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Rough idle
I just replace my header gaskets and did some other work and now the engine idles rough (around 800 RPM) and when I push on the accelerator it goes down in RPM (like it is about to die) and then back up again. Any ideas what could cause this? Could be totally unrelated to the headers. I also was attempting to remove my AC but decided against it so maybe something got screwed up in that process.
I'm supposed to track it Sunday so any help would be great! Thanks
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Current Porsches '10 Panamera 4S, '66 912, '90 928 GT, '83 944 Track Car Past Porsches '06 997 C4S, '68 912, '99 996 C4, '97 Boxster |
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05-31-2013, 08:34 PM
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Could be a vacuum problem. Did you disconnect any of the large vacuum lines or air hoses under the intake like to the idle control valve?
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06-01-2013, 04:27 AM
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Yeah, I think I did. One was the vacuum reservoir broke and another was a plug I pulled out down under the air filter box when I removed it. How do you fix that?
Thanks
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Current Porsches '10 Panamera 4S, '66 912, '90 928 GT, '83 944 Track Car Past Porsches '06 997 C4S, '68 912, '99 996 C4, '97 Boxster |
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06-01-2013, 05:39 AM
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Mein Gott!
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I'm thinking vacuum as well. Sucks especially after that hard job, but maybe the gasket(s) weren't perfectly aligned when installed, or a line now has a tear in it from being moved around when you were digging into it.
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Johnny 1987 944S 1984 944 (R.I.P.) 1972 Triumph TR6 - 100% trouble free between breakdowns 2003 BMW 325xi |
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06-01-2013, 07:33 AM
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944 addict
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It's not that terrible. Get a copy of the vacuum line routing diagram from Clarks Garage and go from there. You mentioned a broken plug near the air box. Can you be more specific about this fitting and it's precise location? I may have an extra one.
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3 944's, 2 Boxsters and one Caman S, and now one 951 turbo. Really miss the Cayman. Some people try to turn back their "odometers." Not me. I want people to know 'why' I look this way. I've traveled a long way and some of the roads weren't paved. |
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06-01-2013, 07:41 AM
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Guys, thanks for the help. You all pointed me in the right direction. It turned out to be simply a disconnected thin hose by the intake manifold that must have slipped off while I was working around there. Problem solved
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Current Porsches '10 Panamera 4S, '66 912, '90 928 GT, '83 944 Track Car Past Porsches '06 997 C4S, '68 912, '99 996 C4, '97 Boxster |
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06-01-2013, 08:19 AM
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Vintage
Porsche 944 NA
1986 Porsche 951
