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#1
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2003 C320 running rough
The last few drives in my wife's 2003 C320 I noticed it was running rough.
I picked up a big bottle of Lucas fuel treatment and filled up the car with Super. She told me not to put super because it cost more. I found out she has been putting regular gas in the car for a year. I fussed at her and blamed the cars condition on low octane fuel. We ran out the interstate for 40 miles and back at about 75. When we got back it seemed to idle better, but it seems to want to stall at take off. Any ideas |
#2
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Your engine mounts or transmission mount is probably shot. The m112 engine is perfectly capable of running smoothly on 87 octane without any damage. The only down side is slightly reduced peak power. The stalling is a symptom of a weak fuel pump.
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CENSORED due to not family friendly words Last edited by tjts1; 12-19-2018 at 05:33 PM. |
#3
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How many miles are on the plugs? I see dirty throttle bodies cause the almost stalling when coming to a stop symptom.
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Jim |
#4
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Better buy her something good for Christmas, regular fuel won't cause a rough idle. About all that will happen is a slight reduction of max power due to ignition timing reduction. At part throttle you won't likely notice a difference.
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#5
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I would personally retract that statement. x2 on the motor mounts. Could be plug wires/connectors/plugs also I suppose depending on the age of those.
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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine) 1988 F150 144,000 miles (leaks all the colors of the rainbow) Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra |
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