someone must know the answer
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Scooby Regular
Joined: Dec 2001
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just fitted magnex downpipe,the new pipe had 2 threaded holes in it
the one at the very top i didnt need so i made a blank and welded it up,the second one further down i needed to use but the sensor thingy didnt clamp up correctly on investigation i found the standard exhaust had a seat for it to seal on, the magnex just had a straight through hole which i had to blank off for now,any way the question i want to ask is is it safe to run with it disconnected and what does it do?seems ok with out it but would like to understand the workings of it all ....buy the way the jobs
not easy? MY94 wrx import
the one at the very top i didnt need so i made a blank and welded it up,the second one further down i needed to use but the sensor thingy didnt clamp up correctly on investigation i found the standard exhaust had a seat for it to seal on, the magnex just had a straight through hole which i had to blank off for now,any way the question i want to ask is is it safe to run with it disconnected and what does it do?seems ok with out it but would like to understand the workings of it all ....buy the way the jobs
not easy? MY94 wrx import
Scooby Regular
Joined: Oct 2000
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The top hole is for the Exhaust temp probe.
The lower one is for the Lambda sensor for UK cars,you lambda should screw in your manifold!!!!
The car will run with the lambda missing but it wont be able to tell the ecu and measure what Air/fuel ratio you are getting.
I thougth all imports had the exhaust temp probe at the top????
Mine has!!
My Lambda does up flush so you cannot screw it up too much.
Hope this helps
Darren
The lower one is for the Lambda sensor for UK cars,you lambda should screw in your manifold!!!!
The car will run with the lambda missing but it wont be able to tell the ecu and measure what Air/fuel ratio you are getting.
I thougth all imports had the exhaust temp probe at the top????
Mine has!!
My Lambda does up flush so you cannot screw it up too much.
Hope this helps
Darren
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Joined: Mar 1999
Posts: 3,938
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From: Swindon
Your lambda sensor is in the exhaust headers on the drivers side. The top hole is for the lambda sensor and the lower smaller hole is for the catalytic converter temperature sensor which is not needed to run the car and can be removed.
Early cars such as yours suffered from lambda sensor degradation and eventual failure, it woiuld probably pay you to install it into the top position of the downpipe ... depending on mileage etc it probably needs replacing right now in any case. A tip. the "correct part" is very expensive, get the UK equivelant and extend the leads uing the cable loom extension fitted to the old sensor, you should then find that it will fit into the top position and the cable will just reach to the mating connector. Don't be tempted to install a cheap sensor ... the Subaru article has a slightly different response which suits the ecu.
Bob
Early cars such as yours suffered from lambda sensor degradation and eventual failure, it woiuld probably pay you to install it into the top position of the downpipe ... depending on mileage etc it probably needs replacing right now in any case. A tip. the "correct part" is very expensive, get the UK equivelant and extend the leads uing the cable loom extension fitted to the old sensor, you should then find that it will fit into the top position and the cable will just reach to the mating connector. Don't be tempted to install a cheap sensor ... the Subaru article has a slightly different response which suits the ecu.
Bob
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