Post-Hwy Stumbling
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MBWorld Fanatic!
Joined: Jun 2005
Posts: 1,480
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From: Socialist West Coast
95 E320, 19 Ram 1500 Hemi, 21 GLS 580(wife)
Post-Hwy Stumbling
Curious to know if anyone has had the following issues and been able to track down the culprit.
So my 300TE runs great, I have installed a new H20 pump(yesterday), new OVP relay, new plugs/wires/cap/rotor, serpentine belt, and the engine itself has had it's oil changed every 3000mi and the cleanliness of the camshaft and valvetrain would prove it.
My problem with the car happens only ocassionally when I have been running smoothly at about 70-80mph for 30 min or more, and when I get off the highway and come to a stop at the intersection, my m103's idle and oil pressure drop. The idle goes lumpy to around 500+-100rpm and the oil pressure drops to just below the #1bar. Because the car runs so well besides this, I am curious if it could be the fuel relay? I have tried cleaning the idle control valve but it wasn't dirty, but I shot some lubricant in there just to make sure. If the car sputtered at higher speeds I would question the fuel filter more( which I will replace anyway soon), So it leads me to think it might be the EZK which I have just barely begun to study. I believe it is related to the vaccum and the ignition. I will look into it more.
Your Thoughts?
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So my 300TE runs great, I have installed a new H20 pump(yesterday), new OVP relay, new plugs/wires/cap/rotor, serpentine belt, and the engine itself has had it's oil changed every 3000mi and the cleanliness of the camshaft and valvetrain would prove it.
My problem with the car happens only ocassionally when I have been running smoothly at about 70-80mph for 30 min or more, and when I get off the highway and come to a stop at the intersection, my m103's idle and oil pressure drop. The idle goes lumpy to around 500+-100rpm and the oil pressure drops to just below the #1bar. Because the car runs so well besides this, I am curious if it could be the fuel relay? I have tried cleaning the idle control valve but it wasn't dirty, but I shot some lubricant in there just to make sure. If the car sputtered at higher speeds I would question the fuel filter more( which I will replace anyway soon), So it leads me to think it might be the EZK which I have just barely begun to study. I believe it is related to the vaccum and the ignition. I will look into it more.
Your Thoughts?
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Joined: Aug 2004
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From: Richmond, Va.
1991 300E
I had an M103 that would do the same thing, mine was a '91 300E. On occasion, when I would slow down to go through a toll booth on the highway it would simply cut off, like it was starved for fuel. It would immediately fire right up again and idle fine. It only happened in warm weather also. I changed the fuel filters and plugs, but never solved the problem, a lady plowed into me and solved it for me, permanently.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2005
Posts: 1,480
Likes: 2
From: Socialist West Coast
95 E320, 19 Ram 1500 Hemi, 21 GLS 580(wife)
Originally Posted by mhorn
I had an M103 that would do the same thing, mine was a '91 300E. On occasion, when I would slow down to go through a toll booth on the highway it would simply cut off, like it was starved for fuel. It would immediately fire right up again and idle fine. It only happened in warm weather also. I changed the fuel filters and plugs, but never solved the problem, a lady plowed into me and solved it for me, permanently.
I just totalled my 400E less than a year ago, I don't want to solve anymore mercedes maint. issues that way, it sucks donkey *****.
And, zebras? horses? I am guessing this is a think simple first phrase?
