Official Mexican / Brazilian Beetles - All years

[plagos_g]

I've got my hands on a non-functional ECU, and I'm trying to figure out how to fix it, are there schematics available for the board itself?

The computer itself presents at least two issues:
-Fuel pum is always on
-No signal from TPS detected

The vagcom scanner is able to communicate with it.
What can cause it to trigger the pump on all the time? (Running diagnostics turns the pump on and off as it should.


Also, a mexi arrived at a friend's shop with other unusual symptoms (and ecu problems, apparently): when the engine is shut off the battery and oil light stay dimly lit, and the IAC has a very acute noise. As soon as you disconnect it (or any IAC, really, I tested two extra ones), lights go off.
NTC2 is shot (-22ºc when room temperature was near 40ºC)
TPS sends no signal to ECU (or has the same issue of the previously mentioned ECU).

Any suggestions are welcome. Finding a working unit here can be difficult, and may cost about 400 usd.
_________________
1998 Volkswagen Sedan (MexiBeetle, daily drive)
1987 Volkswagen Kombi (crew cab, br)

[Shanks Kop]

Hope you all had a great weekend.

I'm hoping to pick your brains. I have a Mexican imported classic style Beetle, left hand drive here in the UK.

Make: VW
Model: Beetle Classic Shape - Mexican Import
Year: 2003

It came with the factory immobiliswr & Alarm. When I normally start the car I hear a click behind the dashboard (fuel pump disarm?) and a click behind the seat, believe that's the immobiliser disarming. If you don't hear these two, the car will not normally disarm to start.

The current predicament the relay 80 (tried two, both doing the same) is tapping internally like crazy,.when.i turn.the key.

Anyone have any ideas what it may be?

Thanks in advance.

[GArBa]

That relay is fed through the anti theft system as you say so for me it's like a Mystery box. I'd suggest you drop a PM to users Antonio Trejo who knows how to deal with that but won't post it openly for obvious reasons.
_________________
cars:
'97 type 1 1600i
'14 type AA Seat Mii (sadly dead after 270.000 km)
'22 type C1 T-Cross
'23 type AC3 Hyundai I10 (VW no longer makes small cars!)
-------------------------
moped:
'82 Benelli Magnum 3v

[GArBa]

So this is how the wire connects on the plate bulb holder on a mexi bug:

at first I tought it was a common hollow rivet but on closer examination it appears that the terminal itself is pushed throug and compressed as if it were a rivet. I do have a spare holder with a different design and I was ready to use hollow rivets but I'd rather re-use this original if possible. does anyone know if this type of terminals are still available and what kind of tool is needed to fix them in place?

Edit: of course if Antonio were to have the socket in stock it would be easier...
_________________
cars:
'97 type 1 1600i
'14 type AA Seat Mii (sadly dead after 270.000 km)
'22 type C1 T-Cross
'23 type AC3 Hyundai I10 (VW no longer makes small cars!)
-------------------------
moped:
'82 Benelli Magnum 3v

[hopkin]

Here's a couple pics from Antonio's gallery.

It looks like he has (or had) the housing with the light and harness installed.

You can see the pins for the connector at the other end.

You should contact him, it may be worth getting the new harness. If he has to separate the housing from the light and harness and doesn't want to (for obvious reasons), I'd be interested in buying the housing portion so he could sell the whole unit.
_________________
1971 Super Beetle (past)
1971 Super Beetle (past)
1974 SunBug (past)
1972 914 (past)
1991 Honda Civic (Original Owner)
1996 'Open Air' Mexican Beetle (current)
2015 Golf (current)
2017 Dune Edition (daughter's car)

[GArBa]

Thanks hopkin, dropped him a PM... in the meantime I'm working on my home made replacement.
_________________
cars:
'97 type 1 1600i
'14 type AA Seat Mii (sadly dead after 270.000 km)
'22 type C1 T-Cross
'23 type AC3 Hyundai I10 (VW no longer makes small cars!)
-------------------------
moped:
'82 Benelli Magnum 3v

