Electrical problem 940

[Laird Scooby]

Originally Posted by Ammorack

Okay, so that ECT is way out and sends wrong information to pcm?
And purchasing a new ECT is the next step, right?
I don’t have any such resistors and capacitors.
Yeah, it hasn’t triggered CEL yet.

It appears that way. It's not so far out that it will give the result Nutco was suggesting by unplugging it, it hasn't triggered Limp Mode yet, just running excessively rich.

Hopefully the 3000rpm thing is purely down to flooding/overfueling.

When yuo get the new sensor, if you loosen the old one with a spanner you should be able to spin it out with your fingers and spin the new one in just as quickly. That should minimise any coolant loss then tighten it up once you've spun it in as far as you can with your fingers.

Don't put anything on the threads, it's a self-sealing thread so no need for anything.

Silly idea but it might work, try loosening the existing sensor and retightening a few times then recheck the resistance, it might clean some corrosion between the head and the sensor.

[Ammorack]

Originally Posted by Laird Scooby

It appears that way. It's not so far out that it will give the result Nutco was suggesting by unplugging it, it hasn't triggered Limp Mode yet, just running excessively rich.

Hopefully the 3000rpm thing is purely down to flooding/overfueling.

When yuo get the new sensor, if you loosen the old one with a spanner you should be able to spin it out with your fingers and spin the new one in just as quickly. That should minimise any coolant loss then tighten it up once you've spun it in as far as you can with your fingers.

Don't put anything on the threads, it's a self-sealing thread so no need for anything.

Silly idea but it might work, try loosening the existing sensor and retightening a few times then recheck the resistance, it might clean some corrosion between the head and the sensor.

This one here, will this fit?

I’ll try that idea 👍🏻 Hopefully I don’t break it.

[Laird Scooby]

Originally Posted by Ammorack

This one here, will this fit?

I’ll try that idea 👍🏻 Hopefully I don’t break it.

Errr, pass? All i can see is a generic image of a sensor, no idea what the sensor is, what car it fits, what resistance it is etc so i can't say. If you can supply a part number i should be able to cross-reference it.

As long as you're careful with the loosen/tighten thing you shouldn't break it and if my theory is right that it's electrolytic corrosion between the head and sensor, it may well fix your problem, or at least reduce it so it's driveable after.

If you do manage to get the resistance down to about 2-2.5k between each terminal of the sensor and earth, pull fuse #1 for about 30s to a minute and refit to reset any of the learned fuel trims. Should in theory start and run more as it is meant to after that.

[Ammorack]

Originally Posted by Laird Scooby

Errr, pass? All i can see is a generic image of a sensor, no idea what the sensor is, what car it fits, what resistance it is etc so i can't say. If you can supply a part number i should be able to cross-reference it.

As long as you're careful with the loosen/tighten thing you shouldn't break it and if my theory is right that it's electrolytic corrosion between the head and sensor, it may well fix your problem, or at least reduce it so it's driveable after.

If you do manage to get the resistance down to about 2-2.5k between each terminal of the sensor and earth, pull fuse #1 for about 30s to a minute and refit to reset any of the learned fuel trims. Should in theory start and run more as it is meant to after that.

Sorry for late reply, ate some good beef

It’s still 9000ohm
Here’s the OEM number

[Laird Scooby]

Can you post a link to the item you're suggesting please?

[Ammorack]

Originally Posted by Laird Scooby

Can you post a link to the item you're suggesting please?

https://www.ipdusa.com/products/6210...ure-ect-sensor

[Laird Scooby]

Originally Posted by Ammorack

https://www.ipdusa.com/products/6210...ure-ect-sensor

Yes, if you check the Bosch part numbers i provided earlier, that was one of them 0 280 130 069.

As long as it is the Bosch sensor, for some stupid and unknown reason, the Bosch ECUs are particularly sensitive to non-Bosch sensors.

[Ammorack]

Originally Posted by Laird Scooby

Yes, if you check the Bosch part numbers i provided earlier, that was one of them 0 280 130 069.

As long as it is the Bosch sensor, for some stupid and unknown reason, the Bosch ECUs are particularly sensitive to non-Bosch sensors.

Good, now I’ll buy it.
As for the noid light. There’s no tracking on it and it’s expected 14th April.
Now it’s a waiting game right?

[Laird Scooby]

Originally Posted by Ammorack

Good, now I’ll buy it.
As for the noid light. There’s no tracking on it and it’s expected 14th April.
Now it’s a waiting game right?

It is, i don't know how long IPD will take to deliver to you. Are there no shops where you are that would sell a couple of resistors? That would be a makeshift repair though.

[Ammorack]

Originally Posted by Laird Scooby

It is, i don't know how long IPD will take to deliver to you. Are there no shops where you are that would sell a couple of resistors? That would be a makeshift repair though.

There are shops that sell those. But i don’t really wanna be cutting open the harness