MY05 Liberty Hard to Start

Posts specific to the 2.0 litre Turbo engine

MY05 Liberty Hard to Start

Postby SHIZNT » Wed Jun 04, 2014 11:02 pm

Hey guys, fairly new to the forums. I previously owned a moderately modified MY99 WRX and have recently done the transition to a MY05 Liberty GT Wagon which has been a bit of a nightmare.

When I first purchased the car it had issues where it would constantly stall, idle was erratic and fuel economy was quite poor. I took it back to the dealership and they ultrasonically cleaned the injectors, cleaned the AVCS solenoids, preformed an upper engine clean and found the vacuum hose for the idle step up was not connected.

Car no longer stalls, idle is spot on.... but now there is a new problem :( The car doesn't like to start when it is warm! The mechanic at the dealership initially thought it was just the upper engine clean causing the start issue and it would clear up after driving it for awhile but its been a month. He has also tried changing the oil, fuel pump and fuel filter but the problem still remains.

Anyone has any ideas or experienced this before?

Car starts fine stone cold, starts fine straight after driving but requires 2-3 cranks if its left to sit for an hour or two.
User avatar
SHIZNT
 
Posts: 65
Joined: Sun Mar 09, 2014 2:59 pm
Location: Western Suburbs, Melbourne
Car: MY05 Liberty GT Wagon 2.0T

Re: MY05 Liberty Hard to Start

Postby dr20t » Thu Jun 05, 2014 12:07 am

Welcome

Try priming the fuel pump before cranking and see what this does.

You prime it by turning the key to accessories (reds) and waiting until you hear the fuel pump prime then stop (1-2 seconds this should take to prime - another good way is to wait for your speedo and tacho needles to sweep, come back then stay on). Then crank and see what happens.

If it does the same thing then report back

Mick
Addicted to corn juice....

My FrankenStien build thread here: viewtopic.php?t=14137
User avatar
dr20t
 
Posts: 4191
Joined: Sun Oct 23, 2011 10:43 pm
Location: South West Sydney NSW
Car: 04 Liberty GT Auto
Real name: Mick
Profile URL: viewtopic.php?t=14137

MY05 Liberty Hard to Start

Postby Sean82 » Thu Jun 05, 2014 12:35 am

dr20t wrote:Welcome

Try priming the fuel pump before cranking and see what this does.

You prime it by turning the key to accessories (reds) and waiting until you hear the fuel pump prime then stop (1-2 seconds this should take to prime - another good way is to wait for your speedo and tacho needles to sweep, come back then stay on). Then crank and see what happens.

If it does the same thing then report back

Mick


This

Mines exactly the same. Fires first time cold or within about 30 mins of being stopped, but that 1-2 hr bracket it takes a few times to kick over.
Current: MY04 LGT 5EAT Wagon
Previous: MY11 Forester S-Edition VF52|ID1000s|Stuff|E85|12.9s @ 106
User avatar
Sean82
 
Posts: 459
Joined: Tue May 14, 2013 10:44 am
Location: Sydney
Car: MY04 GT with JDM GRB EJ207 swap
Real name: Sean

Re: MY05 Liberty Hard to Start

Postby SHIZNT » Thu Jun 05, 2014 10:00 am

dr20t wrote:Welcome

Try priming the fuel pump before cranking and see what this does.

You prime it by turning the key to accessories (reds) and waiting until you hear the fuel pump prime then stop (1-2 seconds this should take to prime - another good way is to wait for your speedo and tacho needles to sweep, come back then stay on). Then crank and see what happens.

If it does the same thing then report back

Mick


I'm in the habit of waiting for the fuel pump to stop priming before starting the car. Would always wait for the Walbro to stop whining in my old WRX before I cranked it over.

Here a video of the issue.

Image
User avatar
SHIZNT
 
Posts: 65
Joined: Sun Mar 09, 2014 2:59 pm
Location: Western Suburbs, Melbourne
Car: MY05 Liberty GT Wagon 2.0T

Re: MY05 Liberty Hard to Start

Postby norbs » Thu Jun 05, 2014 8:12 pm

Has the ECU been flashed?? Maybe worth comparing your ROM with a stock one just in case someone's been fiddling. :?:
'05 Lib GT with a few mods :-)
norbs
 
Posts: 389
Joined: Mon Oct 09, 2006 2:11 pm
Location: Melbourne

Re: MY05 Liberty Hard to Start

Postby SHIZNT » Thu Jun 05, 2014 10:42 pm

Car has only had one previous owner whom probably traded it in because he was to old to drive it anymore and it has a full service history from Subaru Docklands. I don't think the tune has been played with.

I do have VAG COM cable and RomRaider for monitoring.
User avatar
SHIZNT
 
Posts: 65
Joined: Sun Mar 09, 2014 2:59 pm
Location: Western Suburbs, Melbourne
Car: MY05 Liberty GT Wagon 2.0T

Re: MY05 Liberty Hard to Start

Postby norbs » Sat Jun 07, 2014 1:13 pm

SHIZNT wrote:Car has only had one previous owner whom probably traded it in because he was to old to drive it anymore and it has a full service history from Subaru Docklands. I don't think the tune has been played with.

I do have VAG COM cable and RomRaider for monitoring.



Hi, only reason I suspected that because it seems temperature related and there are many temp. comp tables in the ECU (particularly cold start) that if fiddled with could cause this perhaps?? Does it occur in the same temp zone? RR will be able to tell you both coolant and intake temp prior to starting. Not sure if you can log things whilst cranking?? Could be handy.
'05 Lib GT with a few mods :-)
norbs
 
Posts: 389
Joined: Mon Oct 09, 2006 2:11 pm
Location: Melbourne

Re: MY05 Liberty Hard to Start

Postby dr20t » Sun Jun 08, 2014 9:28 am

Would need to pull the rom to see the timing and fuel temp compensations

But definitely makes sense if tune has been played with

Sticky injector always is a suspect too
Addicted to corn juice....

My FrankenStien build thread here: viewtopic.php?t=14137
User avatar
dr20t
 
Posts: 4191
Joined: Sun Oct 23, 2011 10:43 pm
Location: South West Sydney NSW
Car: 04 Liberty GT Auto
Real name: Mick
Profile URL: viewtopic.php?t=14137

Re: MY05 Liberty Hard to Start

Postby SHIZNT » Sun Jun 08, 2014 11:51 pm

I'm going to have a tinker with it tomorrow. I'm leaning more towards a possible bad coolant temp sensor as it only seems to happen when the car is warm.

Injectors were removed and cleaned so I don't thing its going to be a sticky injector, though I could be wrong. I might remove the Cam position sensors tomorrow and give them a clean as well and see if it makes any difference.
User avatar
SHIZNT
 
Posts: 65
Joined: Sun Mar 09, 2014 2:59 pm
Location: Western Suburbs, Melbourne
Car: MY05 Liberty GT Wagon 2.0T


Return to 2.0T engine specific

Who is online

Users browsing this forum: No registered users and 5 guests