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  #1  
Old 02-22-2007, 12:32 AM
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Location: New Orleans LA
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Son's 1994 E320 won't rev over 4000 rpm

This all started after my son had a front end collision and i have replaced all of the damaged parts except for the headlights and the hood and grill
no check engine light no codes where do i start to look
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  #2  
Old 02-22-2007, 12:48 AM
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Some things to check

With a front end collision, I would check vacuum advance to see if it is functioning properly. Maybe a vacuum line came loose or broke. Possibly another injury to spark advance. Otherwise, check the vacuum and see what it does at 4000 rpm. If it drops like a rock, you probably have back pressure from a plugged exhaust.
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Old 02-22-2007, 08:34 AM
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91 300CE M103: 80 450SEL
 
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Maybe a replaced part was the wrong one for your car? Like an ignition unit for a four cylinder rather than a 6 cylinder, that would limit the revs. Someone more knowledgeable may be able to confirm this.

Gerard
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Old 02-22-2007, 09:02 AM
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If you are talking 4K lmit in "N" or "P", that is normal torque converter protection rpm limitation. Please specify...
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Old 02-22-2007, 12:04 PM
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Quote:
Originally Posted by Arthur Dalton View Post
If you are talking 4K lmit in "N" or "P", that is normal torque converter protection rpm limitation. Please specify...
Exactly. I discovered this years ago when I revved the motor while idling in the driveway. Rpm-limited at 4K...
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  #6  
Old 02-22-2007, 03:35 PM
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rev limit

That could be it wastesting everyting in the shop checking for leaks
i didn't know about the rev limit in park thanks for the info. i thought
someone would know somithing. I still have not put it on the road yet
i will post back to let everyone know
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Old 02-22-2007, 04:26 PM
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<>

Yeah , they have that limit for in the shop cuz they don't want you going more than 75 MPH in the garage ...
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