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Registered
Join Date: Mar 2004
Location: Napa, Ca
Posts: 177
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REALLY ROUGH idle
Okay so my vacume lines are now... fixed... the car actually starts, just... idles REALLY low... like... 300rpm or less and is quite rough.
If i try and give it some gas, it dies. I will be replacing the fuel filter tomorrow... Any other ideas? Recap: Car has spark, fuel plugs get wet (fuel is being injected), fuel pump flows (did not check for proper rate, just know that it flows), replaced all vacume lines, car was in storage for a little over one year, put something in the gas to treat it if it had any water in it, and... well thats about it really. oh, replaced the battery. Any more suggestions? Thanks guys!
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1986 Porsche 951 Autothority Stage 2, Cat Delete, Shimmed Wastegate, hampsters on wheels 1985 Porsche 944 Stock (first car owned, Sold) |
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01-30-2007, 05:20 PM
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That Guy
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Is the car misfiring or just idling low?
What does the spark look like when you pull a plug wire, strong? Any obvious signs of vacuum leaks? I have a feeling your running very rich, anyway you can check fuel pressure? Could be a failed regulator. The idle thing could be a mis adjusted idle screw, but the car should not die when you give it gas.
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Jon 1988 Granite Green 911 3.4L 2005 Arctic Silver 996 GT3 Past worth mentioning - 1987 924S, 1987 944, 1988 944T with 5.7L LS1 Last edited by Techno Duck; 01-30-2007 at 06:12 PM.. |
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01-30-2007, 06:08 PM
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Location: Napa, Ca
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sparks look strong, no obvious signs of vacuum leaks (will check and check again to triple/quadruple verify), i think you might be on to something with running very rich but *shrugs*
Idle has never been adjusted, never needed to be. Any ideas of what a failed air flow meter does?
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1986 Porsche 951 Autothority Stage 2, Cat Delete, Shimmed Wastegate, hampsters on wheels 1985 Porsche 944 Stock (first car owned, Sold) |
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01-30-2007, 06:14 PM
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That Guy
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Not sure what a failed AFM will cause, but i know most of the time when things go wrong with it the car will start but die imediatley. Is the flapper door on the AFM stuck or anything?
Clarks-Garage has a good writeup on testing the AFM.
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Jon 1988 Granite Green 911 3.4L 2005 Arctic Silver 996 GT3 Past worth mentioning - 1987 924S, 1987 944, 1988 944T with 5.7L LS1 |
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01-30-2007, 06:17 PM
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Location: Napa, Ca
Posts: 177
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door is not stuck, checked that out earlier today... I'll check out the article on clarks garage. Its too freakin cold outside AHHHh
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1986 Porsche 951 Autothority Stage 2, Cat Delete, Shimmed Wastegate, hampsters on wheels 1985 Porsche 944 Stock (first car owned, Sold) |
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01-30-2007, 06:25 PM
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That Guy
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Cold in CA..???
 I thought it was always warm and 74 degrees over there  .Its 24 degrees right now, hasnt gone over 35 degrees in the last 3 days. I hate not having a garage!
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Jon 1988 Granite Green 911 3.4L 2005 Arctic Silver 996 GT3 Past worth mentioning - 1987 924S, 1987 944, 1988 944T with 5.7L LS1 |
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01-30-2007, 06:31 PM
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Redline Racer
Join Date: Jan 2007
Posts: 2,444
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Isn't there a test procedure for the AFM on clarks? That's what my car did when I forgot to plug the AFM back in after a disassembly.
edit: here's the article. http://www.clarks-garage.com/shop-manual/elect-22.htm
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1987 silver 924S made it to 225k mi! Sent to the big garage in the sky |
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01-30-2007, 06:35 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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i know how this sounds, but... are the spark plug wires connected to the proper cylinders?
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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01-30-2007, 06:41 PM
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Registered
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Location: Napa, Ca
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Oh, heh... HOME is in California...
Where i am at now is Oklahoma... i hate this god forsaken place.
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1986 Porsche 951 Autothority Stage 2, Cat Delete, Shimmed Wastegate, hampsters on wheels 1985 Porsche 944 Stock (first car owned, Sold) |
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01-30-2007, 06:57 PM
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Registered
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Location: Napa, Ca
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you bet your sweet buns they are, nynor.
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1986 Porsche 951 Autothority Stage 2, Cat Delete, Shimmed Wastegate, hampsters on wheels 1985 Porsche 944 Stock (first car owned, Sold) |
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01-30-2007, 07:00 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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Quote:
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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01-30-2007, 07:32 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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hmm... mine kinda ran like this (my '83) when i redid the cyl head. i forgot to connect a large vacuum hose on the bottom of the intake manifold.
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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01-30-2007, 07:37 PM
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Location: Napa, Ca
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the engine really just seems inresponsive to throttle control... my guess now would be its the AFM. I'll look into it tomorrow... i'll do that clarks garage test tomorrow... god i hope it doesnt rain...
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1986 Porsche 951 Autothority Stage 2, Cat Delete, Shimmed Wastegate, hampsters on wheels 1985 Porsche 944 Stock (first car owned, Sold) |
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01-30-2007, 07:42 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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mine did too (unresponsive to throttle control). the vacuum was so large that it idled horribly and would die if given any throttle.
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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01-30-2007, 08:10 PM
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^ +1
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Tom 1990 944S2 Cabriolet 2002 Chevy Silverado 2500HD 2003 Maroon Ford F350 dually |
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01-30-2007, 10:13 PM
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Quote:
Last edited by dangerous; 02-05-2007 at 07:12 AM.. |
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02-05-2007, 07:05 AM
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Registered
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Location: Napa, Ca
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Well thanks for all the advice guys, the car was put in the shop this morning... i dont have enough time to dork around with it as the toyota corolla i have needs to be worked on... its gotta take me 1600 miles late march... from oklahoma to good ole california.
The guy who is buying the car is paying the shop costs, which of course will be deducted from the sale price... i hope it doesnt cost too much, if not... oh well. I did abuse that car a bit!!!
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1986 Porsche 951 Autothority Stage 2, Cat Delete, Shimmed Wastegate, hampsters on wheels 1985 Porsche 944 Stock (first car owned, Sold) |
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02-05-2007, 01:44 PM
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Politically Incorrect
Join Date: Aug 2005
Location: Hoover, Alabama
Posts: 1,494
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...umm...guys...
...if the car sat "for over a year" I'm 100% sure he has bad gas - no, not the kind Beano will fix, but you can't reconstitute flat gasoline no matter what additives you use. Drain the tank and refill it with fresh gas.
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Edek '87 924S '91 535i |
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02-05-2007, 04:10 PM
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Registered
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Location: Napa, Ca
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well to be honest, the car did run like crap before i put it in storage, i figured it was because the vacuume lines were disconnected and blocked off. it sat for a year... crap... might be bad gas... i dunno..
well, i dont care anymore. I do... but its just better if i didnt. car is in the shop so whatever
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1986 Porsche 951 Autothority Stage 2, Cat Delete, Shimmed Wastegate, hampsters on wheels 1985 Porsche 944 Stock (first car owned, Sold) |
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02-05-2007, 05:20 PM
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I recently saw a post regarding disassembling the OEM Air Flow Meter and cleaning the electrical contacts to help restore acceleration. I can't seem to find the post again, but it had pictures and all of how to do it.
Anyone familiar with this post? |
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02-10-2007, 11:53 AM
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The Kraut Burner
The Bratwurst Burner
Das Boost
