156 ts 'pops' when starting - HELP!!!! - Alfa Romeo Forum
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156 ts 'pops' when starting - HELP!!!!

This used to happen very occasionally before my car got some much needed tlc at the garage last weekend but now if i start my car after its sat for a while or overnight the engine pops on starting it up and it doesn't want to rev.

it goes away after a couple of mins and drives fine normally although i have noticed if i try to give it some it on approch to the motorway i cant get over 4500rpm and have to change gear (2nd to 3rd gear particularly)

at the weekend i replaced

N/S/F wheel bearing
coolant temperature sensor
oil filter

Please can someone shed some light on my frustrating and somewhat embarrasing situation


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New MAF is the default answer, cheaper solution is if you can find friend with same MAF and try some temporary swap to see if things goes better.
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Yep, mine did that until I changed the MAF.
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Absolutely 100% MAF.

Make sure you get a genuine Bosch replacement.
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Sounds like two different problems there.
The not pulling past 4500rpm is probably MAF sensor as mentioned.

Popping on starting could be a leaky injector.
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(Post Link) post #6 of 6 Old 12-02-10 Thread Starter
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thanks guys i'll have another look at it over the weekend and report back
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