Member Since: 11 Jul 2021
Location: Australia
Posts: 3
Disco 4 2.7 fuel temperature sensor - restricted performance
I’ve recently had the following done:
High pressure fuel pump replaced
Both EGR vale’s done.
The backyard guy who did the fuel pump (never again) hadn’t hooked the fuel pipes up properly and diesel sprayed everywhere on the test drive for the EGR valves. The proper service guys fixed it up.
On the drive home the restricted performance error came up. I drove back and the code was for the fuel temperature. It showed -41 degrees . It drives normally but shows the error. He cleared it but half an hour later it came back.
They thought there may have been fuel damage to the temp sensor when the pipes let go. They’re saying that you can’t just replace the fuel temp sensor. But I see you can order such a part so maybe they just don’t want to. Can it be replaced without having to do the whole pump? Can it be disabled?
11th Jul 2021 5:23 am
ds23man
Member Since: 19 Jan 2013
Location: Ainum
Posts: 227
The temp sensor is in the fuel return pipe from the injectors. Maybe a broken wire or loose connection?
Member Since: 11 Jul 2021
Location: Australia
Posts: 3
Thanks. I have seen this part advertised. I can’t for the life of me see it in the engine bay though. I can see the top of the HPFP at the rear of the engine but can’t see where this part is. Does it plug in to the top of the pump or is it underneath?
11th Jul 2021 1:48 pm
ds23man
Member Since: 19 Jan 2013
Location: Ainum
Posts: 227
Citroen DS23IE
Audi A6 2.4 V6 Avant Quatro (1998)
Audi 80 2.6 v6 Cabriolet (1996)
John Deere 4240S
McCormick 323
11th Jul 2021 3:05 pm
aussiedisco4
Member Since: 11 Jul 2021
Location: Australia
Posts: 3
Thanks a lot ds23man, that’s it. I don’t know why the mechanic said it was part of the pump. Maybe he was confusing it with the 3 litre. Anyway I unplugged it (it was a grey connector actually) and started the car. Plugged it back in and restarted and the error disappeared. Maybe it just wasn’t seated correctly or something. Anyway fingers crossed it stays away.
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. It drives normally but shows the error. He cleared it but half an hour later it came back.
