Turbo vs n/a wiring loom

Post by **Carl** » 18 Jan 2006 10:30 pm

Would a wiring loom on a 940 turbo be the same as a n/a loom? I reckon it would be, but could do with someone else confirming that.

I'm gueesing the ECU itself would be different though.

Post by **340GLT** » 19 Jan 2006 12:57 am

Debatable mate as doesnt it have electronic boost sensors and wot not???
Cheers Adam

Post by **huskyracer** » 19 Jan 2006 10:17 pm

I would think the turbo loom would have a few diffarences, boost control, possibly knock sensing and maybe boost pressure sensing and inlet air temp.

Post by **Carl** » 19 Jan 2006 11:38 pm

Damn. Scrap that idea then

Post by **n xntrx volvo** » 20 Jan 2006 12:59 am

the differences are powerstage (on 2.2) ballast resistors for the inj. everything else can be swapped. your mass air wires will have to be moved over too. fyi, you can run upto 6 psi on non-turbo computers.

Post by **foggyjames** » 20 Jan 2006 05:27 am

They're almost exactly the same. The only difference I know about off the top of my head is that the turbos don't have the WOT switch connected. There are bound to be others, but consult Haynes / VADIS (or get someone kind with both of the above to help you). I'd expect you to be able to get the wrong loom and patch it easily. Do bear in mind that they changed some of the connectors at some point between 93 and 98....nearer 93 IIRC. I think it's just the body > engine bay loom connectors, so maybe it won't be a problem (since you'll take them both together from the donor) - just be aware of it.

Both have knock, neither have IAT, boost control or MAP....again off the top of my head.

Aaron - we never got 2.2 on redblocks here - only on the PRVs. We went straight from K-Jet (NA) or Motronic (turbo) to LH2.4.

cheers

James

Post by **huskyracer** » 20 Jan 2006 08:30 pm

er, beg to differ, but I had to work on a 940 turbo auto the other day and it most certainly had knock sensing and boost control, the others are an educated guess, and may well not be there, this particular car developed a running fault after the rear main oil seal was replaced, (by another place) turned out they had put the flexi plate on in the wrong position, which had the tdc reference mark on it, hey presto, 60 degrees of ignition timing, pinking even when reved up in neutral and an ecu shouting knock sensor fault codes.... took a wile to sus out what had gone wrong though!
have to say its a poor idea on volvos side to make it so you can put the flywheel/flexi plate on in any position though

Post by **huskyracer** » 20 Jan 2006 08:34 pm

er, just re read that, sorry james you did say it had knock control. this car had a 3 port boost control solenoid on the o/s inner wing.
Must learn to read posts properly and not scan through

Post by **foggyjames** » 20 Jan 2006 11:57 pm

I didn't word it too well either...

The three port boost solenoid is part of the 188bhp Turbo+ kit (13psi above ~4000rpm at WOT). I have one of those kits here, but couldn't get it working (remember I called you asking about the Amal valve?). The standard setup is a direct connection from compressor housing to wastegate.

cheers

James