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#1
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2.5 rough cold idle
When I started my car this morning, it ran rough for the first few minutes. Not a bad glow plug rough, no smoke. It would rev then shutter, rev, then shutter until it hit operating temp. What do you think???
1992 300D 2.5 Turbo 174,000 miles |
#2
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Try checking the glow plugs. The 602.962 motor does have a self diagnostic on it for the glow plugs, but you can have a bad glow plug and still not have the diagnostic light be triggered.
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#3
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CJ,
Thanks for the reply. I would imagine a rough idle rather than revving if it was a glow plug issue. Am I mistaken? -Slowmoe |
#4
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My gut says its not the glow plug. Sounds to me like an intermittent problem with an injector.
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MB 1986 190D in my past MB 1987 300E on the street MB 1994 'Smoke Silver' E420 in my driveway 1999 Mazda Miata in the fun stable 1964 E-Type Jaguar Coupe- Sold 1970 E-Type Jaguar Coupe- Sold 1968 Corvair Monza Conv. with Turbo Transplant- Sold 1986 Merkur Xr4ti- abandoned various mundane American autos If I'd known then what I know now... Hell, I'd probably still have done it anyways. |
#5
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A few weeks ago I finally got around to running some diesel purge through the beast. It still does this silly high-low idle revving thing until it reaches operating temp. I am imagining an electrical reley, auto-choke, throttle body position sensor or something like that that may be the culprit.
Any thoughts...?
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1996 (W210) E300D 86K - Traded in for a Lexus 1992 (W124) 300D 2.5 Turbo 202K - Sold 1983 (W123) 300D, 146K - Sold 1970 280S, 263K - Sold - Beginning of addiction |
#6
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I just drove 2700 miles from Southern California to Washington state and back over the holidays.
While in snow country, my glow plug light refused to come on when I turned the key. After waiting 30 or more seconds, the car fired right up, but ran rough. The glow light also came on -- after I started the car, but went out after a minute or so. After the car warmed up, the engine smoothed out and cruised for hundreds of miles each day. Upon my return, I discovered that the No. 4 plug was dead. New plug, problem gone. Good luck.
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'91 300D 2.5 Turbo 330K '00 VW TDI Golf, 190K '67 BMW R50/2 '73 Norton Commando Interstate |
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