Hi,

I'd like to know if there is a way to test the coils, and the probe...

If so... How..?

Thanks in advance!

You can test the lambda probe with the engine running, using a voltmeter.

You can test the lambda probe with the engine running, using a voltmeter.

Just did a quick search :

Once hot, Lambda sensors transmit a DC voltage of 0.8 volts when detecting a rich mixture, or 0.2 volts when detecting a weak mixture. Therefore, when the E.C.M receives a voltage of 0.8, it weakens the mixture, and when it detects 0.2 volts, it enriches the mixture. The signal produced by a good sensor, which is operating fault free, should constantly switch between 0.2 to 0.8 volts when operating at normal temperature.

I don't know yet if those values are the same on all lambda probes...

And for the coils, here's what I found :

Coil Test - Testing Your Ignition Coil - Coil Resistance Test - How To Test Your Ignition Coil With an Ohmeter

Ignition System Troubleshooting

Now, I need to find the wiring diagrams...

Hope it helps someone...

all narrow band probes will have roughly the same voltage range, but i doubt a voltmeter will react quickly enough to show it working properly anyhow

The voltmeter figure I've seen for a healthy probe is 0.7v, which seems high for one switching equal times 0.2 and 0.8 (Would be 0.5) but if you're sitting on one end of the scale then you've got a cylinder down or a duff probe.

Would anybody have a tip to get the lambda probe of the exhaust manifold..?

I sprayed some WD40, but it's no help for the moment... Need to wait for the liquid to penetrate...

It looks like... glued, stuck, soldered to the manifold... :\

Would anybody have a tip to get the lambda probe of the exhaust manifold..?

I sprayed some WD40, but it's no help for the moment... Need to wait for the liquid to penetrate...

It looks like... glued, stuck, soldered to the manifold... :\

Changed mine a couple of weeks a go. I agree, a bit of a basstid to get out!!!

Just make sure you have a good spanner on it that won't slip. Then just pull hard but constant on it. Don't bang or jolt the spanner in case you snap the sensor in there. I'm 15 stone and I was pulling myself under the car :eek: A couple of goes though and she came loose

Use "PlusGas", not "Water Dispersant 40" to start with. Then ideally use an open-ended or 6 point rather than 12 point ring spanner.

Looks like the WD40 did the trick! That and a real spanner, open-ended. And it's a 22mm, if someone else is looking to change his and don't know the size!

Anyway, It did not fix my problem... Gets better, but still not driveable...

Thanks all for your help!