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Discussion Starter #1
Hey guys

In the mornings when I start the 155, it takes first time, but the revs rise and fall between 1200 - 1900 rpm until the motors warms up, and if you try and pull away even when reving the motor a bit, it just cuts out. As soon as the motor warms up a bit it stops cutting out and you can drive it, but the revs continue to rise and fall at idle until the motor has warmed up properly. When the motor is warm the car runs perfectly, idles perfectly and everything else. Could it be the automatic choke?

Thanks. :)
 

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Hi, It could be a couple of things. Firstly the water temp sensor may be giving the ecu incorrect readings when the engine is cold, it is £10 to replace and sits on top of the thermostat.

http://homepage.ntlworld.com/jacksalfas/Forums/155 2.0 TS Thermostat.jpg

Another thing may be the idle control valve but this would not explain why it sorts itself out when warm, but as a general fault finding thing they can do with a clean out using carb cleaner etc :D

http://homepage.ntlworld.com/jacksalfas/Forums/155 2.0 TS Idle Control Valve.JPG
 

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Discussion Starter #3
AlfaJack said:
Hi, It could be a couple of things. Firstly the water temp sensor may be giving the ecu incorrect readings when the engine is cold, it is £10 to replace and sits on top of the thermostat.

http://homepage.ntlworld.com/jacksalfas/Forums/155 2.0 TS Thermostat.jpg

Another thing may be the idle control valve but this would not explain why it sorts itself out when warm, but as a general fault finding thing they can do with a clean out using carb cleaner etc :D

http://homepage.ntlworld.com/jacksalfas/Forums/155 2.0 TS Idle Control Valve.JPG
Thanks AlfaJack.

I took off the idle control valve, there are two holes underneath it, must I spray carb cleaner in the holes? I have got a spare water temp sensor which I have now fitted, so I'll see how the car starts tomorrow morning.

Thanks for your help.
 

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Not so sure from memory, I think it was a rectangular,hole jsut give it a good rinse out and see how it goes :)
 
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