996 cutting out af 7000rpm?????

Have you tried blasting that off with switch cleaner?

 

it's hard to see from picture, so one or more are corroded right through? I had to resolder one connection on a 748 but moisture damage was too far gone to save and faults remained.

 

You should be able to clean that up using one of these. Once you have the board cleaned up and any joints re-soldered it's a good idea to lacquer over the repaired areas to seal the weather out and prevent further corrosion.

 

Hi Darren if you still want to borrow an ECU pretty sure I've got a 1.6 on my 748 I can whip it off tonight and you can collect it from my shop in Leeds tomorrow if you like.

Let me know

Cheers Clive

 

Yup - you'd need to swap the eprom over.

 

Darren I vaguely recall a similar problem, on this or the other site, which turned out to be an earthing issue somewhere in the headlight region that caused the tacho to occasionally drop to zero.

 

Good to hear you got it sorted

 

Was it the solderizing?

 

Excellent news. Tricky job to hand re-solder without heat damage to sensitive components!

 

Well done Darren, get a PCB coating on it (Maplins or RS do an aerosol type) silicone seal the housing lid back on chuck a little bag of silica gel in and gaffa over the rubber bung

 

let's hope that's done it - I had one bar totally corroded through on a 748 which I had to bend and poke down through the board before soldering but did not cure.

 

I love a happy ending Darren and this thread will help others when a similar fault persists. The consistency of the cutout revs made me think it could only be ECU other than TPS.