Alfa 156 03 JTS misfire... - Alfa Romeo Forum
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Alfa 156 03 JTS misfire...

Hi,hope you can help, i have a 03 156 2.0 Jts that has been suffering from a misfire problem for a while now. Have already had the thermostat changed to cure the cold runnin issue but atill have a bad misfire with very poor fuel consumption. I have the fiatecu scan but no codes are shown, cleaned out the throttle body and plugs are sooted up i.e running too rich. Also tries parameter reset. Before i change the lambda/maf sensors is there any way of checking there operation.....voltage readings on ecuscan or with multimeter etc ??????

Also have been reading about dodgy ecu and inlet cam on the pre 03 models ???
Oh also i noticed on the fiat ecu scan that although the car idles at around 1000rpm from revcounter fiat ecu scan rmp shows 850 !!! ??
Any advice ???? Thanks

Btw prefer my twinspark to the jts !! :-)
tupps44 is offline  
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I've had the same problems on my JTS, although I had error codes. Still, changing the MAF and soldering the pre-cat lambda connectors solved any misfire/mixture problem.

JB1979 is offline  

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156 , alfa , jts , misfire

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