QLCC Chip Problems
08-20-2005, 01:22 PM
#1
New Member
Thread Starter
Join Date: Jul 2005
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
QLCC Chip Problems
Undertook installing a qlcc chip today and have been having hell. I would say my soldering ability and instalation job are both about average. After i got the chip installed my car wouldn not start. Pin 4 on the ecu harness has 12v when the igition on. I found some inconsistencies in my soldering job and fixed them. Using a multimeter i checked the pins between the chip, and the traces from them to make sure there was continuity in the right places. Now, my car still wont start, but when i turn on my ignition the wgfv goes crazy and i hear a relay clicking on and off. I have no idea on where to start diagnosis on this problem, and no place around here to get a spare ecu. Any help would be great, i have searched the forums with little luck on this issue
08-20-2005, 04:47 PM
#3
AudiWorld Member
Join Date: Jul 2004
Location: Quattrosia Ohio
Posts: 366
Likes: 0
Received 0 Likes
on
0 Posts
I know someone looking, what are you asking? AND for the original q:
These are very tricky to solder in, you need a good solder/desolder gun with a pump to suck out the old solder--also needs to be low-power!
If you overheat the board or burn the traces you may mess up the ecu...Try to de-solder/re-solder the socket to the board...Good luck.
If you overheat the board or burn the traces you may mess up the ecu...Try to de-solder/re-solder the socket to the board...Good luck.
08-21-2005, 08:15 AM
#5
It is VERY important to gaurd against static discharge when chipping...
One of the small sparks that you feel when walking across a carpet and touch a door **** can fry an ECU.
If the WGFV is going nuts perhaps you cracked one of the connectors to the pressure xducer.
If the WGFV is going nuts perhaps you cracked one of the connectors to the pressure xducer.
08-21-2005, 10:56 PM
#7
New Member
Join Date: Sep 2002
Posts: 374
Likes: 0
Received 0 Likes
on
0 Posts
Always use a socket
If you're going to be in there soldering anyway, might as well solder a socket into place. Ease of installation/replacement of the ECU, and you lessen change frying the EDU from too much from the iron, bending pins, etc...
Thread
Thread Starter
Forum
Replies
Last Post
thewatcher101
A4 (B5 Platform) Discussion
4
11-13-2007 03:14 PM
WOT FREAK (BR)
S4 / RS4 (B5 Platform) Discussion
9
04-26-2004 01:08 PM
shadyraven
A4 (B5 Platform) Discussion
5
04-21-2003 04:33 PM
