-That pressure switch looks like an overboost switch. Trace the wiring with a multimeter. I see your car is 2.2 Turbo converted. I think somebody that didn't really know what they were doing may have just plugged in an overboost switch from a 740 turbo for some reason.
Just rereading your comment. The motor was actually from a 740. The original 2.1 with KJet has been removed and the 2.2lh, 2.3L from a 740 has been put in. So the overboost switch was supposed to be part of this harness. Just not entirely sure if it should be hooked up to anything. Should there be a vacuum line connected to it? Is it an under dash mounted switch?
Does it have the unvented front discs? Adding vented discs and calipers from a later 240 is another subtle upgrade that improves the car without really changing it's looks.
Luckily, I have the vented disks. So I am assuming as well, that I have the later model calipers as well.
Went to the junkyard in Cookstown to check out what kind of parts they had that I could get for the 242. I found a few 940's up there and that was it. Having redblocks, I figured that I could get some common parts between them.
Found a bunch of washer nozzles that will fit the 242. Just a matter of fitting them on and testing out which spray pattern would work best. All of the washer nozzles that I found for the Volvo's work for the 240. Every car just had circles cut in the hood, and the nozzles had sprung arms to keep it in place.
I also ended up getting a washer bottle motor. The old one was completely caked, and didn't work. Took apart the motor pump bracket, and fitted and working. It will not stay like this, but I was pretty happy to make it work for the day. The motor was from the 940, and I was able to get 2 spares. I'll be using these motors in the car. The design looks like it should have more longevity than the original.
Next I ended up tackling some wiring. My major concerned were:
1. Overdrive Circuit
2. Taillights
3. Fuel and Temp Gauge on the dash
4. Figure out where excess wiring goes to.
I was able to figure out everything but overdrive. I found that I do not have the wiring going to the solenoid valve at the front of transmission, and I don't have a the wire going to the solenoid at the back of the transmission. Looking at the Bentley book, I noticed that there is supposed to be a little wiring harness clipping into the dash area, and connecting the front and the back of the trans.
Does anyone know what this looks like? I have a spare harness from the B21 that was originally in the car. I need to sort through it, and search this little section of the harness out. Any steering in the right direction would be great.
Taillights are working now. The stamped steel that is on the backing of the taillights, where the bulbs screw into, they had a nice coating of crap and corrosion. Once I cleaned those up, the taillights were working.
Fuel and Temp gauge, I was reading that there could be 3 issues. It could be the cluster. The wiring. Or the sensors. To test them, ground each circuit and see if the gauges go to full.
I grounded both circuits, and both ended up going to full. Now it's a matter of ensuring the grounds and wiring are actually good for the circuit before I start changing sensors. I think I'll end up having to put new connectors on circuits just based on the amount of corrosion
The biggest headache is whatever crap of a rats nest I have with excess wiring, and crappy burnt wiring. I found a few issues with just behind the console. There was some random wire that was connected to the hazard circuit. It was about 2 feet long, and it was leading to nothing. Touched it to a ground and the fuse for the hazards went.
You can see in the picture, it was connected to the Green/White wire with the electrical acorn on it. Swiftly removed. Once I have the harness sorted, I'll have to go back in and solder it back together.
This red wire, I have not traced it back yet. It was getting late by the time I got to that wire, but what is that solenoid that it is attached to?
Another red wire. This was straight from the fuse panel. Went through the cabin and under the carpet. For whatever reason, someone hooked up a cable directly to the fuel pump. It was never hooked up since I have had it, so it had no function.
Going back to the junkyard on Friday. One of the 940's has brand new shocks on it, which I will likely end up taking. Any ideas if they fit? I know the 200 series parts and the 700/900 parts have different parts needed, at least according to IPD. But the only different I can visibly see it the width of the mounting bushings on each end. Am I missing anything?
Little victories. But I still hate wiring.