connector to see if it makes any difference.

Andy

 

i have changed the temp sensor first and it did not work i even put a new connector on it

 

I can't see it being a short if it takes time to progressively work its way up. If it was the gauge would be up there in the red in about 20 seconds tops. I bet if you unplug it from the sender it doesnt move right - so theres no way it could be a short.

Which sender have you got? Round terminal or flat terminal?

 

spot on if i disconnet it then it drops down the sender is exactly the same colour as the old one which worked fine its a round terminal one

 

If it drops when disconnected and rises when earthed then i would say the electrical circuit is ok.

Have you got the thermostat in the correct way round?

 

yes the thermostat is fine the engine is not even getting hot and the fan kicks in normnal time about 10 minutes after running i just cant work it out

 

is it a new senser and where did you get it from fella

 

brand new

soverigns in harold hill i have a account with them

 

Your guage could be knackered.

Now being a series 1 it SHOULD have a flat terminal sender in there, ive read various stories about the later senders not working properly with the early instruments.

On one of my old mk1 orions i had a round terminal sender and that worked fine though, but for the few £ they cost i would get the proper sender and try that first, if not it must be your gauge.

 

its got to be worth a try but both the old and new one is a round terminal but as you said for what it costs might as well give it a go

 

alright fella if you pop round my house ive got the one i took off my old head you can try if not can you bring the car round so i can have a quick look at it

 

try putting a new wire from the senser to the back of the cluster as it could be the wire is too corrided causing high resistance fella

 

i am going to run a new wire some point this week if no luck then i will bring it to you


anyone know which wire it is, save me searching for it

 

yea its the wire you are plugging onto the sender

 

pmsl

 

cool beans fella give us a ring first fella i might not be in

 

pfffffft kids eh

 

comedian

what wire which goes into the instrument cluster

 

if you look at the back of the clocks you can trace the wire back to the pin on the clocks

 

so its the same colour as the sender end

 

Sounds complicated

 

doesn't it just

Yes the wire will be the same colour all the way through the loom. Off the top of my head im pretty sure its a Red/White wire.

 

yes its a red and white wire and it splits into 2 at the clocks and goes into differnt parts in the connector does anyone know why??????


does anyone have a wiring diagram for the back of the clocks to show what does what

cheers

 

it does what

Sounds like the wiring that end is the problem that wire shouldnt split off 2 ways