KV engine-what does this sensor control?? - Page 2

BIGGYIN · 17-02-11, 06:32 PM

Thanks,for all you replies.

Next day off,I'll have a play around and let you know what I find?

Sandro · 17-02-11, 06:55 PM

Quote:

Originally Posted by msh

Only part connected to KV engine that could be called "ECU" is that small control unit, which controls ISV. Probably that sender is for it. For temp gauge and light should be the one which is on top - looks very familiar, the same as on B3 I4 engines.

You are right! Somehow through years all units what controls something on engine - everybody calls "ecu"...

ovalking · 17-02-11, 07:05 PM

The arrangement on the KU engine looks exactly the same - wire is the same colour.

Having had a quick look in my Haynes and Bentley manuals, I'm none the wiser.

Injection and ignition systems use the MFTS (above it).
Temp gauge sender is on rear of cylinder head.
Thermotime switch for CSV is in radiator.

This single connection doesn't seem to get a mention.
It could be for the ICU (as previously stated, there is no ECU)

BIGGYIN · 17-02-11, 07:11 PM

It's got me,scratching my head.

I'll have to,do some research.
I was wondering,if it could have anything to do with my high idle?(Shooting,in the dark.)

4v6 · 17-02-11, 07:35 PM

Temp gauage as per 20vcqdrivers post.

The clue being its earthed thru the block.

Eddy · 17-02-11, 07:37 PM

Its something to do with the ISV valve,
If I unplug it with the engine running the idle drops, but if i plug it back in nothing happens untill the ignition is turned off then on again.

Top sender is for the temp gauge.

BIGGYIN · 17-02-11, 07:58 PM

Went out and checked mine.
Take lead off and engine doesn't start.
Pushed it back on and engine wouldn,t idle.
Played around alittle more and idle high.(1100.)

20vcqdriver · 17-02-11, 08:08 PM

OK. Looked again with my glasses on

and it's actually sensor N10. connected to the idle stabilisation unit J142 pin 13/T. used to determine isv operation during cold starting/warm up phase.
Hope this helps

BIGGYIN · 17-02-11, 08:18 PM

Quote:

Originally Posted by 20vcqdriver

OK. Looked again with my glasses on

and it's actually sensor N10. connected to the idle stabilisation unit J142 pin 13/T. used to determine isv operation during cold starting/warm up phase.
Hope this helps

Thanks alot,for that.

So,I might be barking up the right tree?Check some more and check sensor.(Might have to renew?)

20vcqdriver · 17-02-11, 08:56 PM

Quote:

Originally Posted by BIGGYIN

Thanks alot,for that.

So,I might be barking up the right tree?Check some more and check sensor.(Might have to renew?)

Clearing that corrosion off would certainly help

17-02-11, 06:32 PM	#11
BIGGYIN 4 ring whore! Classic Audi Club Member Join Date: Mar 2009 Location: Merseyside Posts: 7,976	Thanks,for all you replies. Next day off,I'll have a play around and let you know what I find? __________________ q90 B2 Type 85 - q90 B2 Type 85-PROJECT-ABY 20vt KARL. Injection is nice but I'd rather be blown

17-02-11, 07:11 PM	#14
BIGGYIN 4 ring whore! Classic Audi Club Member Join Date: Mar 2009 Location: Merseyside Posts: 7,976	It's got me,scratching my head. I'll have to,do some research. I was wondering,if it could have anything to do with my high idle?(Shooting,in the dark.) __________________ q90 B2 Type 85 - q90 B2 Type 85-PROJECT-ABY 20vt KARL. Injection is nice but I'd rather be blown

17-02-11, 07:58 PM	#17
BIGGYIN 4 ring whore! Classic Audi Club Member Join Date: Mar 2009 Location: Merseyside Posts: 7,976	What does it control? Went out and checked mine. Take lead off and engine doesn't start. Pushed it back on and engine wouldn,t idle. Played around alittle more and idle high.(1100.) __________________ q90 B2 Type 85 - q90 B2 Type 85-PROJECT-ABY 20vt KARL. Injection is nice but I'd rather be blown

17-02-11, 08:08 PM	#18
20vcqdriver 4 ring whore! Classic Audi Club Member Join Date: Dec 2007 Location: Wirral Posts: 3,910	OK. Looked again with my glasses on and it's actually sensor N10. connected to the idle stabilisation unit J142 pin 13/T. used to determine isv operation during cold starting/warm up phase. Hope this helps __________________ Coupe quattro 1986:-~450bhp + loooong list of mods! Audi A7 Bi-TDI SLine Black edition 2015 mapped to produce 600lb/ft torque! Audi S4 4.2 V8 cabriolet 2004:-

17-02-11, 07:05 PM	#13
ovalking Grown up member Classic Audi Club Member Join Date: May 2009 Location: Ipswich Posts: 272	The arrangement on the KU engine looks exactly the same - wire is the same colour. Having had a quick look in my Haynes and Bentley manuals, I'm none the wiser. Injection and ignition systems use the MFTS (above it). Temp gauge sender is on rear of cylinder head. Thermotime switch for CSV is in radiator. This single connection doesn't seem to get a mention. It could be for the ICU (as previously stated, there is no ECU)

17-02-11, 07:35 PM	#15
4v6 Ex Member Classic Audi Club Member Join Date: Dec 2007 Posts: 5,565	Temp gauage as per 20vcqdrivers post. The clue being its earthed thru the block.

17-02-11, 07:37 PM	#16
Eddy Grown up member Classic Audi Club Member Join Date: Feb 2011 Location: Glasgow Posts: 904	Its something to do with the ISV valve, If I unplug it with the engine running the idle drops, but if i plug it back in nothing happens untill the ignition is turned off then on again. Top sender is for the temp gauge.