After that, you risk a catastrophic failure and a cooked engine. Yes, I know there are a million e-fan threads. Ac can switch the fan via j1939 and the engine can switch it via a pin. You also want to put in new Volvo coolant mixed 50/50 with distilled water. Since it is tightened against the other nut, turning it forces the whole stud to turn and spin out.
But yes all Volkswagens do that and it is intentionally designed that way you can park your car shut it off and sometimes not even hear the fan then all of a sudden after sitting there for a little bit the fan will come on it is perfectly normal. Clamp removal: if the clamps are original (you will know this because the teeth are cut into - but do not go all the way through - the metal), use a 7mm/9/32" socket to loosen them. It has a small amount of silicates to improve corrosion protection for lead and aluminum, but not so much as to precipitate out, and in addition uses an OAT package. Like the information I provided in my May column, AERA advises its shops to first use a DMM and measure the voltage potential of the coolant. For 900's the relay (black, with three connectors going into the bottom) is under the hood on the rad housing near the battery (driver side for turbo's, otherwise passenger side). Slip on the lock washers. This is the fuse for the after run pump and a blown fuse can result in fans not turning off. Top from Mike G. ] Even with limited mechanical ability, you should be able to change a thermostat on the 4 cylinder Volvo (assuming the problem is a stuck thermostat). Volvo fan won't turn off air. 30v for cast iron blocks needs further study].
Sent from my iPhone using Tapatalk. Dick's caution about clean mating surfaces is critical, and Chip is absolutely right about tightening carefully and using a cross pattern. Volvo fan won't turn off windows. The fan I bought pulls 1900 cfm on 10 amps. CAUTION: Make sure that these plastic clips are attached to the hoses and doing their job! Give serious thought to installing a loss-of-coolant sensor and an indicator light wired into your instrument cluster. Remove the driver side kickpanel (two plastic body mounts at the top, pull out. )
Response by Dave Stevens] For 940's with Regina FI (and earlier 740's) there is a temperature sensor in the top corner of the radiator above the transmission cooler lines. My nine-year-old 945T developed a very small crack in the top of the reservoir... it bubbled a bit when the engine was hot. Buy a "Level Guard" sensor Volvo p/n 3547710 and wire as noted below. Wiring: attach the fan ground wire to the thermostat. Conventional American coolant should provide better protection against solder corrosion, which can result in radiator tube restrictions and leaks. If not in defrost or AC then the hvac should not be sending a fan request unless head pressure is too high. Ground each component with the jumper wire and watch the meter. Volvo 940: Using a razor knife and some pliers, cut down the diameter of two female snap connectors and squeeze them so as to fit very tightly on the Level Guard lead connectors. How to Stop a Cooling Fan That Randomly Turns On/Off (Audi A4. The powertrain control module then sends a signal for the cooling fan relay to supply power to the cooling fan.
Google Heat soak for what it is. Gary Smith] To remove deposits and sediment in the reservoir, remove it from the car and use hot water and dishwasher detergent (like electra-sol, not the stuff you. Hose Re-installation. I will keep all this information if it happens to happens again.
Yesterday we ran into 99-degree heat and it never once ran hot. Glysantin orange-yellow with low silicates and organic acid corrosion protection (e. g., Zerex Extreme G-05). This would certainly explain my regular loss of coolant. Volvo 740: a) Drain coolant recovery tank and remove from car. As a side note, the often talked about all-metal heavy duty Nissens rad is apparently no longer available as of 2006 (some catalogues are currently out of date on this, although the images are usually correct). But don't rev the engine, as the garden hose usually can't keep up with the pump's needs, and you'll get pump cavitation. Put new o-ring on the lip of the new thermostat, put assembly in hole, put cover back on, tightened nuts snugly but don't tighten with all your might as the studs are in aluminum: tighten just enough to seal the o-ring. You need a short piece of 7/8" dishwasher drain hose and a 3/4" copper sweat coupling. If you can't hear the rattle, install the Level Guard and test it with a multimeter for resistance change as the tank is filled with water. )
When the engine is cold and levels are low the light will flicker when cornering. Once you remove the old one, ensure that the internal contexts aren't compromised. Cleaning the Reservoir. Jon Scheetz] After removing all the bolts and nuts attaching the water pump, including the bolt/nut to the heater pipe heading aft along the block, I discovered I could not remove the water pump. I put a coating of silicone on the top of the rubber piece before hanging the waterpump on the two studs. I also wanted to hear if it would happen again so I listened very closely for it. This extended drive usually led to further engine damage. Accessing the relay is fairly straightforward. I have a 1992 940 Turbo. Use Diagnostic Test Mode 3 to cycle the various system components including the fan -it's one of the last things operated as I recall.
NOW IS AN EXCELLENT TIME TO CHANGE YOUR TIMING BELT and tensioner. Heater Water Valve: see the FAQ file. Go to the hardware store and get a piece of clear vinyl hose to fit it, a couple of clamps, and a garden hose end fitting and attach it to the hose. The petcock to drain the engine coolant is behind the water pump near the pipe that connects to the oil cooler line. Hang new gasket on two remaining studs in engine block. So I am wondering if it was just because we had a snow storm yesterday. I set the heater on "high", disconnected the vacuum to the water valve to make sure it was open, disconnected the upper and lower radiator hoses and drained a large quantity of coolant out of the radiator, water pump and overflow bottle. Regarding the thermo, my understanding is that there are three main types. Pull off the upper radiator hose from the thermostat housing.
Inquiry:] B230F - I want to flush the cooling system, but the only block drain I see is a threaded male plug on the RH side of the block (kinda high) below exhaust manifold runners 1 and 2. Editor] In short, don't bother: while you can buy brass/solder construction radiators from Internet suppliers as well as local retailers, it frankly does not make any sense. Place silicone dielectric grease on the connection for corrosion protection and connect the ground wire connector to the other Level Guard lead. Transfer the blades and reinstall. The BEST quality hoses come from Volvo: they seem to last much longer than aftermarket hoses. Because your cooling system is so important to engine lifespan, this is one area in which you do not want to economize. 99, though (that's eBay). This shouldn't be allowed to continue as the cooling system pressure can rise, unnecessarily stressing the radiator and enough to vent at the reservoir cap and slowly lower the coolant level. If you feel a blast of heat, everything is fine.
We have in previous articles pointed out that today's coolant inhibitor packages contain a small amount of copper-brass protection, but may provide little protection if a radiator is made with high-lead solder. From beneath, remove the splash shield and loosen the bottom power steering pump mounting nut and bolt (this is almost impossible to loosen from above). It had a name brand, I think Flex-a-lite or Therma-cool, but it was universal in its application. But what often escapes detection is what is going on inside the hose. Pump Removal Notes: [Inquiry] I removed the timing cover and the six visible nuts/bolts, and tried to pull the thing off. See the Loss of Coolant section below. 00 bicycle pump (with built in pressure gauge) to the cap and presto. This wire was piggybacked to the wire. That is, DO NOT use oil or grease. Editor: this is for aluminum engines; anything over 0. Use a 3/4" barrel shaped expander plug such as Papco p/n 263548.
Turn the heater temperature control to "hot" to open the water valve. When refilling premix the coolant so that when you top off, the mixture is still 50/50. I doubt they will find the fan control module for $19. You will lose a little coolant, so have some new 50/50 ready to go.