Calibra EML with misfire under load

[Starleteer]

Hey guys,

I have a 1995 Calibra with the 2.0 8V engine (http://en.wikipedia.org/wiki/C20NE) and it seems to have a small fault between 1,500 to 2,000 RPM.

Whilst at this RPM in any gear, I experience intermittent losses of power now again, but from 2k onwards, it's fine.

Now I've conducted the paper clip fault code test and it only returned code 31 - "Engine RPM signal crankshaft sensor - No signal" which is probably because the engine wasn't running.

Does anyone know what I should try first? The idle is also a little lumpy which I'm sure is connected.

Thanks

[stevieturbo]

Disconnect the battery to clear any codes. Verify they are cleared then start again with a drive to see if any more pop up.

The fact the car is not running during your code reading is not the reason that code is there. Unless of course it absolutely is not running at all, and then there may be a possibility

[Starleteer]

Will do. Stupidly forgot to mention that this never happens when the engine is cold.

[Pumaracing]

Starleteer said:

Now I've conducted the paper clip fault code test and it only returned code 31 - "Engine RPM signal crankshaft sensor - No signal" which is probably because the engine wasn't running.

LOL - Gotta love it Fault codes created just by switching the engine off. That's my car buggered too then it seems. Maybe if I just keep pouring petrol in and keeping it idling 24/7......Hmmmmm. Nah - too expensive.

[seagrey]

check the coolant temp sensor,blue insert,two wire sensor tucked down next to the alternator,the plug on these had a habit of corroding and failing causing excactly the symptoms you posted.
you may need to change the sensor also as the corrosion works its way into the sensor.
If you unplug the plug you will possibly see that the terminals will be blue from corrosion.