2003 JTS Idle problem?

Started by DAMO1A, November 24, 2015, 08:59:28 PM

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DAMO1A

I'm looking at a 2003 156 JTS for my son.  The owner says that it won't hold its idle and stalls when the car stops.  Has anyone experienced this and/or knows what the problem might be?
2015 Giulietta QV TCT
1990 Alfa Spider Series 4

colcol

Take it to an Alfa Romeo Independant and get it checked out, hard to diagnose on the forum, could be a malfunctioning Mass Air Flow Sensor or a dirty Throttle assembly, Colin.
1974 VW Passat [ist car] 1984 Alfa 33TI [daily driver] 2002 Alfa 156 JTS [daily driver]

DAMO1A

Thanks Colin.  I think that is the safest bet. 
2015 Giulietta QV TCT
1990 Alfa Spider Series 4

colcol

The JTS is also known for its camshafts wearing out, due to oil dilution, the lobes on the camshaft wear out, meaning the valves won't open enough, to get in enough petrol and air, this will be noticed in a loss of performance, in extreme cases the valves won't open enough on one cylinder causing a poor and rough idle and stalling.
It would require removal of the cam cover to check the camshafts, its a job for an Alfa Romeo Independant, Colin.
1974 VW Passat [ist car] 1984 Alfa 33TI [daily driver] 2002 Alfa 156 JTS [daily driver]