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Old 11-14-2008, 09:05 AM
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Join Date: Apr 2006
Location: Ohio
Posts: 94
Poor acceleration off the line

Hi all,

I'm in information collecting mode so next time I have some free time I'll address a couple issues.

My '87 300e is running very well. Starts well, idles well and once rolling feels as powerful as ever. Lately though is seems a bit of a dog from a stand still, so much so that my wife has commented on it. Since everything else seems fine, any suggestions??


Bob Kopicki
Massillon OH
'97 VW Cabrio (POS)
'93 Miata
'87 300e
'76 GMC C-15
'67 TR-4a
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Old 11-14-2008, 01:23 PM
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Are you describing a slight hesitation on acceleration? I suppose there are numerous possibilities. I know that when my 87 Supra did that it meant it was time to clean the electrodes in the distributor cap (or get a new one, but I found cleaning it worked just as well). So that is my .02. Pull it off and check the 6 contacts and if they have crust on them then scrape it off with something sharp like the end of a small file. Or get a new cap. If it is more than just a momentary hesitation then it is probably something else.
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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Old 11-14-2008, 07:17 PM
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Red Line's fuel treatment might help.

Gone to the dark side

- Jeff
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Old 11-14-2008, 08:30 PM
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Join Date: Oct 2004
Posts: 4,200
From the description it seems as if you are having issues with fuel delivery, most notably acceleration enrichment. The EHA controls delivery of fuel and can cause low power when it is on the way out. Reading the lambda can give you an idea if it is functioning correctly. It's a pricey little bugger so you want to know it will resolve the issue before shelling out the cash.

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Old 11-15-2008, 06:06 AM
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Is it the transmission not shifting correctly? The adjustment cable could need attention.
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Old 11-15-2008, 03:53 PM
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Join Date: Apr 2006
Location: Ohio
Posts: 94
Thanks everyone for your input. I replaced the cap, rotor and plugs 15k ago. I'll pull the cap and clean it and maybe change the plugs, but I suspect fuel delivery. Tranny also seems fine, shifts fine so far. I messed with the eha once before with less than acceptable results, if it gets worse I'll take it to my MB guy.

Thanks again,

Bob Kopicki
Massillon OH
'97 VW Cabrio (POS)
'93 Miata
'87 300e
'76 GMC C-15
'67 TR-4a
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