Re: 1995, 900 SET acceleration - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: 1995, 900 SET acceleration
Posted by Dean (more from Dean) on Wed, 10 Oct 2001 09:19:00
In Reply to: 1995, 900 SET acceleration, Stuart, Wed, 10 Oct 2001 08:24:40
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Use NGK bcpr6es11's. If your injectors have not been cleaned lately, use Techron Concentrate, Wal-Mart USA or other automotive supply shops. If never used before, two separate treatments might be needed. The throttle body (TB) may need to be cleaned. Remove the shroud around the TB by pulling up at the rear and sliding back. Remove the throttle body transition casting with two 10mm bolts, and with the hose clamp slack, lift the big end and pull out of the rubber coupling in one motion. There is an o-ring. Some silicone grease to lub it would be good practice. The deposits, caused by the PVC gases, accumulates where the throttle plate closes at the TB walls. This can be cleaned up with some solvent on a cloth. Carb cleaner not needed. Paint thinner works well and is safe for your skin.
The intake air sensor is easily unpluged. Note the large sharp edged flow section reduction at the TB transistion casting small end. If you blend that out power in improved and te engine runs smoother as well.
If you note oil in the intake tubing etc, that is normal. Some turbo seal leakage plus mostly oil from the PVC. Under boost the volume of blow by gasses is higher, and these flow through the larger pipe that runs to the intake upstream of the turbo. Don't forget to plug the air intake temp sensor back into the harness or the ECU will post a check engine light.
posted by 208.24.17...
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