Tan, You must reinstall the thermostat before step 7. The thermostat when fully open routes coolant to the radiator instead of the bypass. Bruce
Tan Qu <[EMAIL PROTECTED]> wrote: Well, we have a lot good insight here. So here is what my plan is: 1. Remove the 2-piece fan shroud 2. Remove thermostat and bolt the thermostat housing back 3. Remove upper hose and overflow tank cap and fill the engine and radiator. 4. Close overflow tank cap 5. Start the engine 6. If coolant comes out the engine madly, pump is ok. Put back the upper hose 7. Let engine continue running with various speed. keep an eye on the temp gauge. 8. Turn off the engine. Hand check the radiator surface to see if there is any cold spot. 9. If all check out OK, I am out of ideas again. Tan --- Jim Cathey wrote: > > I don't have an infared temp meter so I have to > come > > up with something else to get the block temp. > > Harbor Freight has them on sale periodically for > $50. > Mighty handy. > > > Now, if the pump is ok, water should come out the > > upper radiator hose even with thermostat in, > right? > > Que? Flow direction is from top to bottom, and the > thermostat is in series with the top hose to the > radiator. Trampas' advice is good. > > If you insist in replacing the pump and it doesn't > help, be prepared for some ribbing! It _could_ be > bad, but it's highly unlikely. We will apologize > profusely if it _is_ bad, and say "Huh. One for > the books." > > > How likely is that the temp sensor is bad? Where > is > > It happens quite a lot, actually. I'm surprised we > all > forgot to recommend an independent test of the gauge > temperature. > > > the sensor located that is connected to the gauge? > I > > know there is one right below the thermostat > housing > > and one near the upper radiator hose. I actually > > disconnected both both the gauge still registered > > 120C. Is there a third temp sensor that I don't > know > > of? > > Look on the side of the head near the middle. Might > be kind of buried. > > -- Jim > > > _______________________________________ > http://www.striplin.net > For new parts see official list sponsor: > http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://striplin.net/mailman/listinfo/mercedes_striplin.net > _______________________________________ http://www.striplin.net For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net Bruce 82 300CD 334kmi 'His' 85 300CD 240kmi 'Hers' 75 240D 202kmi 'Donner' 77 240D 204kmi 'Blitzen' --------------------------------- Yahoo! for Good - Make a difference this year. From [EMAIL PROTECTED] Fri Dec 30 04:13:59 2005 Received: from xproxy.gmail.com ([66.249.82.192]) by server5.arterytc5.net with esmtp (Exim 4.52) id 1EsBeR-0006v4-2q for [EMAIL PROTECTED]; Fri, 30 Dec 2005 04:13:59 +0000 Received: by xproxy.gmail.com with SMTP id s11so1364927wxc for <[EMAIL PROTECTED]>; Thu, 29 Dec 2005 20:13:58 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=m6hdhxj2JmA/v+4gJhhNpdc7RuGZX5LGEDe6JAAy9iAB1cb12Bbim4pTjPdmYEKOEzNblNRIoR3rvCXQX6O7Yp6syN4lgys6y3hNsDBFY2MRWiS6U+wDVkMt0j4xz9P2HEMbwhk60HuAWeHql66zHwrqTCmhnlcMtK4Qi5i+y/Y= Received: by 10.70.118.1 with SMTP id q1mr9899894wxc; Thu, 29 Dec 2005 20:13:58 -0800 (PST) Received: by 10.70.123.14 with HTTP; Thu, 29 Dec 2005 20:13:58 -0800 (PST) Message-ID: <[EMAIL PROTECTED]> Date: Thu, 29 Dec 2005 22:13:58 -0600 From: OK Don <[EMAIL PROTECTED]> To: Mercedes Discussion List <[EMAIL PROTECTED]> In-Reply-To: <[EMAIL PROTECTED]> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline References: <[EMAIL PROTECTED]> <[EMAIL PROTECTED]> X-Antivirus-Scanner: Clean mail though you should still use an Antivirus Subject: Re: [MBZ] 126 X-BeenThere: [EMAIL PROTECTED] X-Mailman-Version: 2.1.6 Precedence: list Reply-To: Mercedes Discussion List <[EMAIL PROTECTED]> List-Id: Mercedes Discussion List <mercedes_striplin.net.striplin.net> List-Unsubscribe: <http://striplin.net/mailman/listinfo/mercedes_striplin.net>, <mailto:[EMAIL PROTECTED]> List-Archive: <http://striplin.net/pipermail/mercedes_striplin.net> List-Post: <mailto:[EMAIL PROTECTED]> List-Help: <mailto:[EMAIL PROTECTED]> List-Subscribe: <http://striplin.net/mailman/listinfo/mercedes_striplin.net>, <mailto:[EMAIL PROTECTED]> X-List-Received-Date: Fri, 30 Dec 2005 04:14:00 -0000 My 300D 2.5 got 33.3 MPG today on a 170 mile round trip at 75-80 with strong cross winds , two people, and running snow tires. -- OK Don, KD5NRO Norman, OK '90 300D, '87 300SDL, '81 240D, '78 450SLC The FSM created the Diesel Benz http://www.venganza.org/
