1993 Geo Storm loses power

1993 GEO STORM
147,500 MILES • 4 CYL • FWD • AUTOMATIC
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JEFFL6802
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  • 1 POST
when driving motor runs fine until have to throttle above 3500rpm motor then loses power til let up on throttle. have replaced plugs wires air and fuel filter also coil also have replaced entire exhaust header pipe back. also if u adjust distributor advance it gets a little better if u turn to retard timing it starts earlier.
May 16, 2008 at 9:06 PM
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RASMATAZ
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  • 75,992 POSTS
Inspect and test the throttle position sensor/check for an excessive exhaust backpressure. also do a fuel pressure to rule out the fuel pump
May 16, 2008 at 9:11 PM