Jag xj12 sensor compatibility

I have a 1977 jaguar xj12 which is fitted with Bosch 0280100063 (lucas 73140a) and am struggling to find a replacement map sensor.

Are the other map sensors used on xj12's  such as 0280100123 (lucas 73152a) interchangeable?

it looks as though the ecu is common with both (0280001018) so would like to know what the difference is if any?

Hi Unknown,

would be great if you could follow our netiquette and sign with your firstname. Makes things more personal.

MAP sensor 0 280 100 123 is a type 3 MAP sensor used very early in Australia only. I would not recommend that as it will change your cars behaviour. You have a type 2 MAP sensor with full-load enrichment. Why don't you get it repaired? That is a matter of 1 week plus transport.

Apologies, my name is Chris and this is my first post to this excellent source of information.

Are there other people who repair them? I had found the link to Bosch repair site but the cost seemed very high.
If there are other people who repair them can you send me their contact details.

Hi Chris,

I guess you mean me. Yes I can repair all D-Jetronic MAP sensors with the exception of Vega and Isuzu where I do not have references. A 0 280 100 068 would be even in my stock. But I only do it for good friends not for business.

Mine is actually the A 0 280 100 063. The car starts and runs fine and then stalls when it gets to operating temperature. I assume the cold start injectors give it the correct mix to start, but anticipate i will need to check the whole system (fuel pressure, AAV etc.) when a new unit is installed

If you can help me it appreciated but completely understand its not why you created the site.

They do come up for sale on ebay occasionally, but I also plan to start a searching for people breaking old xj12's or the early xjs which i think used the same system.

Best Regards
Chris

Hi Volker.

My car is one of the earlier XJ12 models using the early MAP sensor 0280100063.

The later Map sensor was 0280100068

Are these MAP sensors interchangeable, ie will the later MAP sensor work with the earlier version of the ECU?

Used car breakers tell me they will, but would appreciate you advice before i fit the later part number?

Best Regards
Chris

Hi Chris,

unfortunaltely it does not fit. Otherwise I would have offered help with my 068 sensor.

Volker thanks for confirmation. I went to a jag breakers yesterday who had 6 of the 68 but none of the 63. I assume the 63 is the rarer one of the 2.

Is it ok to ask on this forum if anyone has one?
plan to do the same on the jaguar forums

Chris

Hi,

why buy a used one expensively where you do not know how long its diaphragm will last. Better to get yours overhauled and tuned with new diaphragm. So you really better go to Bosch and let them handle it. It is a pity that Brexit has made life more difficult. Bosch might charge addtl. for customs handling. But you have that same problem with anyone selling you a used MAP sensor from outside UK.

And before you throw away your old MAP sensor, I'd love to have one in my stock and can pay transport to you.

I contacted bosch who no longer will deal with an individual from the UK so you have to ship via a business / workshop. Post Brexit the shipper has to arrange all customs clearance etc so the 599 probably increases to circa 900 by the time you have paid everything (import duties, vat and freight fees).

Hi Chris,

Bosch does not deal with direct clients anywhere in the world. You always have to go to a local Bosch Classic workshop. But they get discounts to locally handle clients. At least that is what happens in Germany. And my price information on Jaguar MAP sensors is old.

Bosch should be able to import your MAP sensor to Germany, declare it properly to customs and declare export to UK again. UK will ask for increase in value due to repair and charge VAT and customs. Bosch Germany used to only charge an extended handling fee.

It was always clear that there would be a price tag on Brexit - I am afraid.

Hi Volker.
I am still struggling to locate the Map sensor 028010063 but plan to continue to search and try the international jaguar spares show next month, if i dont locate one by then i will have to go to Bosch and get the original unit repaired.

To get me mobile over the next 3 months a friend has offered me a spare (old part new) 028010068 sensor used on later engine numbers until i find the correct one, but I am unsure what impact this will have or if it will work with the earlier ECU (Lucas 3CU 83356A) that was originally paired to the 63 sensor.
Will the earlier Lucas 83356a ECU work with the 68 sensor (earlier ecu to later sensor)?

If not, he also has the ECU 83477B so i could update the ECU and the sensor which are compatible - I am assuming the later Ecu and later Map sensor will still work with the rest of the earlier d-jetronic components?

Any thoughts would be appreciated, just looking for options to try and get mobile.

Best Regards

Chris
 

Hi Chris,

it would be better to combine later ECU and later MAP sensor. I once had a 063 sensor and overhauled it. But I have given it away long ago.