G40/pc178 Sensor

UrS4boy · 1 July 2015, 02:06

Originally posted by malncol

good point ill have to check if mine is G4 or G28 as mine only runs the one sensor there for the motec .I know they are near bullet proof but if i have a spare then it wont break thanks mal

When you figure it out, I will probably have a good anti-failure paranoia suggestion for you.

malncol · 30 June 2015, 20:30

good point ill have to check if mine is G4 or G28 as mine only runs the one sensor there for the motec .I know they are near bullet proof but if i have a spare then it wont break
thanks
mal

UrS4boy · 30 June 2015, 17:32

G4 and G28 Info and Maintenance

Originally posted by malncol

At the moment there is nothing wrong with the car ,iam just getting some spares for the rally car .I know you can just buy the hall sensor on its own but ill get a complete one as a spare and prob a spare sensor as well , the crank one hopefully wont be as expensive thanks mal

Again, why do you think you need a crank sensor? G4 = crank position, G28 = crank/engine speed. Neither fails very often because they are basically wire coils inside metal cans, no moving parts.

G4 and G28 info: http://forums.quattroworld.com/s4s6/msgs/20986.phtml

G4 = 034905381 (black) http://www.ecstuning.com/Search/Site...5381/ES273566/

G28 = 034905381A (grey) http://www.jimellisaudiparts.com/pro...34905381A.html

malncol · 30 June 2015, 17:12

At the moment there is nothing wrong with the car ,iam just getting some spares for the rally car .I know you can just buy the hall sensor on its own but ill get a complete one as a spare and prob a spare sensor as well , the crank one hopefully wont be as expencive
thanks
mal

UrS4boy · 30 June 2015, 16:02

G40 Cam Sensor Replacement DIY pdfs

Why do you think you need a crank sensor? There is always a G28 Crank Sensor (is bad) code when you pull the codes with the engine stopped.

As for the cam sensor, the ebay link seems to be a correct AAN/ABY/ADU cranksensor, at least based on the bracket PN (034905161) in the photo and the general shape of the Hall sender that they show. The 3 pin plug also looks correct.

All that said, for US$15 and shipping (airmail, small packet) you could purchase just the Hall sender from EFI Express:

EFI Motorsport

http://www.efiexpress.com/catalog/product_info.php?products_id=95

EFI Motorsport is a company dedicated to providing quality upgrade parts, hardware, software, tuning, and service for a range of European vehicles.

To install it you would follow this DIY by Nate Persing:

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http://picasaweb.google.com/104138090013789212848/CamPositionSensorReplacement?gsessionid=MFV4eNVNp2QWYJKjg1YfaQ

Also available as a pdf: http://12v.org/urs/NatePs_ImQuattros...tProcedure.pdf