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Car Forum / MINI / April 2004Unknown "Thing" near the radiator
Anyone know what the little cylinder mounted on the frame near the radiator is? It's on my '77 Mini, has a black connector wired to it, and two wires coming out of it - one black which goes to ground, the other blue which leads through the firewall and disappears into the carpeting. The top of the cylinder has a short section of hose on it - don't know if this is normally supposed to connect to something, but mine's cut off. Can't find it in any of the Haines wiring diagrams... Thanks, "Bud" Where abouts do you mean? What do you mean by "frame"? Is it on the bulkhead, the radiator housing, the inner wing or somewhere else? The Muffin Man > Anyone know what the little cylinder mounted on the frame near the radiator > is? [quoted text clipped - 10 lines] > Thanks, > "Bud" > Anyone know what the little cylinder mounted on the frame near the radiator > is? [quoted text clipped - 10 lines] > Thanks, > "Bud" From your physical description, it almost sounds like the coil (if you substitue 'hose' for 'HT lead')..... but they're usually on the other side of the engine bay. How knowledgeable are you on engines? Do you know what the coil looks like, and can say for certain that it's not that? Have you got a picture of it, which you could put on a website somewhere and provide a link to? Ben. My '88 Mini had something like this. It was fitted on the firewall side of the radiator cowl (the part of the bodyshell that the radiator recessed into). I always thought it was an electrical suppressor of some kind. Dean. > Anyone know what the little cylinder mounted on the frame near the radiator > is? [quoted text clipped - 10 lines] > Thanks, > "Bud" That would be the resistor for the dim dip headlights on an '88 Mini. UK Spec Minis in '77 didn't have that. Someones suggestion of an air horn compressor sounds good. How about an Anti Run on valve? That would have a couple of wires and a hose.  SignatureClive ICQ 36890776 www.minisquad.tk > My '88 Mini had something like this. > It was fitted on the firewall side of the radiator cowl (the part of the [quoted text clipped - 13 lines] > > The top of the cylinder has a short section of hose on it - don't know if > > this is normally supposed to connect to something, but mine's cut off. > Anyone know what the little cylinder mounted on the frame near the radiator > is? [quoted text clipped - 10 lines] > Thanks, > "Bud" Blue wiring can often be associated with lighting. Some markets got a dim/dip relay quite early on. Maybe it is this, although the location seems odd. Cars destined for cold climates got a carb suction chamber heater. These seem to have had a green feed wire though. Ah.... just thought what it might be! It's a compressor for air horns. That would explain the hose. Try wiring it to a battery and seeing if it blows air out of the hose. SignatureRgds Steve steve@dsnclassics.co.uk www.dsnclassics.co.uk Thanks for the ideas, guys - I was a little rushed in typing the original message, plus I thought it might be a "that's easy!" answer - or I would have been more specific. Steve's answer below sounds the closest based on my closer examination today. Here are more details: It mounts on the firewall brace just back of the radiator. As far as wiring, I traced the single blue wire (which is fed along the firewall with its own protective tubing) to the point where it goes through the firewall. It has its own point of entry, just below the fusebox. It then joins the two reverse-switch wires and leads down to the gearshift, where there's a connector - the other side, going under the car, is a green/purple wire. I didn't bother to raise up the car to trace it further! As far as the little cylinder itself: it's 7/8" diameter, just over 1" long, and has a 1/4" (outer diameter) hose attachment at one end. There is a flow-direction arrow on it. The other end has a connector with two outlets, it appears. None of these flow connectors are hooked to anything, so whatever it is, it's not performing a useful function now. There's a part number on it, AUU110, and the number 300 underneath it. If I blow into the inlet, air flows out the sideways-direction outlet. When I apply 12VDC power to its wires, it clicks and NO airflow is possible. So - somehow it regulates airflow for something, and must receive power from something at (or through) the gearshift area, possibly the reverse switch. I imported this Mini from Denmark (to Oregon, USA) about a year ago. Any more ideas? Quite a mystery! Thanks. > Cars destined for cold climates got a carb suction chamber heater. These > seem to have had a green feed wire though. > Rgds > Steve > steve@dsnclassics.co.uk > www.dsnclassics.co.uk > Thanks for the ideas, guys - I was a little rushed in typing the original > message, plus I thought it might be a "that's easy!" answer - or I would [quoted text clipped - 27 lines] > > Any more ideas? Quite a mystery! Thanks. It's a vacuum valve. Typically used for controlling vacuum to things like an idle adjusting diaphram device on an air conditioned carburettor car. I've never seen one fitted as original equipment to a Mini, but if it were routed to the inlet manifold it might be used to lean off the mix when the ignition is turned off to prevent running on. It sounds like it's been added to the vehicle long after it was built? Hi, Sounds like the anti-run-on valve. When the engine is running, the valve is closed, When you switch off, the valve opens and allows a large amount of air into the carb. This weakens the mixture so much that the engine cannot "run on". This is what Clive suggested it might be. Keith > Thanks for the ideas, guys - I was a little rushed in typing the original > message, plus I thought it might be a "that's easy!" answer - or I would [quoted text clipped - 34 lines] > > steve@dsnclassics.co.uk > > www.dsnclassics.co.uk Thanks to both of you - that does sound like what it is. It does appear to be original equipment, but taken out of service. There is a built-in nut where it mounts to the firewall brace, so to dismount it, all I had to do was get in there to undo the bolt. Perhaps I'll prop up the car today and see where that wire goes at the gearshift! Thanks... > Hi, > Sounds like the anti-run-on valve. When the engine is running, the valve is [quoted text clipped - 3 lines] > > Keith As a follow-up: I crawled underneath the car and found the wire goes to a little switch at the gearshift area, just on the other side of the reverse switch there. I looked through the Haines manual and I think I found it, finally: seems the 1988-on carburettor Minis had a "vacuum solenoid valve" wired through green and green/slate wires to an "emission control valve switch" (parts #77 and 75 respectively on pp.12A-37 & 38). Mine was not hooked up, but it gives me reason to believe now that my chassis was originally c.1988, though the wiring harness in it now is not that new. For example, I do have a starter relay between the ignition switch and the solenoid, but I don't have a dim/dip relay. Figuring out this imported Danish Mini can take some detective work, obviously... Graham W wrote: >It's a vacuum valve. Typically used for controlling vacuum to things >like an idle adjusting diaphram device on an air conditioned carburettor >car. I've never seen one fitted as original equipment to a Mini, but if >it were routed to the inlet manifold it might be used to lean off the >mix when the ignition is turned off to prevent running on. It sounds >like it's been added to the vehicle long after it was built? |
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