[Changing an ECU?]

I think my next step is to take it to someone for a proper diagnostics rather than relying on the vagcom 😫

[Changing an ECU?]

Thanks for your help everyone.

10 hours ago, Rich said:

Well I'm assuming this is a 75 version.

Does it crank when you turn the key?

It does crank when I turn the key, but just doesn't fire up. But yesterday afternoon, it cranked, fired up and then immediately cut out and wouldn't start again! 

7 minutes ago, loopydebs said:

Where are you based? I have recent ecu fun experience if I can help in any way xx

I'm based in Bristol! X

47 minutes ago, Skezza said:

I don't know why..... But I'd be interested to see what happened if you tried jump starting it off another car with a good battery.

I have thought about that, I'll give it a try next time it happens. 

44 minutes ago, Sausage said:

Pull the plugs off the ecu and look for dark corroded pins and connections there as well.

That is all 4 injectors not working so check their wiring loom too.

If you have to take it somewhere then take it to an auto electrician as opposed to a mechanic due to specialist knowledge, so it will be less guess work.

Thank you, good shout taking it to an auto electrican rather than a mechanic. 

[Changing an ECU?]

4 minutes ago, Rich said:

So shorts on one and four 

That wouldn't stop it starting.

I give up 😭😭

[Changing an ECU?]

17 minutes ago, mk2 said:

I'll stick my neck out and say definitely not the ECU. Convenience control module (CCM) may have a link to windows and locks as already mentioned, but most likely the lock microswitches in the door.

non starting means probably no fuel injecting or no ignition sparking. The ECU uses the crankshaft sensor as it's primary sensor to get the ignition to go; and water temp/MAP/MAF/air temp to work out how much fuel to throw in. Assuming fuel pump is running ok...

diagnostics will tell all...

the stereo not working makes me think a power relay or perhaps ignition key switch?

 

15 minutes ago, Rich said:

I had a 1.4 with starting issues.

Was the crankshaft.

Go try it now it is cold and it should work.

Thanks guys, you've both been extremely helpful. Funnily enough, the car never struggles to start in winter...

The diagnostic said something about the fuel injectors, here's exactly what it picked up:

Address 01: Engine       Labels: 036-906-014-AHW.LBL
   Controller: 036 906 014 BLw
   Component:  MARELLI 4CV       2802
   Coding: 00003
   Shop #: WSC 01236
   VCID: D2D7794B0DF7
5 Faults Found:
01249 -  Fuel Injector for Cylinder 1 (N30)
            29-10 -  Short to Ground - Intermittent
01250 - Shareware Version. To Decode all DTCs
            29-10 - Please Register/Activate - Intermittent
01251 - Shareware Version. To Decode all DTCs
            29-10 - Please Register/Activate - Intermittent
01252 -  Fuel Injector for Cylinder 4 (N33)
            29-10 -  Short to Ground - Intermittent
01312 - Shareware Version. To Decode all DTCs
            37-10 - Please Register/Activate - Intermittent
Readiness: N/A

-------------------------------------------------------------------------------
Address 02: Auto Trans       Labels: None
   Controller: 001 927 749 G
   Component: AG4 Getriebe 001    2022
   VCID: 1E4F5D7B89AF
No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags       Labels: 6Q0-909-605-VW5.LBL
   Controller: 6Q0 909 601
   Component: 02 AIRBAG VW5       0003
   Coding: 12338
   Shop #: WSC 01236
   VCID: F093D3C3A3BB
1 Fault Found:
00532 -  Supply Voltage B+
            07-10 -  Signal too Low - Intermittent

[Changing an ECU?]

27 minutes ago, Skezza said:

That sounds like ****. If the central locking isn't working, i can't see why that's got much, if anything to do with the ECU. It is controlled by the CCM.

Tbh I don't care about the little faults like the central locking etc. It's the starting issues that are causing a problem. Right now my car is stuck in my local supermarket car park as it didn't start after an hour of trying this afternoon 😔

[Changing an ECU?]

56 minutes ago, weslangdon said:

If you have a TDI I have a spare ecu, but it will need coding to your car

Thank you for the offer but I don't have a TDI 😔

[Changing an ECU?]

56 minutes ago, Rich said:

Why does it need an ECU?

They rarely rarely go wrong but are often diagnosed so you leave the diagnoser alone.

My lupo struggles to start intermittently and has lots of electrical faults (central locking not working, problems with the stereo etc. When I diagnosed it there was various short to ground faults. My mechanic checked over all the wiring to see if there was any corrosion or a bad earth and all was fine he said he was 95% sure it's a problem with the ECU 🤔

[Changing an ECU?]

