2001 Saab 9-5 check engine light

2001 SAAB 9-5
158,000 MILES • 4 CYL • FWD • AUTOMATIC
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WILLIAMASTA
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  • 1 POST
Check engine light indicated p1100 code. I replaced mass air flow sensor but light came back on. When i use turbo in the yellow the car bucks. Could it be an air filter aor another sensor? Or is the turbo failing?
Dec 29, 2009 at 10:38 AM
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MNTHNY4
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  • 612 POSTS
OK check if u have a loose vacuum hose ,look for a valve mounted to firewall with a vacuum hose coming from turbo bypass valve ,look between intake manifold & brake booster assembly valve is mounted on firewall there ,also get turbo bypass valve vacuum tested ,check if it holds pressure ,if it does it is good .post back after u check .
Dec 29, 2009 at 8:19 PM