In a message dated 9/24/2007 7:47:29 A.M. US Mountain Standard Time, [EMAIL PROTECTED] writes:
I took a road trip last weekend to Long Island to meet a guy that successfully replaced his W140 rodbender diesel engine (603) with one from a 1998 E300 (606). So I'm heading back last night and have been driving for 6 hours and pull into a rest area to take a nap and the engine dies as I'm coasting down the exit ramp. I have just enough momentum to coast into a parking spot. Turn off the car, wait a minute. Turn it on and crank it. Engine turns over, does not start. Repeat process with foot on the gas and it starts right up. Let up on the gas and it dies. No lingering sputtering. It just stops dead. I'm able to move into a secluded parking spot using both petals and take a 3-hour nap. It was maybe 52F outside. I wake up and have the exact same symptoms. I forge ahead hoping not to run into construction traffic. Once I get on the highway I realize I have to pee and as luck would have it, I'm right at the Ohio border and pull into another rest area 15 minutes later. Now when I let my foot off the gas, I'm idling at ~400 rpm. Better... I turn off the car. Do my business. Come back out and the the car starts right up (no petal) and acts normally with an idle at ~600 rpm. Been fine ever since. Any ideas? Dave, Sounds like a classic variable resistance problem due to oxidation of contacts at one or more wiring points along the circuit that controls the idle. Mercedes has had a long standing problem with plating on various connectors, etc. Your problem could have been aggravated, and cured, by changes in humidity. I would start by pulling each of the connectors on the engine and just slide them in and out a couple times. Especially the coolant temperature sensor, the over voltage relay, and the connections on the Injection pump. Replacing 10 year old fuses is definitely worth doing! Rusty has the good ones. Wasn't the engine compartment wiring harness biodegradability an issue in 94? Just my $0.02 Jim Friesen Phoenix AZ 79 300SD, 264 K miles 98 ML 320, 152 K miles ************************************** See what's new at http://www.aol.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
