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Model specific boards => Golf mk4 => Topic started by: RC81 on 13 December 2016, 18:12

Title: Lambda B1 S1 Sensor, battery fuse tray & alternator wire replacement
Post by: RC81 on 13 December 2016, 18:12

Hi, At the weekend I thought I would complete a few urgent jobs on the golf 1.8T.
Firstly the B1 S1 pre Lambda Sensor was throwing up 3 codes, so I pulled the old one out to find it was a pattern part, not an original.

(http://i268.photobucket.com/albums/jj24/robracer69/IMAG2363_zpsfmhzywin.jpg) (http://s268.photobucket.com/user/robracer69/media/IMAG2363_zpsfmhzywin.jpg.html)
Left, the pattern part. Right, A Bosch oem sensor

(http://i268.photobucket.com/albums/jj24/robracer69/IMAG2361_zpsucewocgx.jpg) (http://s268.photobucket.com/user/robracer69/media/IMAG2361_zpsucewocgx.jpg.html)
Couldn't get the car in the unit, so got it jacked up instead

Then had to replace the melting battery fuse tray and the Positive Alternator wire.
(http://i268.photobucket.com/albums/jj24/robracer69/IMAG2365_zpslwymawzg.jpg) (http://s268.photobucket.com/user/robracer69/media/IMAG2365_zpslwymawzg.jpg.html)

So found a very good 2nd hand replacement on eBay for a few quid
(http://i268.photobucket.com/albums/jj24/robracer69/IMAG2367_zpsvkgenoss.jpg) (http://s268.photobucket.com/user/robracer69/media/IMAG2367_zpsvkgenoss.jpg.html)

So made a heavy duty Positive wire to replace the existing corroding one. It was causing heat & resistance.
(http://i268.photobucket.com/albums/jj24/robracer69/IMAG2369_zpsoqvqnkuw.jpg) (http://s268.photobucket.com/user/robracer69/media/IMAG2369_zpsoqvqnkuw.jpg.html)

Replacement fuse tray and beefed up wire in place.
(http://i268.photobucket.com/albums/jj24/robracer69/IMAG2370_zpshhsxdpzv.jpg) (http://s268.photobucket.com/user/robracer69/media/IMAG2370_zpshhsxdpzv.jpg.html)

So after a few hours down the lock-up, some nice dry mild weather, a few tools a job well done i'd say.
Oh and the fake Lambda sensor can go in the bin!

Title: Re: Lambda B1 S1 Sensor, battery fuse tray & alternator wire replacement
Post by: Wazzzer on 14 December 2016, 18:42

Good work mate, where is your lock up?

Title: Re: Lambda B1 S1 Sensor, battery fuse tray & alternator wire replacement
Post by: RC81 on 15 December 2016, 00:12

Cheers Wez  :smiley:
it's not far from Newport. A very handy thing to have this time of year

Title: Re: Lambda B1 S1 Sensor, battery fuse tray & alternator wire replacement
Post by: OSR on 15 December 2016, 08:51

That fusebox/tray looks like new! Nice neat job there sir!

Title: Re: Lambda B1 S1 Sensor, battery fuse tray & alternator wire replacement
Post by: RC81 on 17 December 2016, 12:57

I was lucky really, I scoured eBay for ages to find an original VW fuse tray and found this one in near mint condition. But the main positive wire was getting very hot as the pics showed. So needed urgent attention. And the ECU was throwing up a code for this too.
Cheers though, I enjoy a satisfactory job well done