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GO_HARD_AU
Fordmods Newbie
Age:27
Posts: 5
Joined: 02 Feb 2005
Location: Melbourne VIC, Australia
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 Posted: Mon Feb 07, 2005 3:12 pm Post subject: knock sensor? & crank angle sensor? |
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| ive got a AU. just wanna know what the knock sensor does and what the the crank angle sensor is? if these sensors are playing up, can they cause ur car to perform badly? just here to learn coz im not mechanically minded so any help would be great. |
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4.9 EF Futura
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Age:27
Posts: 8658
Joined: 05 Nov 2004
Location: Adelaide CBD SA, Australia
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| Posted: Mon Feb 07, 2005 3:25 pm Post subject: |
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A knock sensor is used to assess the level of spark advance in the timing... too much spark advance and the engine will knock... the knock sensor "listens" to the harmonics of the engine to sense for detonation (pinging, knocking). It then retards the timing (spark advance) in order to eliminate detonation... detonation kills engines.
Crank angle sensor provides a signal to EEC-V so EEC knows at what stage each piston is for any given revolution. EEC uses this information to time the opening of the fuel injectors and also for timing the spark of the coil.
A bit on pinging/knocking/detonation:
http://www.type2.com/library/engineg/ping.htm |
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GO_HARD_AU
Fordmods Newbie
Age:27
Posts: 5
Joined: 02 Feb 2005
Location: Melbourne VIC, Australia
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| Posted: Mon Feb 07, 2005 10:10 pm Post subject: |
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| thanks heaps for that link. |
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cartman02au
Fordmods Oompa Loompa
Posts: 42
Joined: 16 Nov 2004
Location: Central West NSW, Australia
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| Posted: Tue Feb 08, 2005 10:37 am Post subject: |
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I didnt think the newer Falcons had a knock sensor. The only Falcon I recall having one was the XF ULP EFI model.
I cant find anything in my various EA-EL manuals about one :S |
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4.9 EF Futura
Moderator
Age:27
Posts: 8658
Joined: 05 Nov 2004
Location: Adelaide CBD SA, Australia
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| Posted: Tue Feb 08, 2005 10:40 am Post subject: |
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EF and EL 6 cylinder definately did.
Unsure on AU 6 cyl or pre-EF.
None of the V8s had them. |
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cartman02au
Fordmods Oompa Loompa
Posts: 42
Joined: 16 Nov 2004
Location: Central West NSW, Australia
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| Posted: Tue Feb 08, 2005 12:39 pm Post subject: |
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| If EF-EL had them then the AU more than likely would. I still cant find anything in the EF/L Haynes manual about it nor can I spot it on the engine :S |
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arm79
Cruise Moderator
Age:29
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Location: Westside VIC, Australia
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| Posted: Tue Feb 08, 2005 2:27 pm Post subject: |
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EF and up has a knock sensor. Its tapped into the block under the inlet manifold between cylinder 4 and 5 i think.. Its on the back half of the block.
But previous to that, the last Ford to have them was the ULP EFI XF. |
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cartman02au
Fordmods Oompa Loompa
Posts: 42
Joined: 16 Nov 2004
Location: Central West NSW, Australia
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| Posted: Tue Feb 08, 2005 4:30 pm Post subject: |
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Thanks arm, I always wondered what that little plug was  |
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