Electric oil temp gauge reading max when ignition is on

[jonathantennantbtinternet]

Can anyone direct me where to look to solve this fault. 

 

Thanks

 

Jon

[Jonathan Kay]

1. What sort of gauge? Is it switched with the water temperature?
2. Any recent work?
3. Other instruments working fine?
4. Do you have the relevant wiring diagram and a multimeter?

Jonathan

[David aka Blue7]

I had this on my CSR last year, in my case it was a faulty sender unit

[John Vine]

This depends on what model your 7 is, and what sender you have, but it could be you have a short to earth somewhere along your sender wire. 

JV

[jonathantennantbtinternet]

Sorry bit more info.

2005 Ex Acadamy, 1.6 k series. Everything else appears to work fine , it a new car to me and it's oil pressure not tempt. 

I do have a wiring diagram and mult meter

[Jonathan Kay]

Have a look at the wiring to the sender and any connectors: any visible damage?

Then remove the wire at the sender: what does the gauge now do? (Same thought as JV's.)

Jonathan

[jonathantennantbtinternet]

Cheers, where abouts would the sender be on the engine ?

[Jonathan Kay]

Deleted

[SM25T]

Under the front of the engine ... In the oil filter housing. Senders are notoriously unreliable. Many of us changed to a mechanical gauge with capillary hose. Costs about the same as a new sender ... And lasts more than a year !!