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1986 Volvo 740 ECU wiring

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
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slm987
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1986 Volvo 740 ECU wiring

Post by slm987 » Sat Jan 23, 2016 3:17 pm

Hey guys! My 740 more or less tried to commit suicide :lol: and torched a lot of the wiring coming from the ignition coil into the cabin. I know how to get the wiring going to the fuse panel out. But how do I remove the harness coming from the engine bay to the inside of the car? I want to tape that up and make sure what I can't see isn't burnt.



slm987
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Re: 1986 Volvo 740 ECU wiring

Post by slm987 » Sat Feb 06, 2016 1:19 pm

Bump?



93Regina
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Re: 1986 Volvo 740 ECU wiring

Post by 93Regina » Sat Feb 06, 2016 3:59 pm

slm987 wrote:how do I remove the harness coming from the engine bay to the inside of the car?
Ask Dave



slm987
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Re: 1986 Volvo 740 ECU wiring

Post by slm987 » Sun Feb 28, 2016 4:32 pm

It's not the engine harness, it's the harness going back from the coil THROUGH the firewall and then to the ECU and fuse panel. I wish it was as easy as the engine harness.



93Regina
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Re: 1986 Volvo 740 ECU wiring

Post by 93Regina » Sun Feb 28, 2016 7:41 pm

slm987 wrote:harness going back from the coil
I don't own a 700 series Volvo...but from looking at this thread, specifically that diagram, I must assume coil and powerstage wires are bundled with headlight wires. So, start disconnecting, or splice what's needed to be spliced.



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