Have you got the vent metal pipe between water pump housing and cylinder head fitted. Perhaps its blocked. This assists with removing air trapped in head.
Peter -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: 08 March 2007 01:58 PM To: Mercedes Discussion List Subject: [MBZ] Cooling System Technical Help 1979 240D 1. My temperature gaugee (which is the combo fuel gauge, and lube oil pressure gauge) is very speratic flipping around alot. I changed this whole gauge unit out, same thing with the replacement, Temp gauge bounces. A) next step (????) change out sensor at engine. ??? I am going to try this... is this the forward sensor or the after sensor on the left side of engine block. Has any one done this job is it in a "thermo well" or when I pull it does the sensor sit in the coolant and will leak. Any type of sealant when I screw it back in please B) Can start car and run from a cold start for 400 miles not problem. If car comes to idle or if leave parked and shut off for a few minutes, and reastart and get on highway can only sometime experience over heating. ~~ If it is an air issue, can can air pocket in the thermostate housing and cause it to "close" stop flow to radiator becuase the air is cooler than the coolant?? ~~Belts are tight to water pump, and when at highway speed not over heating is experienced if started from cold ~~ could a small leak in the heater core (no steam or fog or liquid noticed in car) cause the build up of air in system?? Please help thanks Regards Tom Scordato 1979 240D 115K miles _______________________________________ http://www.okiebenz.com 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
