C4 1.6 HDi Engine swap - Common rail fuel pump question

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LeoBenz
Posts: 19
Joined: 31 Jan 2021, 12:47
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C4 1.6 HDi Engine swap - Common rail fuel pump question

Unread post by LeoBenz »

Hello, I recently got me a C4 with the 1.6 HDi engine (90 hp version)

Car has been very reliable, but two days ago, I had an unfortunate incident. The engine failed, leaving behind a huge oil trail. When I checked the engine, the coolant tank was black (oil mixed with coolant and leaked out by the pressure overflow tubes). The engine is pretty much toast (at the very least I need to replace the head gasked, of course that would also mean a lot of work to the head and block).

I found a used engine for cheap (with warranty). The engine version is the same, all plugs, tubes and accessories are exactly the same as the one in my car.

My question is: Does the fuel pump require coding to work in my car or will it work regardless. I know I have to reprogram the injectors, but I'm able to do that myself. Do I have to use the fuel pump in my old engine or can I just use the one that comes with the used engine?

TLDR: Is the Common Rail pump on the 90hp 1.6 HDi coded with the immobilizer system?

Thanks.
RichardW
Forum Treasurer
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Joined: 07 Aug 2002, 17:12
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Re: C4 1.6 HDi Engine swap - Common rail fuel pump question

Unread post by RichardW »

The immobiliser coding is in the ECU, so no need to worry about the pump. It will run with old injector coding, but may be a bit rattly.
Richard W