Re: Issues: - Saab 900 Bulletin Board - Saabnet.com
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If you don't know how old they are, you may want to consider *replacing* all of the vacuum hoses and the rubber bushings that hold the vacuum nipples into the valve cover and intake manifold.
Vacuum hoses may look good, but underhood heat can cause a multitude of small cracks that let air in when the hose moves.
The rubber bushings shrink after a decade or so of exposure to underhood heat and oil, they shrink.
My '89 SPG had vacuum hoses that looked good when I bought it when it was 10 years old. It had a very lumpy idle. But, after I replaced the vacuum hoses with silicone and replaced the bushings, the idle became rock-solid.
The bushings are fairly inexpensive at eEuroparts and silicone hose is around $1.50 or so a foot. It's well worth the money.
Also, make sure that your grounds are good and that the battery terminals are clean.
Posts in this Thread:
- ECU/Injector Compatibility, Scalera, Tue, 30 Jan 2007 20:29:12
- Re: ECU/Injector Compatibility, Hans, Tue, 30 Jan 2007 21:54:02
- Issues:, Scalera, Wed, 31 Jan 2007 19:34:31
- Re: Issues:, Scalera, Thu, 1 Feb 2007 10:36:06
- Re: Issues:, RS , Thu, 1 Feb 2007 11:12:18 <-- Viewing This Message
- Re: Issues:, oldsaab, Thu, 1 Feb 2007 03:57:19
- Re: Issues:, aalto, Wed, 31 Jan 2007 23:17:02
- Re: ECU/Injector Compatibility, aalto, Tue, 30 Jan 2007 23:19:34
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