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major problem 

 

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 Post subject: major problem
Posted: Tue Feb 24, 2009 4:43 pm 
Getting Side Ways
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Joined: 15th Nov 2004

Ride: el wagon

Location: melbourne
VIC, Australia

Hi there folks, I am having a problem with my EF i6 (wagon)

I have: replaced the injectors, replaced the fuel pump, replaced the fuel filter, done an engine diagnostic and turned up code #411, which is "failed slow idle test" so replaced the ICU with another, retested and no code, so presumed fixed.

The problem I am having is that the engine seems to be hunting at idle. I have had a timing light on it, and the timing seems to be jumping around everywhere, from retarded to way advanced at idle. It seems to settle down at revs though. I have tried to do a base idle adjustment, but the engine wont idle with the ICU disconnected.

The rest of the problem is that it is hard to start. It might take up to 3 goes before it fires, and then smells really rich.

I have checked for vacuum leaks, inlet duct leaks, but I haven't vacuum tested the engine.

I am thinking it the problem may be ECU related, or maybe the cam angle sensor?

If anybody can offer ideas, please do so, as I am at my wits end :cry: :x
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 Post subject: Re: major problem
Posted: Tue Feb 24, 2009 5:30 pm 
Technical Contributor
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Age: 38

Posts: 4093

Joined: 20th Mar 2005

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Ride: 2.0 Turbo VW

Power: 142 rwkw

Location: Seaford State:
VIC, Australia

Have you cleaned or replaced the crank angle sensor? just above the harmonic balancer.

 

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 Post subject: Re: major problem
Posted: Tue Feb 24, 2009 5:31 pm 
Getting Side Ways
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Location: Adelaide
SA, Australia

How old is the 02 sensor?

 

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 Post subject: Re: major problem
Posted: Tue Feb 24, 2009 5:35 pm 
Getting Side Ways
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Posts: 973

Joined: 15th Nov 2004

Ride: el wagon

Location: melbourne
VIC, Australia

neither of those has been done, I will try them next. The O2 sensor is as old as the car and ahs done 340k kms, and I will clean the crank sensor. can't do it until the w/end though, so hang in there for progress reports :)
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 Post subject: Re: major problem
Posted: Tue Feb 24, 2009 5:39 pm 
Oompa Loompa
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Joined: 10th Jan 2009

Ride: ef fairmont

Location: wellington
New Zealand

i had same problem it turned out to be the ecu. i have a spare 1 but im in newzealand :(
maby try borow a mates 1 2 try b4 you spend $$$$ on new ecu

 

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 Post subject: Re: major problem
Posted: Tue Feb 24, 2009 6:07 pm 
Getting Side Ways
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Posts: 973

Joined: 15th Nov 2004

Ride: el wagon

Location: melbourne
VIC, Australia

I have been thinking along the same lines, mrmivec69, as the ECU controls the spark advance etc. Even in learn mode, the timing was erratic, so again, I am thinking ECU. I am having issues with the BCM as well: key on, no start, tap the dashboard above the knee stuff :)

Anybody in Melbourne wanna lend me an ECU :lol: (or got a spare one??) (Wagon ECU)
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