Engine stalls

[AndyR]

Hi folks. My Astra has developed an engine stall. Starts up fine and runs reasonably well under power. But as soon as you back off power to come to a stop, the engine cuts out. 

I didn't think an automatic would do such a thing, but yep she is. I have changed plugs and coil pack. No difference. It does sound like there is a bit of a misfire on tick over. 

Any help or ideas would be greatly appreciated.  

TIA. Andy.

[AndyR]

Well after doing some research, I have discovered that it is a problem with the throttle body.  So later today its getting hauled off and cleaned out. If that doesn't cure the problem then I'll have to invest in a replacement. 

I will keep everyone posted on the results. 

[Vauxhall Owners Club]

that's probably the first place I would start Andy but also pay careful attention to any rubber hoses, vacuum lines and anything likely to draw draw unregulated air and cause a vacuum leak which may also cause similar symptoms

Let us know how you get on with it

[AndyR]

Well I removed the throttle body and gave it a good dowsing of carb cleaner. It was very Carboned up below the butterfly.  I'm going to give the EGR a clean out too. And hopefully it will be a good cure. 

[AndyR]

Well the clean up of throttle body improved the performance and the idling is a bit better. I have invested in a new fuel filter as apparently it can give the same symptoms that i am suffering with at the moment. So at some point tomorrow afternoon, i will swap them over and see how it goes. 

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