Does your ABS light also come on at the same time? If so, your overvoltage relay is going out, or has a loose connection. When it starts working again, it will start idling normal and the glow light will come back on.
--- Kaleb C. Striplin Cox Auto Trader 730-Tulsa FSBO Supervisor ----- Original Message ----- From: "OK Don" <[EMAIL PROTECTED]> To: "Mercedes Discussion List" <Mercedes@okiebenz.com> Sent: Tuesday, December 18, 2007 10:24 PM Subject: [MBZ] Glow light - '90 300D 2.5 > The glow light has started acting strange in the '90 300D 2.5. It > doesn't light when you turn the key to the glowing position (I did > verify that the plugs get electricity in this position), the car > starts right up, idles faster and rougher than usual, then about 30 > seconds later, while driving down the street, the glow light comes on, > and stays on for 30 seconds to a minute (haven't timed it - seems > forever), then eventually goes off. At the next stop, the car idles > normally. > I assume the glow light issue is the glow plug relay, but what about > the idle - I'm guessing the electronic idle controller is wonky? Are > the two electrically related somehow? > The glow plugs and the relay fuse were replaced last Spring. > > Any guesses, or informed opinions? > > -- > OK Don, KD5NRO > Norman, OK > "There are three kinds of lies: lies, damn lies, and statistics." > -Benjamin Disraeli and/or Mark Twain > '90 300D, '87 300SDL, '81 240D, '78 450SLC, '97 Ply Grand Voyager > > _______________________________________ > 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