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  #1  
Old 06-17-2014, 09:31 AM
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acceleration problem

car his minimal power when accelerating. on sine occasions I will accelerate and have my foot all the way c down and the rpm well rev up but I will only be stuck at about 45 mph. My take off is really sluggish as well. car bogs down and will only go about 20 mph even when flooring it. It does eventually go faster but I'd say my 0-60 time is at least 20 seconds.. Anyone got any ideas?
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  #2  
Old 06-17-2014, 12:49 PM
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is this on your 2.6?

plugged cat?
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  #3  
Old 06-17-2014, 04:30 PM
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yes 2.6. don't think it's the cat.....seems like something else, but not sure what. transmission maybe? engine?
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  #4  
Old 06-17-2014, 04:36 PM
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hmm why don't you think its the cat?

how does it rev in neutral?

Any fault codes from the CIS x11 port?

observe throttle linkage in the engine bay? does it actually move all the way?
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Check here for compatibility, diagnostics, and availability!

82 300SD 145k
82 300SD 265k
87 420SEL 230k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k
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  #5  
Old 06-17-2014, 05:13 PM
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it revs fine in neutral. I get fault code 11 and 17. cat is pretty new and plus I thought I had a problem with cat before and I had it checked about 2 months ago
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  #6  
Old 06-17-2014, 06:07 PM
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duty cycle measurement at the x11?
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82 300SD 145k
82 300SD 265k
87 420SEL 230k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k
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  #7  
Old 06-17-2014, 07:06 PM
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I have mine based on voltage.....outs between 4.6 and 7.1
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  #8  
Old 06-17-2014, 07:47 PM
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I meant 6.4 to 7.1
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  #9  
Old 06-18-2014, 08:02 AM
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Quote:
Originally Posted by lsmalley View Post
on sine occasions I will accelerate and have my foot all the way c down and the rpm well rev up but I will only be stuck at about 45 mph.
This statement here sounds like excessive slip, pointing to a transmission problem. First step would be fluid level check.
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  #10  
Old 06-18-2014, 09:07 AM
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Any issues with the transmission prior to this event?

Does it shift gears? How poor or how well? Quality of the shifts?

Any chance of a video of all of this? Your descriptions will pale in comparison to a video.
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Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

82 300SD 145k
82 300SD 265k
87 420SEL 230k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k
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  #11  
Old 06-18-2014, 09:03 PM
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Checked fluid level while car was idling at operating temp and sure enough the level was low.....added some fluid and everything seems to be back to normal, won't know for sure until I get a fresh start tomorrow. Interesting that the fluid was low; My trans doesn't leak and I just had a used one put in back in December.
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  #12  
Old 06-18-2014, 09:19 PM
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RPMs winding up real fast and smooth but the car not going anywhere = tranny problem?
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  #13  
Old 06-19-2014, 12:56 AM
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Quote:
Originally Posted by liquiddog View Post
RPMs winding up real fast and smooth but the car not going anywhere = tranny problem?
pretty much....and I just had mine done in December, but it ess just low on fluid
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  #14  
Old 06-29-2014, 02:33 PM
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Acceleration problem: RESOLVED

Problem was a faulty throttle microswitch (part number 0025456814). Replaced part, now everything is fine.
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  #15  
Old 06-29-2014, 03:56 PM
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I finally got mine to take off quick from the line when warm. I think it was really a collection of things that were old and messed up. I'm not a fan of "throwing parts" but with the age of these cars they do seem to need full rebuilds.
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