ST170 Engin light on

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Dec 26, 2009 | 01:53 PM

Pieter Erasmus

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St 170 Owner @ 330 000 km

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From: South Africa

ST170 Engin light on

ST170 - How do I switch off the engin light if I remove the catalytic convertor? (make it blind to the Engin Management System) I was led to believe that the

Cat only lasts 160 000km, My ST has done 295 000 to date.

Dec 26, 2009 | 02:57 PM

Glenn_

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From: Darlington county durham

im sure you cant do it mate. Does your car have a lambda sensor in front of the cat and a lambda sensor behind the cat.

Dec 26, 2009 | 06:29 PM

Pieter Erasmus

Thread Starter

St 170 Owner @ 330 000 km

Joined: Dec 2009

Posts: 10

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From: South Africa

Quote:

Originally Posted by Glenny Boy

im sure you cant do it mate. Does your car have a lambda sensor in front of the cat and a lambda sensor behind the cat.

According to the dealer its got a Pre and Post Catalyst Oxygen sensors, one before and one after the Cat...

Dec 26, 2009 | 07:17 PM

Glenn_

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From: Darlington county durham

Well if you have took the cat out the lambda sensor after the cat picks up exhausts arnt right so tells the ecu and brings the light on.

Dec 26, 2009 | 07:30 PM

Pieter Erasmus

Thread Starter

St 170 Owner @ 330 000 km

Joined: Dec 2009

Posts: 10

Likes: 0

From: South Africa

Quote:

Originally Posted by Glenny Boy

Well if you have took the cat out the lambda sensor after the cat picks up exhausts arnt right so tells the ecu and brings the light on.

Any knowledge on how to "lie" to the ECU to make the light go away? If I can locate the spec for the ranges for the ECU input - I can rig up a resister that would do the trick.

Dec 26, 2009 | 07:39 PM

~nomad~

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the only way is to take the bulb iirc. the lamba sensors have to be present and reading right.

Dec 26, 2009 | 07:45 PM

Glenn_

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From: Darlington county durham

Quote:

Originally Posted by Nomaderst

the only way is to take the bulb iirc. the lamba sensors have to be present and reading right.

Correct.

Modern cars you cant do anything to them nowa days.

ST170 Engin light on

ST170 Engin light on

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