Hey everyone, 

I have a 2000 1.4 Lupo that needs a new ECU. I was thinking about buying a second hand one and fitting it myself. Would this be really tricky? I have read that you may need to get it recoded from the dealer etc. is this actually the case? 

Thanks in advance

[Any help with these codes?]

Thanks guys, great help. I am taking my car to a mechanic on Monday, fingers crossed I can get this problem sorted! 

[Any help with these codes?]

Hey everyone,

My car struggles to start in hot weather so I've scanned it using the VCDS Lite software and it has come up with the following codes:

 

VCDS-Lite Version: Release 1.2
Monday, 03 June 2019, 17:53:18.

Chassis Type: 6X - VW Lupo
Scan: 01,02,03,08,15,17,19,25,35,37,44,45,55,56
 
-------------------------------------------------------------------------------
Address 01: Engine       Labels: 036-906-014-AHW.LBL
   Controller: 036 906 014 BLw
   Component:  MARELLI 4CV       2802
   Coding: 00003
   Shop #: WSC 01236
   VCID: D2D7794B0DF7
5 Faults Found:
01249 -  Fuel Injector for Cylinder 1 (N30)
            29-10 -  Short to Ground - Intermittent
01250 - Shareware Version. To Decode all DTCs
            29-10 - Please Register/Activate - Intermittent
01251 - Shareware Version. To Decode all DTCs
            29-10 - Please Register/Activate - Intermittent
01252 -  Fuel Injector for Cylinder 4 (N33)
            29-10 -  Short to Ground - Intermittent
01312 - Shareware Version. To Decode all DTCs
            37-10 - Please Register/Activate - Intermittent
Readiness: N/A

-------------------------------------------------------------------------------
Address 02: Auto Trans       Labels: None
   Controller: 001 927 749 G
   Component: AG4 Getriebe 001    2022
   VCID: 1E4F5D7B89AF
No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags       Labels: 6Q0-909-605-VW5.LBL
   Controller: 6Q0 909 601
   Component: 02 AIRBAG VW5       0003
   Coding: 12338
   Shop #: WSC 01236
   VCID: F093D3C3A3BB
1 Fault Found:
00532 -  Supply Voltage B+
            07-10 -  Signal too Low - Intermittent

 

Any ideas what they mean?

Thank you

 

[Trouble starting Lupo in hot weather]

26 minutes ago, Sausage said:

If you have a laptop get £5 VAG KKL lead off ebay and run free VCDS Lite that will be good enough to get codes etc. You can choose to register it for a hefty fee or else google for the crack of you want full functionality.

There probably are ways of doing it with phones etc but I dont know them as i am happy with the laptop.

Thank you! I think that's exactly what I'll do 😊. Unlike cars, I'm pretty good with computers so can hopefully get the full version unlocked without paying for registration 😁. Thanks again! 

[Trouble starting Lupo in hot weather]

Thanks for your help guys 🙂

I know very little about cars so will show this thread to someone who does and hopefully we can come up with a solution! 

[Trouble starting Lupo in hot weather]

Ahhh, I'm in Bristol. But thanks for the offer 😊

[Trouble starting Lupo in hot weather]

Oh a quick Google search says that the VCDS is the software. Can I use the lite version or do I have to upgrade to the full version? 

[Trouble starting Lupo in hot weather]

Thanks guys 😁

I don't know where to start when it comes to vag leads. So if I buy one off ebay, do I need to download some software for my laptop? If so which software? Any links? 

Sorry I'm a complete beginner and a fairly new driver 🙈

[Trouble starting Lupo in hot weather]

Hey all, 

I have a 1.4 automatic Lupo, 2000 which has trouble starting in hot weather. On cooler days I have no problems, but on hot days, particularly when my car is in direct sunlight it struggles to start. It just cranks and cranks but struggles to fire. Sometimes it takes 10 tries before it starts, other times only a couple. Weirdly this rarely happens when I start the car for the first time in the day, only when it has been driven around and the engine has been switched off (so I'll park up, pop in the shop, come back and it struggles to start). Luckily it has always started eventually, but I know it's just going to get worse. Any ideas what it might be? After reading on here about it possibly needing a new crank sensor, I took my car to a mechanic who said if it was the crank sensor I wouldn't only have this problem in hot weather? I also ruled out it being a problem with the immobiliser as I have the same problem with my spare key. I'm thinking about buying a diagnostics tool myself to find out what the problem is rather than taking it to the garage to diagnose. I have read on this forum about vagcom? But have no idea where to start! 

Thanks!