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**MattF** · 2 August 2006, 19:15

Might make myself look like an arse with this, but I thought the knock sensor
controlled fuel pump timing, not turbo boost.

**Woodzie** · 2 August 2006, 19:28

Originally posted by chasharman

Q1. How easy is it to change the front crankshaft oil seal? Will I have to drop the sump after pulling off the bottom pulley?

Q2. Is there anyone out there that has a 2.4 TD engine out of the engine bay? If there is, is there any chance you could pull out the "knock sensor/crankshaft sensor". I am trying to find out what the sensor is actually sensing. Is it a proximity sensor detecting the teeth on a gear being driven? Or is it a knock sensor that detects an actual knock.

The reason I ask Q2 is that I fitted an engine that does not have the hole in the block for the sensor that sends a signal to the fuel injection pump. Because of this there is no turbo boost on my truck. I have put up with this for a year but the lack of power is getting me down now. I am looking for a way of fooling the sensor, but the timing has to be correct. Maybe some of you hardened DIY masters could shed some light on this sensor. I really can not get enough money out of my wife to get a new engine (unless there is a kind chap or chapess out there that wants to swap a short engine for a short ammount of cash........) Thanks in advance.

Tony is looking into doing my front crank shaft oil seal at the mo as part of a cambelt change

**Vagrant No2** · 2 August 2006, 19:38

Contact Jotto as he may have a bottom end from his 2.4 EFI for sale .

**Gamedawn** · 2 August 2006, 20:14

I'd be interested in the answer to Q1 as well. Mine is currently keeping the front crossmember from going rusty

but it's going to need sorting sooner or later.

**chasharman** · 2 August 2006, 20:56

oil leak

My oil leak is doing more than stopping rust, it is getting me banned from visiting anyone with a lovely new loc-bloc drive, ( sorry Mike). Everyone at work knows which spaces I have parked in, and I have been given my own space round the side now, he-he.
My excuses ammount to " I am only returning some oil back into the ground, so that future generations can dig it up when there is none left"...

**227angrydonkeys** · 3 August 2006, 00:40

a knock sensor detects detonation or pre ignition and then adjusts the timing in accordance. a crank angle sensor controls the ignition timing or in the case of a diesel , the fuel pump/ injectors. i think this is correct, certainly the case with petrol engines.

**NiftyNev** · 3 August 2006, 01:16

Crank seal requires removing all components associated with a timing belt change as well as the crankshaft gear. No need to remove sump. Make sure you order a seal to match your vehicles model and frame numbers because there was two different seals used during this period of production.

Crank angle sensor gets a signal from a protusion on number one con rod and controls timing etc through the ECU. Without this and the coolant sensor, which is also not on a 2L-T, it will never run properly.

Nev

**chasharman** · 3 August 2006, 12:37

much thanks

thanks for the replys guys, looks like another engine for me

.
at least I might not have to fix the oil leak now, might just replace bash plate with a large catch plate with built in sump and drain.

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