Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.

New Posts Contact us

Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

2000 VS Ute struggling to start when cold

Andyp3

New Member
Joined
Nov 8, 2019
Messages
3
Reaction score
0
Points
1
Age
29
Location
Melbourne
Members Ride
2000 VS Commodore V6
Hey all,

I’ve got a VS Ute that’s struggling to start when cold. It can take 1-2 minutes of cranking when cold to start. Once it’s been running for a few seconds, if you turn it off and on again it fires up immediately. The engine runs perfectly once it starts.
I’ve replaced the plugs and leads, run injector cleaner through it, and done some long trips with premium 98 in it. Car has done 180,000kms.

Any suggestions what it could be? I’m thinking fuel pump, but not certain. Any tests I can do to check?
Thanks lads
 

losh1971

Well-Known Member
Joined
Jan 17, 2010
Messages
15,116
Reaction score
8,726
Points
113
Location
North Tas
Members Ride
VE Series I SS Ute
Could be a battery issue if its a V6. Mine did a similar thing, not 1-2 minutes though as that would have flattened the battery. Try charging the battery overnight and see if it improves.
 

commodore665

expat Saffa
Joined
Dec 30, 2011
Messages
2,843
Reaction score
2,232
Points
113
Age
52
Location
New Zealand via Cape Town
Members Ride
2005 SV6 & Alfa Romeo 156 V6
try cleaning the terminals on the battery , or as above charge over night .
 

immortality

Can't live without smoky bacon!
Staff member
Joined
Apr 15, 2006
Messages
18,760
Reaction score
9,316
Points
113
Location
Sth Auck, NZ
Members Ride
HSV VS Senator, VX s2 Calais S/C
Check the fuel pressure. Does the fuel pump prime when you turn the ignition on?
 

Andyp3

New Member
Joined
Nov 8, 2019
Messages
3
Reaction score
0
Points
1
Age
29
Location
Melbourne
Members Ride
2000 VS Commodore V6
Battery is fully charged, and issue is still persisting.
It’s thrown some error codes, which are 46 and 49.

I don’t suspect fuel pump as it runs perfectly once it’s started. The pump primes when the ignition is turned. I did a trip from Sydney to Melbourne in it last weekend - no issues there.

I’m thinking crank angle sensor, coil packs or dfi. Any suggestions to rule each of these out?
 

losh1971

Well-Known Member
Joined
Jan 17, 2010
Messages
15,116
Reaction score
8,726
Points
113
Location
North Tas
Members Ride
VE Series I SS Ute
Cam sensor and or crank sensor. Crank sensors can have some intermittent problems before failing altogether. Could also be a problem with DFI as code 46 is sometimes related to DFI. I'd be inclined to start with replacing the crank sensor as they eventually fail regardless and its only a matter of time before it does fail. It would be worth cleaning the DFI plug and checking the harness.
 

immortality

Can't live without smoky bacon!
Staff member
Joined
Apr 15, 2006
Messages
18,760
Reaction score
9,316
Points
113
Location
Sth Auck, NZ
Members Ride
HSV VS Senator, VX s2 Calais S/C
Probably should have led with the fault codes...
 

Trevor loves holden.

Well-Known Member
Joined
Jun 6, 2019
Messages
3,508
Reaction score
744
Points
113
Location
Victoria
Members Ride
vs commodore
When was the fuel filter last replaced? Try turning the key on and off a few times without starting it first, then start it and see if it starts quicker when cold.
 

Trevor loves holden.

Well-Known Member
Joined
Jun 6, 2019
Messages
3,508
Reaction score
744
Points
113
Location
Victoria
Members Ride
vs commodore
I’m thinking crank angle sensor, coil packs or dfi. Any suggestions to rule each of these out?

You can test the leads for spark with a tester when cold to see if they are sparking..
If it was any of these then it would play up while driving too, CAS fail when hot most times so I rule that out, could be a bad earth but sound more likely fuel pressure related.
 
Top