Idle adjustment 1999 Mexican Bug (3500 miles)

[rodgersbadassbus64]

Hello, I'm a bus guy 😉 however bought a Mexican bug for my Daughter. Does anyone have simple way to adjust the Idle on VW Sedan 1600i 1993-2004 Digifant system. Thanks in advance. The car has never really been driven for the last twenty years. I did replace the rubber fuel lines and filter, along with seafoam in the tank! Thanks in advance. I will have my daughter set up her own account with pictures.

BTW she lives in Akron Ohio, I'm leaving tomorrow to go back home in Ortonville Minnesota.

[GArBa]

Good car choice; idle adjustement is unfortunately not as simple as on a carb engine, but Manfred at 1600i.de has everything you need.

http://1600i.de/1600i-mechanik/drosselklapppe/e_drosselklappe.html

unfortunately some sort of digital K-line tipe interface to dialog with the ECU is necessary for this. (VAG-COM, or a VAG 1552 reader) A local VW dealer may be able to help since they usually do have the equipment for older VW/Audi watercooled models, but they are getting scarcer.

an adapter cable would be needed, I have a post in the sticky mexi thread in this section on how to make one with VW spares readly available from any dealer.
_________________
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!)
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moped:
'82 Benelli Magnum 3v

[rodgersbadassbus64]

Thanks for the response...no adapter cable...I did some more reading and it could possibly be a bad ground? So I will try that first. Then maybe we can explore a (ISV)😁

My idle and boog is terrible..stumbles doesn't make sense for an auto with so few miles...I did a vacuum leak test on the two green lines as well as the likely places. I'll check the alternator belt as well... thanks 😊

Sorry about the GMC tow rig but it does have a Jeremy tow bar:)

[GArBa]

the problem is, the issue you are experiencing may be due to the ECU being in "limp" mode. If that's the case, no repair would work until you access the ECU memory and erase the stored fault codes.

BTW, good color choice. Tornado red rocks!
_________________
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

[rodgersbadassbus64]

So is there another way to erase codes to get out of limp mode? I thought by disconnecting the battery it would reset? There's no paperclip and read blinks or anything?

[radstude]

The green line go in thru the back fire wall, Check that splice under the rear seat. To the ECU. How many miles are on the car. What year?


PS, Someone has left California

[rodgersbadassbus64]

I wonder how many other people have had this problem with no solution come to find out I believe it was a bad ground so I put a new strap from the electronic module to the alternator and another ground strap from the nose of the transmission to the chassis. I also tighten the alternator belt like somebody else suggested...by the way the pin connector that is an example of the on the site is actually upside down so they have the pins in the wrong place to make a connector as far as the illustration goes. The numbering to the OBD2 pin code was correct. However men look at pictures...lol
good observation I left California for the Metropolis of Ortonville Minnesota and I'm here to say it is way better there:) thanks for the support.I love thesamba😁

[rodgersbadassbus64]

I misspoke I thought I had it but it's still dying at stop lights and still has a Boog, dang. It's not as bad as it was still drive ability issue 😂

[Antonio Trejo]

This is the genuine VW Sedan 1600i adapter cable. You can get the HEX-V2 Ross Tech interface to scan the ECU and erase the fault codes: https://store.ross-tech.com/shop/vchv2_ent/

After 25 years dealing with genuine parts for Sedan 1600i, usually a defective digifant relay (30) is the cause of erratic idle speed.
_________________
Parts VW
"From Volkswagen of Mexico factory..."
Genuine VW Sedan parts
Genuine VW Ultima Edition parts
Genuine VW Type 2 watercooled parts

[GArBa]

[GArBa]