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#1
06-22-2014, 06:01 PM
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"Need A Lil Help Fellas"
Hey guys I have got a 93' 300e 3.2L gas Mercedes. I am having problems I thought were fuel filter related, so I put one on and that wasn't the problem. When it is in park I can rev it up to about 1400 rpm and it cuts out, once the rpm's drop back down it runs smooth as can be. In drive it cuts out about 10 mph and then runs smooth again once the rpm's drop. Any and all help will be appreciated. Thanks!!!
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#4
06-22-2014, 09:22 PM
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Hmm, maybe the opposite of what I was thinking. When the IAC is controlling idle it's OK. But when the computer is controlling everything it's hosed. Sounds like you have a lot of troubleshooting ahead of you!
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#5
06-22-2014, 10:22 PM
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Carefully check your engine wiring harness. If you see any evidence of the insulation breaking down have it replaced tout suite.
A short circuit somewhere can eventually blow your ECU - (Ask me how I know)
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#6
06-23-2014, 07:38 AM
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Check the MAF.
__________________
Prost! 
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#7
06-23-2014, 12:49 PM
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My crank sensor plug in was loose,check fuel pressure if that does not fix it .
__________________
1999 w140, quit voting to old, and to old to fight, a god damned veteran
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#8
06-23-2014, 01:35 PM
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This car doesn't have an IAC. Idle is controlled by the throttle actuator (it's drive by wire).
Build the code reader. The car doesn't have a check engine light; you have to pull codes to see if the ECU sees any problems.
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#9
06-25-2014, 11:48 PM
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How to Build the Code Reader ? ? ?
From what I have seen, most of these things suggested do not match up with my symptoms. When I slowly depress the accelerator, it runs great until it reaches 1400 rpm's. It then falls on its face. If I let off the gas, it drops below the 1400 mark and then runs as good as it did before it cut out. These circumstances haven't changed it does it every time that I push on gas. It does the same thing in drive, it just cuts out about 10 mph and also picks back up as the rpm's drop. How do I build the code reader I read about in one of your replies.
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#10
06-26-2014, 07:22 AM
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It sounds like your not getting enough fuel.
Jim
__________________
14 E250 BlueTEC black. 45k miles 95 E320 Cabriolet Emerald green 66k miles 94 E320 Cabriolet Emerald green 152k miles 85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles
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#11
06-26-2014, 08:27 AM
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I think you are in limp mode. The electronic drive by wire throttle is completely dead. There is a conventional cable as a backup that will open the throttle butterfly too, but the ECU limits the maximum speed/power of the engine to almost nothing.
Try this thread for the code reader: CEL reader for dummies. Or try googling up "code reader Arthur Dalton site:peachparts.com" and reading through the threads.
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