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General => The garage => Topic started by: A5H on 03 November 2013, 08:32

Title: MK4 1.8T starts then cuts straight out
Post by: A5H on 03 November 2013, 08:32
So I went to pick the car up yesterday to get it ready for its MOT tomorrow

On the way home I stopped to put £40 petrol in it, got back in the car and it won't start properly

It starts for 1 - 2 seconds then cuts out? If I rev as I'm starting it it will start to rev then just cut out?

HELP
Title: Re: MK4 1.8T starts then cuts straight out
Post by: sharki786 on 03 November 2013, 11:18
Sounds like an immobliser problem to me. Try and get it scanned
Title: Re: MK4 1.8T starts then cuts straight out
Post by: A5H on 03 November 2013, 12:01
I have a diagnostic reader on its way, that will be here Tuesday

I think it's either fuel pump, fuel pump relay, immobiliser or engine temp sensor but we will see
Title: Re: MK4 1.8T starts then cuts straight out
Post by: A5H on 05 November 2013, 11:00
So... After a scan its come up 3 fault codes

Engine

17978 = Engine start blocked by immobilizer
00561 = Mixture adaptation: adaptation limit (add) exceeded

SRS

00532 = Supply voltage B+: signal too low

First off the battery was sat flat on the car for not far off a year but after starting and taking for a run its been charged and worked fine

I guess the battery is gone and the low power from this is causing the immobilizer to cry and not start the car?

New battery needed

 
Title: Re: MK4 1.8T starts then cuts straight out
Post by: Ben@VWH on 05 November 2013, 15:29
If you have a spare key give that a try. Weak transponders and weak receivers are the usual culprits.
Title: Re: MK4 1.8T starts then cuts straight out
Post by: A5H on 05 November 2013, 15:56
The mate who i got the car off still has the spare key, will get it over the next few days

I deleted all the fault codes and it only come back up with 17978 = Engine start blocked by immobilizer

I have another battery but need to fit a new rad hose before trying, rad hose should be here tomorrow

I will keep you updated  :smiley:

Title: Re: MK4 1.8T starts then cuts straight out
Post by: A5H on 07 November 2013, 11:07
A little update, still not started

Things ive tried:

Disconnecting battery for 10 mins
Disconnect battery and hold terminals together for 30 seconds
Tried known decent battery
Leave ignition on for 5 mins switch off then try
Switch ignition on / off 10 times then try
Checked all fuses
Checked key transponder isnt damaged

Things to try:

Spare key (later today)
Check immo coil and connections
Check cluster and connections
Get keys reprogrammed
Replace immo coil
Replace cluster
Replace immo
Replace ECU
Get someone to do immo defeat
Buy ECU with immo defeat

The problem is starting to drive me mad now, fingers crossed the spare key works otherswise it starts getting complicated

I will update again soon
Title: Re: MK4 1.8T starts then cuts straight out
Post by: Ben@VWH on 07 November 2013, 13:16
What year/engine is the car?
Title: Re: MK4 1.8T starts then cuts straight out
Post by: A5H on 07 November 2013, 13:44
What year/engine is the car?

Its W reg so 2000, MK4 5 door 1.8 Turbo

Im not sure of engine code?
Title: Re: MK4 1.8T starts then cuts straight out
Post by: Rhyso on 07 November 2013, 17:20
Can you hear the fuel pump priming when you turn the ignition on??
Title: Re: MK4 1.8T starts then cuts straight out
Post by: Ben@VWH on 08 November 2013, 09:15
What year/engine is the car?

Its W reg so 2000, MK4 5 door 1.8 Turbo

Im not sure of engine code?

post a pic of your engine, if it's a later type I can delete the immo for you.
Title: Re: MK4 1.8T starts then cuts straight out
Post by: A5H on 08 November 2013, 10:47
Yes the fuel pumps makes a noise when you turn ignition on and when i try to start the car it smells of petrol bad for a few seconds
Title: Re: MK4 1.8T starts then cuts straight out
Post by: A5H on 08 November 2013, 10:53
What year/engine is the car?

Its W reg so 2000, MK4 5 door 1.8 Turbo

Im not sure of engine code?

post a pic of your engine, if it's a later type I can delete the immo for you.

I beleive its immo 2 and the engine code is AGU

Check your PM  :smiley:
Title: Re: MK4 1.8T starts then cuts straight out
Post by: Ben@VWH on 08 November 2013, 11:48
Ah I can't do the agu ecu's. Anything 2000 onwards (aum,auq,arz etc) I can help with  :sad:
Title: Re: MK4 1.8T starts then cuts straight out
Post by: A5H on 08 November 2013, 14:33
Ah I can't do the agu ecu's. Anything 2000 onwards (aum,auq,arz etc) I can help with  :sad:

No problem, i think ive found someone who can but its a temp fix, il have to get new ECU clocks later and try them

I will let you know how i get on anyway