I've noticed idle slowing slightly several times recently and very rough, hood shaking, car loping/rocking - began to think bad engine mounts.
Wilton ----- Original Message ----- From: "Peter Frederick" <[EMAIL PROTECTED]> To: "Mercedes Discussion List" <mercedes@okiebenz.com> Sent: Tuesday, June 17, 2008 10:32 PM Subject: Re: [MBZ] 91 350SDL tac > That's exactly what it does -- it conditions the current for the > engine controls and the tach signal is from the crank position > sensor, so if it's intermittant, the usual failure mode, the tach > signal will vanish as the electronics switch off. Your idle will go > to the mechanical stop at the same time, quite slow and rought, but > usually the engine will not stall. > > Not sure where it is on the W126, but it's the relay with fuse on > top. Check the fuse first, but usually the solder has cracked on the > pins and it's not making contact and must either be replaced or > resoldered. > > Peter > > > _______________________________________ > 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 _______________________________________ 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
