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2 big (20 odd wires) connector blocks behind the inlet manifold (on a jts anyway), try cleaning them up and scraping the connectors to cut through any oxidation. get a pointy thing and try to reduce the gap on the female connectors to create a better contact (don't go crazy though you want to be able to close the block up again!)
See if your problem goes away, I did this and cured loads of errors- my jts was going into limp mode before - I was getting Knock sensor errors, Lambda, coil pack, missfires and others. did this block clean up and it all stopped! didn't cost me a penny - ,...That was about 2 months ago. Just 2 days ago i've started getting the Lambda sensor errors again. So as one of my big blocks was already soldered by previous owner, I'm going to solder the other one... I want to solder the Lambda blocks too either side of the fan but the block has a piggy back from some weird extra black bit - whats that? is it important?
 

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My Lambda connectors had that grease in them, I don't know if thats where the errors were coming from, but its to much of a coincidence to ignore that when I did the big block all the trouble stopped.
I read all over here people suggesting soldering the big connector blocks, after my personal experience of the problems caused I would say the same now... i'll solder and then see.
Anyone know if the central locking and windows draw power through the bulkhead connector blocks? my fuses are fine but no front window power and no central locking?!
 

· Registered
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144 Posts
My Lambda connectors had that grease in them, I don't know if thats where the errors were coming from, but its to much of a coincidence to ignore that when I did the big block all the trouble stopped.
I read all over here people suggesting soldering the big connector blocks, after my personal experience of the problems caused I would say the same now... i'll solder and then see.
Anyone know if the central locking and windows draw power through the bulkhead connector blocks? my fuses are fine but no front window power and no central locking?!
Update on this... soldering the block at the bulkhead has fixed my issues!
The problem I had with my windows, speakers and central locking was the wiring connector block in the drivers door hinge - clean and reconnect a few times sorted it.
 
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