Info on abs speed sensors?

[neoeire]

Hi all.
Got a problem with my abs speed sensor. Error code 36 meaning front right or rear left is giving issues.

But when i tried removing the front right via wd40 for a few days and being gental removing it. It just snapped. So im hoping that was the one giving issue as the abs light came on after i referb the front calipers.

My question is. For a 1990 rev 1, Sw20 turbo. Are all the abs sensors the same for every year of that model? And if so.
Are the hubs the same too?

Plus whats the difference in the front right and front left sensors.

Looking on ebay and thinking its cheaper to buy a hub with abs that the abs sensor.

If anyone has any tricks on safely removing the sensors without damage would be great.

[rgb]

that ebay price is unbelievable . i don't think you can get them out without breaking them. i spent hours and loads of wd40 the week before and still damaged it. i think the difference between left and right is where the wire is bolted to the car. £150 from camskill . f rip off but what can you do. take the bulb out of the abs warniing and get a mot.

[Peter Gidden]

take the bulb out of the abs warniing and get a mot.

Won't happen if MOT tester is doing his job properly. Most owners would rather not have bent MOT

ABS sensors are bonded in, so very rarely come out without getting destroyed.

Get hold of a 'scope, and check the traces from the suspect sensors to determine which one has gone down. Then either replace sensor, or as you suggest, replace hub/sensor with s/h unit.

[neoeire]

take the bulb out of the abs warniing and get a mot.

Won't happen if MOT tester is doing his job properly. Most owners would rather not have bent MOT

ABS sensors are bonded in, so very rarely come out without getting destroyed.

Get hold of a 'scope, and check the traces from the suspect sensors to determine which one has gone down. Then either replace sensor, or as you suggest, replace hub/sensor with s/h unit.

Scope? Multimeter or volt meter u mean

[Peter Gidden]

Scope? Multimeter or volt meter u mean

I mean an oscilloscope. So the waveform from each sensor can be inspected in the workshop.

[neoeire]

Scope? Multimeter or volt meter u mean

I mean an oscilloscope. So the waveform from each sensor can be inspected in the workshop.

Not a chance of that happening. Is there any chance a volt meter would work? Say reading the resistance or anything lol

If not then ill just replace what i broke and hope.
And if abs light still on then only one sensor left.

Stands to reason it will be the front right as the light came on right after i rebuilt the front callipers.

Plus i think someone said i could check my o2 sensor with a meter... Reading for that would be great...

Thanks all for the quick replys

If anyone knows if a meter could help and readings i would be looking for please feel free to post.

[Peter Gidden]

Yes, you can test the resistance.

Should be between 0.9 and 1.5K measured at the plug terminals.

If not as above, onbviously replace. Bear in mind it is possible to pass above test, but fail waveform amplitude (albeit unlikely).

[neoeire]

Yes, you can test the resistance.

Should be between 0.9 and 1.5K measured at the plug terminals.

If not as above, onbviously replace. Bear in mind it is possible to pass above test, but fail waveform amplitude (albeit unlikely).

Thank u very much.

[neoeire]

Yes, you can test the resistance.

Should be between 0.9 and 1.5K measured at the plug terminals.

If not as above, onbviously replace. Bear in mind it is possible to pass above test, but fail waveform amplitude (albeit unlikely).

Thank u very much.

Is that for the abs sensor or o2?

[Peter Gidden]

Yes, you can test the resistance.

Should be between 0.9 and 1.5K measured at the plug terminals.

If not as above, onbviously replace. Bear in mind it is possible to pass above test, but fail waveform amplitude (albeit unlikely).

Thank u very much.

Is that for the abs sensor or o2?

???

ABS sensor.

[neoeire]

Thank u very much.

Is that for the abs sensor or o2?

???

ABS sensor.

Thats great. Would u know the values of resistance for checking the o2 sensor?

[Peter Gidden]

Would u know the values of resistance for checking the o2 sensor?

Not possible since it doesn't have an internal resistance. (Well it does, but since it's infinite it's not much use for testing purposes).

Either a 'scope or analogue voltmeter is needed. With engine running, hold about 3000rpm and look for 8 swings from 0V to 0.8V in 10 seconds.

[rgb]

have you tried resetting the abs light and clearing the code.

[2mad]

Hi, as stated you can resistance test the sensors to find out which one is faulty.
Top tip. .
My drivers side rear came back as open circuit (no resistance), so I cut and removed the wiring 5cm from the sensor and tested the sensor itself, it came back within spec working fine . I then tested the wiring and it came back as no continuity, so I replaced the wiring and 5 years on its still working fine .

Kev.

[neoeire]

have you tried resetting the abs light and clearing the code.

I have tried that... By shorting tc and e1 with the wire unplugged in bonnet, then 8-12 brake pedel within 3 sec but nothing happen. (no abs light flashing really fast at all, just the 36 code)

Also tried pulling the ecu fuses and battery for over 5 min and light blinked on after acc key position.

So i assume the error is right. Just going to test the rear sensor today with meter and see what i get.

[rgb]

it took me about 5 times to reset the code. it matters which order you turn on the ignition and connect the wires. spend 5 minutes trying to do it . i can't remember which order. but you should get constant flashing even if you still have errors. if somethings still wrong the light will come on again.

[neoeire]

Can anyone confirm if all the hubs and abs sensors are the same in the sw20 turbo and non turbo models across all the years? 90-98 i think last model was?

I have a 90 turbo and checking junk yards and ebay at mo.

Eg. 92 n/a hubs with abs, 95 turbo hubs with abs are some of the cars i have found.

[neoeire]

Anyone?

[Kinsy]

Turbo hubs are bigger than N/A ones (on the rear, fronts will be the same), and as stated, removing ABS sensors is pretty much impossible from the hubs so I doubt you'd be able to retrofit one.

[neoeire]

Turbo hubs are bigger than N/A ones (on the rear, fronts will be the same), and as stated, removing ABS sensors is pretty much impossible from the hubs so I doubt you'd be able to retrofit one.

Yea i tried with my front right. So im good to swap my front right hub for any mr2 hub. But if the rear left is done. It needs to be a turbo model of any year.

Thanks mate. Hopefully i get this done quick. Miss my car on the road and need this mot.