Oil pressure transmitter

Technical advice Q&A

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Bernie2015
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#1 Oil pressure transmitter

Post by Bernie2015 » Wed Sep 26, 2018 1:47 pm

Hi All,
I just bought an oil pressure transmitter/transducer part number C15474ES for a 4.2 block but the thread isn't correct. Has anyone else had problems like this? The diameter of the new transmitter is slightly larger that the part that came out and wont fit into the block. I don't know what the exact thread in the block should be, is there any way of finding out? Many thanks
Bernie 1966 S1 OTS

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mgcjag
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#2 Re: Oil pressure transmitter

Post by mgcjag » Wed Sep 26, 2018 2:24 pm

Hi Bernie....is this an e type block or xj6....i know there was some mismatch on your numbers....the new part number you have is the correct one..but what filter head do you have fitted....think xj6 have a different thread on the transmitter....as a rough guide they can be 5/8unf or 1/8ntp....the dia of the ntp is approx10mm the unf 16mm............Steve
Steve
1969 S2 2+2 & Building a C type replica

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Bernie2015
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#3 Re: Oil pressure transmitter

Post by Bernie2015 » Wed Sep 26, 2018 2:40 pm

Its a 7Exxxx-9 block so correct, oh it were that easy!
Bernie 1966 S1 OTS

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lopena
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#4 Re: Oil pressure transmitter

Post by lopena » Wed Sep 26, 2018 4:11 pm

Bernie:

You obviously have the correct block, but the issue is: do you have the correct oil filter head attached (there are several versions and they were interchangeable to some degree). I think you should have a Tecalemit FA2119 if I’m not mistaken...someone please correct me if I am.


Alan
N.J.

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Bernie2015
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#5 Re: Oil pressure transmitter

Post by Bernie2015 » Wed Sep 26, 2018 4:48 pm

Im a bit confused, the transducer unit screws directly into the screwthread in the block
Bernie 1966 S1 OTS

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mgcjag
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#6 Re: Oil pressure transmitter

Post by mgcjag » Wed Sep 26, 2018 5:24 pm

Hi Bernie.....do you have a service manual.......the oil pressure transmitter screws into the oil filter head....are you talking about the pressure switch that operated the red light on your speedo...i know early cars have them.. not sure of the year.....Steve https://www.sngbarratt.com/uk/#!/Englis ... 30f95745e6
Steve
1969 S2 2+2 & Building a C type replica

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Bernie2015
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#7 Re: Oil pressure transmitter

Post by Bernie2015 » Wed Sep 26, 2018 5:41 pm

This is a transducer oil pressure on one side and sends an electrical signal to the pressure gauge on the other I thought. Does it not fit directly into the block?
Bernie 1966 S1 OTS

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lopena
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#8 Re: Oil pressure transmitter

Post by lopena » Wed Sep 26, 2018 8:26 pm

Bernie:

The oil pressure sending unit you bought (C15474ES) does NOT screw into the block directly but rather into the top of the alloy Tecalemit filter head (which, in turn, holds the oil filter canister). The filter head resides on the right side of the block directly under the carbs.

Alan

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Bernie2015
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#9 Re: Oil pressure transmitter

Post by Bernie2015 » Wed Sep 26, 2018 8:38 pm

Does this send a signal to the oil pressure gauge on the dash?
Bernie 1966 S1 OTS

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lopena
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#10 Re: Oil pressure transmitter

Post by lopena » Wed Sep 26, 2018 8:46 pm

Yes.

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Bernie2015
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#11 Re: Oil pressure transmitter

Post by Bernie2015 » Thu Sep 27, 2018 3:52 pm

Fits like a glove - very grateful for the advice thanks
Bernie 1966 S1 OTS

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lopena
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#12 Re: Oil pressure transmitter

Post by lopena » Thu Sep 27, 2018 5:19 pm

Bernie:

Glad to hear it all worked out.

Your fellow forum members are here to help, so don’t be shy about asking more questions in the future. There isn’t a single problem that you will face that hasn’t already been solved by someone on this forum.

Cheers,
Alan
N.J.

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Bernie2015
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#13 Re: Oil pressure transmitter

Post by Bernie2015 » Thu Sep 27, 2018 5:28 pm

Thanks - its reassuring to see oil pressure registering on the gauge at last!
Bernie 1966 S1 OTS

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