do all starlet turbos ep82 and ep91 have same lambda sensor

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Paul_JJ

Member +
I remember Texx was saying something about a universal cheap one off the ebay. Not sure which one, but I'm sure he can clarify. I need to replace mine I suppose, mine is probably still original 14 year old -) Also how do you know that it's failed?
 
R

Rev

Member +
Paul_JJ said:
I need to replace mine I suppose, mine is probably still original 14 year old -) Also how do you know that it's failed?
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Check voltage has been posted before I think these tests are also interesting regarding responsiveness of the sensor -
Most lambda sensors will cycle from rich to lean in about 50 to 100 milliseconds, and from lean to rich in 75 to 150 milliseconds. This is referred to as the "transition" time. If the O2 sensor is taking significantly longer to reverse readings, this too is an indication that it is getting sluggish and may need to be replaced.

Observing the sensor's waveform on a scope is a good way to see whether or not it is slowing down with age. If the sensor becomes sluggish, it can create hesitation problems during sudden acceleration.

eg. I we look at the dyno you posted before you accelerate you have 14.26 afr (.97)
you go leaner to 15.65 afr ( 1.065) is this a sluggish or normal o2 sensor given this exceeds narrowband o2 sensor capability of 15.4 ?
I dont see any hestitation in your dyno so performance wise this seems ok. I guess too much leaning would be sluggish and undesirable on boost.
 
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Frankieflowers

Frankieflowers

Member +
Rev said:
Check voltage has been posted before I think these tests are also interesting regarding responsiveness of the sensor -
Most lambda sensors will cycle from rich to lean in about 50 to 100 milliseconds, and from lean to rich in 75 to 150 milliseconds. This is referred to as the "transition" time. If the O2 sensor is taking significantly longer to reverse readings, this too is an indication that it is getting sluggish and may need to be replaced.

Observing the sensor's waveform on a scope is a good way to see whether or not it is slowing down with age. If the sensor becomes sluggish, it can create hesitation problems during sudden acceleration.

eg. I we look at the dyno you posted before you accelerate you have 14.26 afr (.97)
you go leaner to 15.65 afr ( 1.065) is this a sluggish or normal o2 sensor given this exceeds narrowband o2 sensor capability of 15.4 ?
I dont see any hestitation in your dyno so performance wise this seems ok. I guess too much leaning would be sluggish and undesirable on boost.
Click to expand...
Hello. I have a question. I am swapping a FTEfrom a Glanza ep91 (1997) in a Corolla E11. I would like to know if the Corolla lambda is compatible with the FTW ECU.
 
RoyalDutchie

RoyalDutchie

Member +
SKINY said:
Yea it pops and bangs when your thrashing it on :) they are mapped a bit rich by Toyota as are all there turbo cars
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A bit may be an understatement ;) Should work if it is an one wire one, you can always cross-reference the oem numbers to be sure. They are narrowband anyways so not really perfect in the end.
 
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RoyalDutchie

RoyalDutchie

Member +
The glanza sensor is: (Seems to be the same as the starlet one)
89465-10020

In short you will be needing a different sensor, since getting a 4 wire to work with the ecu is going to be a major challenge by my knowledge(if it is even possible).
 
Frankieflowers

Frankieflowers

Member +
RoyalDutchie said:
The glanza sensor is: (Seems to be the same as the starlet one)
89465-10020

In short you will be needing a different sensor, since getting a 4 wire to work with the ecu is going to be a major challenge by my knowledge(if it is even possible).
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Here are the the sensors for the Starlet and Corolla: i want to know if the Starlet ECU will read the Corolla exhaust temp sensor as the Starlet. The OEM is different. The 4efte exhaust will go in the Corolla CAT. I had to bypass the FTE Cat.


Lambda

Starlet Lambda

Oxygen temp sensor

89465-10020

Exhaust temp sensor

89425-60150

Corolla Lambda

Oxygen temp sensor

89465-19745

Pre cat sensor

89465-19675
 
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Jay

Jay

Admin
Near sure the Corolla of that vintage uses the non-turbo 4-pin heated version which the 4EFE Starlets also use.

The turbo model uses a single wire probe, unheated, I'd be sticking with that as that's the signal the 4EFTE ECU will be looking for. Also you'll probably be using the 4EFTE catalytic convertor/downpipe and modifying the exhaust to fit it.

You can delete/ignore the cat convertor heat sensor but I wouldn't run without the lambda probe for too long. It's not healthy for the engine.
 
Frankieflowers

Frankieflowers

Member +
Jay said:
Also you'll probably be using the 4EFTE catalytic convertor/downpipe and modifying the exhaust to fit it.
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I didn’t receive the engine with the CAT. I will have to make the exhaust from the turbo down to my Corolla CAT. The oxygen sensor is on the fte exhausr after the turbo? If so I will have to buy one and adapt it to the custom exhaust starting from the turbo down to the Corolla cat.0DE2CE1B-F2CC-4CA0-99F5-6EBDC2CD386A.jpeg
 
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Frankieflowers

Frankieflowers

Member +
Hey guys. I don’t have the downpipe with Cat on the fte. I need to buy
Oxygen temp sensor 89465-10020 and put it in the custom downpipe that goes to my Corolla cat. Could you please tell me which sensor I should buy? The original DENSO Costs $170. Is it possible to buy a generic cheaper one? I found a few for 30 bucks but I want to be sure.
 
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