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Registered
Join Date: Mar 2003
Location: South Bend, Indiana
Posts: 557
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won't idle when "semi-cold"
Specifics: 1980 911SC Targa
When I first start the car it idles fine for a few minutes (cold start is good). While it is starting to warm up (like after 1/8th of a mile) it will immediately die when I put in the clutch (when stopping). After it is fully warmed up (20 minutes of driving) it idles just fine. Any clues? Jim
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Jim 80 911SC Targa 75 914-6 3.2l Conversion 58 Triumph TR3A 07 Harley Night Rod Special, 08 buell 1125R, 08 Harley CVO Springer, 09 Harley Iron |
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09-08-2004, 06:21 PM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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If you let the car warm up while idling (not driven) what happens? What rpm? If you depress the clutch what happens? If you give it some gas what happens?
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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09-08-2004, 07:16 PM
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Registered
Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
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Re: won't idle when "semi-cold"
Quote:
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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09-08-2004, 07:47 PM
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Location: South Bend, Indiana
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I have not tried the warming up while idling..as it takes too long to get it warmed up enough to idle. When fully warm it idles at about 800-900 rpm. When dead on cold it's about the same (maybe a tad higher).
While it's in this "zone"...if i just keep alittle pressure on the gas peddle it will idle. It also "hunts" during this time if I have some pressure on the peddle...meaning the rpm's will flucuate up and down but won't idle steady. On the what happens if I depress the clutch...assuming you mean standing still and not in gear...acts the same whether clutch is in or out. Jim
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Jim 80 911SC Targa 75 914-6 3.2l Conversion 58 Triumph TR3A 07 Harley Night Rod Special, 08 buell 1125R, 08 Harley CVO Springer, 09 Harley Iron |
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09-08-2004, 07:48 PM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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I think you are running too rich. Have you checked your CO w/ a gauge?
You can try leaning it 1/8 turn and see if the symptoms continue. Let us know if this helps.
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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09-08-2004, 07:52 PM
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Registered
Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
Posts: 21,140
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Quote:
fwiw. cold starts at 60degF need about 2min at 1500rpm idle to reach about 175degF CHT. At around that temp combustion starts to become nice.
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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09-08-2004, 08:03 PM
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Registered
Join Date: Mar 2003
Location: South Bend, Indiana
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I'm traveling the next few days so I'll try some of this stuff this weekend...any other things I might try just let me know!
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Jim 80 911SC Targa 75 914-6 3.2l Conversion 58 Triumph TR3A 07 Harley Night Rod Special, 08 buell 1125R, 08 Harley CVO Springer, 09 Harley Iron |
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09-08-2004, 08:12 PM
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