[GArBa]

So I bought the new part from Antonio, however I decided to give it a try and fix my old one. took the measurement from Antonio's and used pop rivets to connect the new harness, I'm quite pleased with the result and I'll keep the spare in my stash!

assembled:

installed and working:

wire routing:

plug (it no longer rotates 90°upwards when opening the lid :

_________________
cars:
'97 type 1 1600i
'14 type AA Seat Mii (sadly dead after 270.000 km)
'22 type C1 T-Cross
'23 type AC3 Hyundai I10 (VW no longer makes small cars!)
-------------------------
moped:
'82 Benelli Magnum 3v

[hopkin]

Nice job!
_________________
1971 Super Beetle (past)
1971 Super Beetle (past)
1974 SunBug (past)
1972 914 (past)
1991 Honda Civic (Original Owner)
1996 'Open Air' Mexican Beetle (current)
2015 Golf (current)
2017 Dune Edition (daughter's car)

[Sotobaggins]

Wow...great job … been super quiet.... Should LED it super bright
_________________
2001 Ultima Clasico Edicion Mexibeetle
2003 Black GTI 1.8T

[Sotobaggins]

Either super cold to take the Mexi's out or they have been behaving... all I hear is crickets....
_________________
2001 Ultima Clasico Edicion Mexibeetle
2003 Black GTI 1.8T

[GArBa]

in Lombardy we cannot drive around without valid reason due to CoViD-19 restrictions...
_________________
cars:
'97 type 1 1600i
'14 type AA Seat Mii (sadly dead after 270.000 km)
'22 type C1 T-Cross
'23 type AC3 Hyundai I10 (VW no longer makes small cars!)
-------------------------
moped:
'82 Benelli Magnum 3v

[hopkin]

[GArBa]

[kbrower68]

Looking to replace my spark plugs and plug wires. Any recommendations?

Thanks Kevin

[GArBa]

Beru for the cables, don't have the Part Number but Antonio usually has them in stock.

Plugs, NGK BP5ES-A or, if you can't find them, BP5ES.

BP5ES-A were stock on 1600i bugs before VW switched to Champion N12YC. The latter plug are IMHO of lesser build quality than the NGK.

BP5ES is the plug NGK recommends for the 1600i bug on their spec sheet as an alternative to BP5ES-A.
_________________
cars:
'97 type 1 1600i
'14 type AA Seat Mii (sadly dead after 270.000 km)
'22 type C1 T-Cross
'23 type AC3 Hyundai I10 (VW no longer makes small cars!)
-------------------------
moped:
'82 Benelli Magnum 3v

[kbrower68]

Thanks for the info. Will check spark plug part numbers. Couldn't find Beru, any other suggestions?

[hopkin]

[GArBa]

according to this dude on youtube there is a difference:


Link

_________________
cars:
'97 type 1 1600i
'14 type AA Seat Mii (sadly dead after 270.000 km)
'22 type C1 T-Cross
'23 type AC3 Hyundai I10 (VW no longer makes small cars!)
-------------------------
moped:
'82 Benelli Magnum 3v

[hopkin]

I think that guy knows what he is talking about

I stand corrected, I have a couple sets of VW branded '-A' as spares, the last time I changed plugs I used BP5ES, no difference that I could tell.

Here's a spec sheet for NGK. It looks like the '-A' may be documented here as the Firing End Construction - Special Design, but not clearly shown as a suffix on the spec.

_________________
1971 Super Beetle (past)
1971 Super Beetle (past)
1974 SunBug (past)
1972 914 (past)
1991 Honda Civic (Original Owner)
1996 'Open Air' Mexican Beetle (current)
2015 Golf (current)
2017 Dune Edition (daughter's car)

[robertsfd2002]

My son just bought a 1984 Mexican Beetle. Sorry if this is a stupid question, neither he nor I are very mechanical (yet), but how do you get parts for this year model? When I look for parts (e.g., jbugs.com), 1984 isn't even an option.

Thanks in advance for some direction.