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VEMS Community Forum

Technical => Wideband & EGT Gauge => Topic started by: chencho16000 on December 21, 2008, 11:44:20 PM

Title: Problem with EGT.
Post by: chencho16000 on December 21, 2008, 11:44:20 PM
The gauge that indicates the EGT don´t work. (Being connected).
When I disconnect the yellow connection flashes and then gave incorrect information (Being disconnected).
I think I have a problem with the genboard.
Does anyone know where you're going online and how to repair it?

Thanks.
Cencho.
Title: Problem with EGT.(2)
Post by: chencho16000 on December 22, 2008, 12:03:39 AM
By the way!
I appreciate the opportunity to put another EGT after the turbo, (I have an EGT in the exhaust manifold before the turbo), in order to have values for the purpose of installing the antilag etc. .....
I think it is a very important indicator for can make adjustments more exact.
So, I need to know how to connect to the genboard another EGT.

Best Regards!
Chencho.
Title: Re: Problem with EGT.
Post by: [email protected] on December 22, 2008, 02:44:02 AM
If you twist the two wires on the EGT cable from the VEMS together they form a thermocouple and should give a temperature reading of the air (or of your fingers).  If this isnt working then the EGT chip may be damaged - I've seen a couple of systems that have been killed by bad engine grounds as the high voltage routes through the EGT chip.

A repair would be a resoldering job, but it would be exactly the same work as fitting a second chip for the second sensor you'd like.

I wrote this: http://www.vems.co.uk/VEMS/egt.html

Title: Re: Problem with EGT.
Post by: Sprocket on December 22, 2008, 04:03:08 AM
Rob, I think I fried the EGT chip along with the others :D as my EGT input isnt working either.

Bad grounding is bad :D I had suspected that this is what caused the failure :-\
Title: Re: Problem with EGT.
Post by: chencho16000 on December 23, 2008, 02:09:00 AM
Hi guys!
One of the fried injfet is due to an accidental crossing of wires.
Is it possible that because of this, other components do not work?
For exemple, EGT?
Does anyone know if you have something in common these components?
The grounding?

Best regards.
Chencho.
Title: Re: Problem with EGT.
Post by: chencho16000 on January 10, 2009, 02:51:21 AM
For to install all necesary for a second exhaust gas temperature, in which genboard part will fit it?

Thanks.Chencho.
Title: Re: Problem with EGT.
Post by: [email protected] on January 10, 2009, 11:54:11 PM
If you've had problems with the integrity of the wiring then it is possible that something bad has happened to the EGT chip...
I have seen chips die because the engine grounding was not good, the egt sensor in the exhaust provided a ground path via the chip and it just went on to read noise or nothing at all.

Placing a second EGT needs a second EGT chip that sits on the bottom of the board, this shows the sort of work involes
http://www.vems.co.uk/VEMS/egt.html

Rob
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