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#1
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W140 '99s50 stutter
(195K miles) Always stutters at idle when is warming up. High pitch noise followed by stutter... high pitch.... stutter etc. Once auto is warm no more stutter; idle is smooth. Any ideas?
Thanks!! |
#2
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Try to pull the codes.
__________________
Master Computer Engineer, A+, Network+, MCP/MCSA/MCSE 4/2k/2k3 - Messaging, MCTS, MCITP, MCT, Brainbench, ICDL and starting Ph.D 380SE 1984 <------- Totaled by flipping accident 300SE 1988 <------- Sold Volvo S70 2000 <---- 4 family Opel Omega 2002 <-- 4 family 560SEC 1989 <------ Sold 560SEL 1990 <------ Sold 560SEL 1991 <------ 4 my mother 560SEL 1989 <------ Sold 600SEL 1992 <------ Current http://search.ebay.com/_W0QQsassZkhazenzcc |
#3
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code is PO410. When the high pitched sound come on there is one click from under drivers side dash(like a switch sound) then stutter begins and fade away after 10 or 15 seconds. It repeats this until engine is warm-between 8 and 9 on gauge; then it runs smooth. This causes the CEL to come on. When I travel which is often, I can reset the light and jump on the interstate and drive hundreds of mile without the light coming on. But once the auto has cooled and I come to a stop light it begins again.
MBD |
#4
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Any Ideas?
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#5
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Quote:
Brett
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1997 S600 sedan |
#6
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Can this cause a reduction in gas mileage?
There are two plastic thin long straw like pieces that come off the drivers side and feed back toward the carb. Are these the secondary vacuum lines you speak of? They seem to be brittle. |
#7
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Check the black rubber ends. . . those tend to dry out b/c of the heat and then develop hair line cracks.
With the high engine heat, the 'plastic' lines get "hard" but normally don't break . . . . don't try to bend them b/c they will crack. If you have, then it probably should be replaced. |
#8
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The rubber ends are pliable and still soft. Does someone have a picture which shows where I need to check for the secondary air leaks?
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#9
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Quote:
Brett
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1997 S600 sedan |
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