开云体育

Motor Noise After Cooling Fans Stop on 2000 Eurovan Camper

Russell von Koch All Messages By This Member #162307 Hello EVC group members. This is my first post after being a follower for about eight years and consequently learning more about my van.? This week, after driving my 2000 camper about eight miles back from my nearby rural town, I turned into my street and began hearing an odd noise from the engine compartment. ?When I pulled into my garage, I turned off the engine and the fans ran normally and then shut off. Oddly, an electric pump-like motor noise continued for about five minutes. It seemed to be coming from the bottom of the radiator and there was a pulsing in the lower radiator hose. The same noise occurred a few days earlier after similar driving conditions, but stopped sooner. I just had the water pump replaced with a new GoWesty metal impeller unit and the thermostat was replaced about 5 years and 10,000 miles ago. ?Any suggestions or advice would be greatly appreciated. Russ
Bob Williams All Messages By This Member #162308 After-run pump circulating water.
[email protected] All Messages By This Member #162309 Russ, there is a secondary water pump that is intended to cool for a period of time after a drive period.? I have no personal experience with this (can't say exactly how it works) and have not tested this, so can't speak further.? It could be that this circuit is working correctly.? You don't say your mileage-? that helps. v/r, Mike
[email protected] All Messages By This Member #162310 This is timely. Yesterday, for the first time in 10 years of ownership, I just noticed this same sound in our 2000 Eurovan and was concerned as well. Glad to hear it's normal, but it is weird I have never heard it before in 50,000 miles of use. 109,000 on the van. David 2000EVC On Friday, April 2, 2021, 7:58:55 AM PDT, Russell von Koch via groups.io <moabdallas@...> wrote: Hello EVC group members. This is my first post after being a follower for about eight years and consequently learning more about my van.? This week, after driving my 2000 camper about eight miles back from my nearby rural town, I turned into my street and began hearing an odd noise from the engine compartment. ?When I pulled into my garage, I turned off the engine and the fans ran normally and then shut off. Oddly, an electric pump-like motor noise continued for about five minutes. It seemed to be coming from the bottom of the radiator and there was a pulsing in the lower radiator hose. The same noise occurred a few days earlier after similar driving conditions, but stopped sooner. I just had the water pump replaced with a new GoWesty metal impeller unit and the thermostat was replaced about 5 years and 10,000 miles ago. ?Any suggestions or advice would be greatly appreciated. Russ
Phil #162311 Indeed as others have said, it’s the secondary water pump. I occasionally make an effort to notice it so as to confirm it’s functioning properly, typically twice a year, as well as the fans, after engine shutdown, (which are very obvious). it’s just one of those items I watch to make sure all is happy. ?I’ve replaced mine once, long ago, at about 100 kmi, when it started to fail, only functioning when tapped on. The replacement has worked for over 180k, so I figure it was a quirk, probably due in part to salt on roads up north. ?It’s a real low hum typically. Phil B. 2003 EV WE 286 kmi
Maitland Kelly All Messages By This Member #162314 Just a heads up, these pumps should definitely be replaced after some years (2 decades or so). I had one fall apart on me while driving up the Grapevine into LA and that ended up causing an overheat condition that warped the block. It shouldn't generally make noise, you should just hear the fans running toggle quoted message Show quoted text On Sat, Apr 3, 2021, 04:59 Phil <apothecarymortar@...> wrote: Indeed as others have said, it’s the secondary water pump. I occasionally make an effort to notice it so as to confirm it’s functioning properly, typically twice a year, as well as the fans, after engine shutdown, (which are very obvious). it’s just one of those items I watch to make sure all is happy.? I’ve replaced mine once, long ago, at about 100 kmi, when it started to fail, only functioning when tapped on. The replacement has worked for over 180k, so I figure it was a quirk, probably due in part to salt on roads up north.? It’s a real low hum typically. Phil B. 2003 EV WE 286 kmi
