11 replies to this topic

[grina05]

ive got a mates commodore thats stopped,will just idle no power.has codes po500,po342,po368 &po300

hes was driving along h/way an started missing,pulled over and would be ok,did this about 3 times till it stopped

im hoping some holden experts may have come across these before

some help would be appretiated, steve

[dattoman]

v6's are prone to throttlebody issues that require the TB to be replaced

 

P0500 Vehicle Speed sensor (open circuit)

 

P0342 RH bank intake camshaft position sensor signal (incorrect)

 

P0368 RH bank exhaust camshaft position sensor  (voltage high)

 

P0300 Engine misfire detected

 

 

http://www.tech-onli...127efc/3192.pdf

[grina05]

thanks dattoman,the r/h timing chain has failed

[Neils LX]

Timing chain first place to look. They stretch according to my mate from Holden

[Dr Terry]

Quite often an ECU re-flash will fix the problem.

 

I've seen many Alloytec V6s that throw CAS & CAM codes because the timing chain has stretched slightly. They don't stretch far enough to rattle but the ECU can see the variation. Apparently the original program was too sensitive to this issue, so they've released another program with more tolerance in this area. Try that first, it is a lot cheaper than replacing timing chains etc.

 

Holden are not alone with this problem, many other cars (including some Toyotas) suffer the same problem.

 

Dr Terry

[mitchg]

^^ this.

Happened to my grandfather just after he bought his. Thankfully it was under warranty.

[grina05]

thanks guys,i replaced the chains 2yrs ago(done about 100.00k since) when i pulled the r/c off the chain wasnt on the cam gears

ive done a leak done test on it an doesnt appear to have bent the valves.i still need to pull timing cover off an see wat damage its done in there

[grina05]

an mello92,i dont think it was serviced very often when i 1st seen it.as theres black carbon shit everywhere

and its still everywhere

[rodomo]

I've seen 1 snapped chain doing roadside service and also the oil gauze for the cam timing blocked due to lack of service.

[grina05]

ive pulled the cover off,the tensioner is seized compressed,the plastic guide the chain rubs on has come away from main guide and rapt itself around bottom gear

(opposite the tensioner guide)

were abouts is the gauze for the valve timing