VZ LS1 Running rough (Stalling at idle and low RPM) inc. Codes

[MEESEN]

Hi guys

Car has been running terrible lately when in closed loop mode so changed o2s thinking it may be them but not the problem by the looks of it...

Was wondering if any of you have had any of the following problems and if so can you shed some more light on the solutions?

P0102 - Mass Air Flow Sensor Circuit Low Frequency (Assuming my maf is rooted so chucking another one in tomorrow too see how it responds)

Then there's these other codes

P0443 - Evaporative Emissions Control System Purge Control Circuit
and
P0645 - A/C Relay Circuit Malfunction

Whta do you guys think?


MEESEN

 

[Nicks VZ]

See the thread " How many litres per 100klm", and do the clean out mentioned there first, before you put a new MAF in, then check the evap for leaks. Have you done any work under the bonnet recently ?

 

[MEESEN]

Chucked a mates maff in it today, still have the same code and 0Hz reading from it,

Is there a related fuse maybe or a dodgy pcm possibly

 

[TazzI]

Chucked a mates maff in it today, still have the same code and 0Hz reading from it,

Is there a related fuse maybe or a dodgy pcm possibly

Has it always run like this since the LS1 conversion or only recently?

Wouldnt think the car would even run if pcm was dodgey?

 

[MEESEN]

Just started mate, after battery was left off over night and new o2s were installed, will check relays and fuses again just incase

 

[MEESEN]

Turns out too be a coincidence this has happened finally got some time today too sit doesn't and look over it properly...

Turns out it was a wiring issue, where the terminals for a fuse were split open and were not making contact, least it was an easy fix and only took a tiny bit of wire tracing too diagnose.