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Registered
Join Date: Jan 2008
Posts: 71
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Uneven accelleration.
87 n/a. Under full acceleration, there are brief hesitations as the RPMs build (flat spots?). Not severe, but definately noticeable. Have: replaced all vacuum hoses that I could get to, replaced fuel filter, new cap & rotor & waxed paint. All to no avail. It's the injectors, right? Suggestions?
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09-20-2009, 03:33 AM
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Ender751
Join Date: Jun 2009
Location: Dayton, OH
Posts: 6
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Quote:
check out this link: http://www.clarks-garage.com/shop-manual/elect-22.htm good luck
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- Nick 1987 951 Stock except for APE Performance Chip |
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09-20-2009, 04:45 AM
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Join Date: Jan 2008
Posts: 71
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Yeah, just read the same article.
I'll add it to the list of thing to do. Thanks.
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09-20-2009, 05:09 AM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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HondaDustR created a very good video on how to repair:
Air flow meter fix / refurb GL John_AZ 1988 924S + 1987 924S |
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09-20-2009, 06:03 AM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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09-20-2009, 04:26 PM
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Registered
Join Date: Jan 2008
Posts: 71
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Thanks.
You saved me a lot of money today. Thought it needed a new thread.
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09-20-2009, 04:40 PM
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Registered
Join Date: Sep 2008
Posts: 142
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How about the filter IN the tank?
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09-21-2009, 06:07 AM
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Registered
Join Date: Dec 2007
Location: Toronto, Canada
Posts: 175
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I chipped my car with a Lyndsey racing Max 944 chip and it smoothed out the acceleration, solved the hesitation issue in my car.
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*1988 944 NA with front end Turbo Conversion* *1968 400 cubic inch bored and stroked Firebird* |
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09-21-2009, 07:55 AM
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Registered
Join Date: Mar 2008
Location: Nashville, TN
Posts: 4,048
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Quote:
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09-21-2009, 11:56 AM
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Redline Racer
Join Date: Jan 2007
Posts: 2,444
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The problem is, under full acceleration (ie WOT), the DME ignores the AFM position. The WOT maps are 1 dimensional and are determined by rpm alone. I found that mine had some full throttle hesitation when the WOT switch wasn't working. It's an easy check using the pinouts on clarks garage. It could also be injectors or the fuel pressure regulator or damper. Vacuum leaks, old spark plugs, and shot distributor cap and rotor could also have something to do with it.
When I had the problem, the WOT switch was kind of flakey. I literally had to wire a pushbutton switch straight to the DME to fully determine that that's wat was going on. It was kind of cool, actually...sort of like a nitro button. It did run a lot smoother at high throttle with the DME WOT wires finally connected. I actually had to cut into the molded part of the housing of mine to solder jumpers between the connector pins and the switch inside. The connections between the connector and the switch inside the plastic must have cracked and the dumb thing's like $80 new. It's worked great ever since.
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1987 silver 924S made it to 225k mi! Sent to the big garage in the sky Last edited by HondaDustR; 09-21-2009 at 03:47 PM.. |
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09-21-2009, 03:41 PM
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