Trampas - You could also replace the relay with a jumper and see if the problem seems to go away.
Barry -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Trampas Sent: Thursday, June 15, 2006 7:02 AM To: 'Mercedes Discussion List' Subject: Re: [MBZ] 560SEL cuts off Jim, Thanks for the information. I will tie a test light to the fuel pump and one to the negative side of coil and test it. If it all looks OK I will add a Fuel pressure gauge to the mix... Trampas -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Cathey Sent: Thursday, June 15, 2006 9:44 AM To: Mercedes Discussion List Subject: Re: [MBZ] 560SEL cuts off > Does anyone else have a suggestion as to the culprit? Do I remember > correctly in that the fuel pump relay is known for bad solder joints? I don't think it's a particular problem, but it can happen. First I'd pull it and clean its contacts. It would be fairly easy to tap that signal with a wire to a meter so you could see if it was cutting out. Also, an ignition problem might not affect the tachometer given that there's a fair bit of circuitry betwixt tach signal and spark. -- Jim
