

| Subject: | Re: intermittent radiator fan / overheating SOLVED |
| From: | bueses |
| Date: | Wed, 4 Oct 2006 14:35:02 -0600 |
on 10/4/06 2:21 PM, Mark Drillock at drillock@EARTHLINK.NET wrote: > Right in the 1986 Vanagon Owner's Manual, page 28, it says in bold text: > > "Do not stop engine immediately after hard or extended driving. Keep > engine running at increased idle for about 2 minutes to prevent > excessive heat buildup." Hmmmm!-I didn't know that-should I sell my westy now before it dies? Not! Pax, Tom > > Mark > > Ryan Shawley wrote: > >> Sam it took a second for this to click but I get what your saying! Honestly >> when I coasted to a stop in my parking space I was so happy to hear the fan I >> just turned off the van and hopped out. My temp guage stays rock steady but >> I'll be sure to remember this tip when when I hear my low speed fan kick on. >> Thanks for all the help the list has kicked my way. >> >> Ryan >> ----- Original Message ----- >> From: Sam Walters >> To: Ryan >> Sent: Wednesday, October 04, 2006 13:56 >> Subject: Re: intermittent radiator fan / overheating SOLVED >> >> >> Ryan, >> >> When the fan comes on in a parking lot and the engine is off, it is not >> doing any thing constructive for the engine. It simply cools the coolant in >> the radiator to the temp where the thermostatic switch turns off the fan. >> Since the water pump isn't working, the cooled coolant does not get back to >> the engine and the engine is left with quite hot coolant in it and is about >> as hot as it ever gets. It was hot enough to be putting out coolant that >> triggered the fan. >> >> After learning of this from the list, I now usually sit in the van with the >> engine running if the fan kicks in while I am parking or driving through a >> parking lot, driving up to my house (like about 15 minutes ago), so that the >> reduced temperature coolant gets back to the engine and cools it off. It >> doesn't take very long. With the pump running, the reduced temperature >> coolant doesn't cut the fan off until coolant has circulated and cooled the >> whole system. >> >> With my Syncro which has the Zetec conversion and OBD II monitoring via >> computer, I can see the dramatic and quick reduction in cylinder head temp >> that occurs when the fan kicks in and sends reduced temp coolant back to the >> engine. So, I know that what was posted in the past is true. >> >> Sam >>
Have something to add on this topic today? Revive this thread in the forum »