Category: Volvo 850, S70, V70, V70 XC, C70 Forum

Moin Moin, I have the following problem. For a few days, my speedometer has been sporadically out. As soon as the speedometer spins, the cruise control and the odometer fail. What could this be?

Good day, I’m new here in the forum, had already read yesterday with you and describe the following problem. Wednesday I start the old Volvo V70 to go shopping. Jump on briefly, and go out again immediately. Otherwise everything in the green area, speed normal, no warning signals or messages. Several times tried, time and again the same game. Now as a woman I am not a car mechanic and have a towing to a workshop in which I was already, – organize The next day, the total disillusionment. Workshop called and said that they had read out, that the control unit would probably be defective. A new one would not be worthwhile for the old treasure (the Volvo), costs would be in the four-digit range. I knew that I could not afford it now. Moreover, the lamda probe would not be in order (I already knew that) and probably the compression in one of the cylinders would be a little too low. There I was fix and foxi. I had a little chat with friends and I found you here yesterday and read something. A friend of mine is an electrical engineer who said that we should expand the control unit and he would check the soldering points. My husband opened the hood earlier, we found the part, opened the door and looked stupid. There is only a box in the box. I took a picture once. Of course, I don’t know which part is missing now. where’s that left? Workshop certainly didn’t open it, they’re reading from somewhere else, or not? Can’t you reach anyone on Saturdays, of course. I’ll let you take the photo I just took, maybe you can tell me if it’s the engine control unit now what’s still in there and the immobilizer is missing or if there’s only one device in the Volvo. In the pictures I’ve seen so far, there were always 2 such boxes in it. , because a) I’m attached to the Volvo, b) I can’t afford a new car now, but I’m pretty dependent on it.

Moin Moin has a question. With my 850 the cooling water temperature rises again and again to the red area. The engine is within one kilometer to normal temperature and after another 4-5 kilometers it sometimes rises quickly to the red area. Water level is ok. and fan seems to do it too. Someone’s idea. Oh yes from the heater comes only a lukewarm ventilator.

Hi, I have to install a sound system in my 850 2.5 20V. Up to now only the front loudspeakers are installed in the amature board, but the others are also wired from factory. My problem is the cables probably do not arrive at the radio, because I first got 2 loudspeakers for the door loudspeaker shafts in front for the test (JBL). Their connection does not fit to those of the Volvo even though they should be suitable for it. You can connect them anyway, abe r they don’t make a sound of themselves. It also looks like the cables don’t arrive on the radio. Has someone similar experiences and has found a solution. Ps of course I also thought of simply rewiring the whole thing but that’s a huge wall since you can’t lead the cables to the door very easily in a 850er.

Good evening! I have used the search function actively in the last 1.5 hours, but I do not come closer to the solution. With about 6 months delay I had finally found and bought a suitable AHK fixing and e-set. Original Volvo part, only article number I can not find on it. In the FZG 2 plugs are installed – see picture. These are connected to the lamps, I have measured already with multimeter. The socket is the version with 13 connection point, has 2 plugs on it, a 6-er, a 4-er, 2 cables are loose. In the 6-er 2 cables are connected to a pin. In the box 2 cable sets were supplied, where 2 fuses were in the cables, but the plug types mounted on them were not found at all in the trunk. The seller bought this also so, but did not come to his project time => no info about it. Is it necessary to install fuses between the vehicle and AHK socket into the cable? Or can I install the socket infac h connected to the 2 plugs and is it finished? Thanks and greetings: Balázs

Moin together, yes, I made it, a screw around the control unit And yes I am a douche, because I didn’t want to hear and took a 4 nut. Meanwhile I also have E5-E18 at home, but it’s probably too late, the E5 slips over it. I had now sent me an E4 now, in hope it fits with hammer hits on the head, tried this on a removed screw, you can forget! Unfortunately it’s also the screw where you have little Is there any other way to do this?!), down above the automatic bell. LuFi box is outside and the rope pull is pulled to the side, free access to the screw…what to do??? I see for myself now two possibilities: 1. remove complete block and strangle screw according to known scheme or 2. carefully flex a slot with the Dremel and try to get to success with a slot nut. Does someone know a tool that could still save the situation? but I’m rarely stupid either. Greetings and thanks in advance, Markus.

Hello, I need your help again. My moose has a defect with ZV on the passenger side. Regardless of whether with remote control or key does not close and opens the passenger door. In addition, I noticed in the dark that when opening the passenger door the interior lighting does not concern. In order to unlock the door, I always have to pull up the pen from the inside and pull it down with my hand to lock it. Now I have already read that the actuator in the lock can break off. Since I noticed the light, I thought about the electronics. The red door light doesn’t shine anymore, but the mirror can still be adjusted normally. Maybe it’s worth noting that the driver can lower the window on the back right, but high only from the back is possible… Thanks already for your ideas and tips LG

Hello together… I have to bring my cruise control back to life in 850. Vacuum pump is installed and both air lines are in the driver’s footroom. Relay is plugged in and turn signal lever is also there. Could someone explain to me how I have to connect everything now…? I have tried it before, but unfortunately it is now so the car is gas by itself. The air balk at the accelerator pulls together and takes the accelerator over the joint as if someone presses pedal. Only w I am standing on the brake I hear a hissing and the speed goes back to idle…?! What’s wrong with me for God’s sake?

Hi guys, at the moment I’m building a power amplifier in the trunk that only reaches via remote. So I want to switch a relay between my duration plus and the remote connection that is best controlled via an ignition plus. My question is: Are there already existing lines in the trunk that I can use as relay triggers? I know why I don’t take remote from my Sc805? Because I can’t tap the signal from the middle pin of the 6Dins connector on Cinch. do you think of the idea of taking the plus from the petrol pump? Or maybe from the rear lights? Then theoretically the power amplifier would only be on if I had light on.

Hello to the round, I am usually on the road at the US-Car Forum, but I can also get in touch with the Volvo 850 of my wife here. Since the blower has always been strong at higher levels, I had read this topic here in the forum once. The replacement of the blower engine is probably to be solved. Lt. a very detailed thread would be to recommend the Einabu of a Bosch engine, parts No. 0130 111 134. I got this and wanted to make myself to the exchange today. As can be seen in the photos, the Bosch engine is too long. The shaft extends to <5mm to the upper edge of the fan wheel, while the shaft tip of the engine still installed ends at a full 3cm below the edge. I don't assume that the shaft of the new engine should rise into the fan wheel. Are there different variants of fan motors for the 850s? I now wanted a complete unit of Hell a (Behr), but these are not in stock anywhere. How is the experience here in general, are they organized only on order? If someone had a part number here (search functions by car type on various parts pages did not yield conclusive information !?). Sorry, I am here unfortunately (yet) not working at home Thank you in advance, Jo