installing new luxe control panel for Volvo penta md22l

[thomashoebus]

I installed a luxe panel for my engine volvo penta md 22 l.
At Volvo they told me that I only had to plug out the old and plug in the new panel.

That was correct without having to install senders for oil pressure temperature , battery tension,... Everything works and now I can monitor the engine on every vital point. But the temperature meter never rises over 60 °c, it should read 90. At Volvo they don't know the answer.

I checked with another (same model) temperature meter and that gave also 60°c. So it could be that the sender is not compatible.

Does anybody knows what's wrong here.

Or how many ohms I should read on the sender at the engine and how many loss there may be in the wiring to the panel?

Or perhaps at how many ohms the meter of the panel should give 90°c

Because I checked the temperature with a regular thermometer and that gave 90°c

If I Should know the correct ohm values for engine and meter at normal temperature I can pinpoint the problem after testing with the mulimeter.

Thanks

Thomas

 

[Talbot]

get a new sender.

 

[HRvR]

I have the same problem with my luxe panel connected to a Volvo Penta MD2010C. The temperature meter never indicates more than 60-65 degrees C.

Directly after installment of the engine by the authorised dealer I asked him to check it. He checked the thermostat and it was OK. For some strange reason the warranty did not cover it and I had to pay for it.

Later on very gradually the tachometer indicated a lower max rpm. On delivery in 2001 it was 3400 rpm. Now the meter never rises over 2900-3000. But the 500 hrs service showed that the max rpm still is 3400 rpm.

About one year ago I met a fellow sailor with the same engine and also his tachometer had become a little bit lazy.

As the engine is OK, my dealer in the Netherlands is not very impressed by these minor problems.

Does anybody have an idea?

Hans.

 

[Ships_Cat]

We have a deluxe panel on the same engine and everything works purrfectly. My first suspicion, as another has said, would be the sender either faulty or the wrong one.

If the sender is not the original one or another has been recently fitted then as far as I know these engines are isolated from the DC ground (ours certainly is - ie block is not common with DC negative) so one may be advised to fit the correct Volvo part or proper equivalent rather than something found elsewhere and fits in the same hole. Is also a possibility that if your engine is isolated from DC ground that any other improper retrofitting of some other non isolated component to it in the past (say an alternator) may be causing the problem in the panel through shorting negative side of DC to the engine block (the engine block though isolated may be able to be implicated back through the earth protection fuse - but I would not know).

The above are just guesses as to possibilities as given the modular nature of the panel's gubbins inside it, it is pretty difficult to work out the actual electrical operation of it from the circuit diagrams.

I haven't checked on this specifically for this post but I also recollect that this engine has two temperature senders - one is called temperature check - so both should be checked.

John