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Old 03-14-2002, 04:13 PM
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300d ROUGH idle!!!

What would some of the potential causes of rough idle be in a 1982 300D turbo.

Engine is smooth at acceleration but when you slow down and stop at a traffic light the engine is rough! Looking at it with the hood up, it rocks from side to side!!

220k miles. Don't know much about the service on the car. Guessing just marginal. Assuming not much more than oil changes.
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Old 03-14-2002, 05:06 PM
SW SW is offline
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Join Date: Aug 2000
Location: Houston, TX. USA
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I'd look at the motor mounts first.
2001 Dodge Ram 2500 Cummins Turbo Diesel - 4x4, auto, 3.54 gears, long bed
'92 300D 2.5 Turbodiesel - sold
'83 300D Turbodiesel - 4 speed manual/2.88 diff - sold
'87 300D Turbodiesel - sold
'82 300D Turbodiesel - sold
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Old 03-14-2002, 05:40 PM
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I would also do a rack pin adjustment on the IP. I was having the same problem and this simple adjustment cured the rough idle. Next I will tackle the motor/trans mounts as they are in need of a change along with new engine shock mounts.

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Old 03-15-2002, 08:29 PM
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Join Date: Dec 2001
Location: Goldsboro, NC
Posts: 31
Wayne: What is a rack pin adjustment of the IP(injection pump?). Injection timing?
'00 Mazda MPV Family's car
'83 300D 235,000
'84 109E 175,000
'74 280C 125,000 in garage; needs rehab or sell for parts???
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