Russell von Koch All Messages By This Member #162317 Bob, Mike, monicact, and Phil, Thanks for the informative replies. To my knowledge, I have not owned a vehicle with a secondary coolant pump before. My question at this point is whether or not the pump is working normally. I cannot ever recall hearing it run after the cooling fans stop and it is fairly loud. I am wondering if it might need replacement as it has likely been operating in the background without my noticing it. My camper has 132 K and I have had it for eight years and driven it about 36 k. Any additional insight would be greatly appreciated. Thanks, Russ
Phil #162318 Russ The secondary coolant pump is normally a low grade hum. ?If you cannot hear it take a stethoscope (you will need to lower the front of the belly pan, so 4 bolts not the rear two nuts) to and listen to it after stopping the (up to full temperature engine). ?If you cannot hear it, take a small rubber mallet and tap it lightly. If you still cannot hear it, check for voltage at the connectors to it. ?Assuming you get voltage showing (I believe 12 vts) if no sound, replace it. ?If no voltage, try driving to confirm it was fully up to temperature and repeat. A scanguage, if you have one confirms this, not the temp guage on the cluster (it will show 190 anywhere between about 170? And 210? Roughly). ?With 132 kmi you are probably due. Normally if I listen closely just after the engine turns off, and the fans are not running, I can hear the secondary pump as a very quiet hum if I go to the front of the radiators or put my head below the bumper, under these conditions, if the surroundings are quiet. If not I know it’s shot. This scenario is true for even a brand new pump. ?I’m sure mine is getting near replacement. ?By the way, my experience is that they make that hum until they don’t (in which it’s shot), and it’s not like it gets loud or makes some other noise before failing- it either works or doesn’t, if you need to tap it to get it going it’s shot. others experience might be different. ?Hope that helps. Happy trails Phil B 2003 EV WE AXK 286 kmi
Tabitha & Mark Reed All Messages By This Member #162319 I have replaced the brushes in these motors before, gotten a second life out of them.? The plastic gets brittle though.? It is a cool setup, the motor is not physically connected to the impeller, it is magnetic.? The motor spins and the magnetic attraction spins the impeller.
Tabitha & Mark Reed All Messages By This Member #162320 On my 99, there is a sensor that tells the after run pump to run.? So I would check for 12v at the pump when the engine is running or when off and engine hot.? I "think" that 2000 is the same, not sure about the rest.
Burton Trattner All Messages By This Member #162321 When the coolant gets too hot, and after you shut off the engine (Bad) the water pump keeps circulating the coolant until it cools down some.? The secondary pump is powered via a relay.? On my 99 Rilata at some time, it would not shut off.? Next day, i find a dead cab battery.? Ice relay is under the dash and only costs a few bucks at advanced auto.? I dont member the relay location tho. If you are running hot after a long hill climb and you want to cool down...dont shut off the engine.? Instead raise the hood and let the fans and circulation coolant dissipate the heat. Another trick if driving in steep mountainous terrain,? Do not use D.? Instead manual downshift.? This by passes the auto slip clutch which is what the small engine does if it needs to raise rpm for more power.
Domokos Hadnagy All Messages By This Member #162322 开云体育 You can also turn on the heater while going uphill to add another heat exchanger into the system! toggle quoted message Show quoted text On Apr 6, 2021, at 1:27 PM, Burton Trattner <btrattner@...> wrote: ?When the coolant gets too hot, and after you shut off the engine (Bad) the water pump keeps circulating the coolant until it cools down some.? The secondary pump is powered via a relay.? On my 99 Rilata at some time, it would not shut off.? Next day, i find a dead cab battery.? Ice relay is under the dash and only costs a few bucks at advanced auto.? I dont member the relay location tho. If you are running hot after a long hill climb and you want to cool down...dont shut off the engine.? Instead raise the hood and let the fans and circulation coolant dissipate the heat. Another trick if driving in steep mountainous terrain,? Do not use D.? Instead manual downshift.? This by passes the auto slip clutch which is what the small engine does if it needs to raise rpm for more power.

Previous Topic Next Topic