Question about 1991 Geo Metro

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1991 Geo Metro Automatic/ Sputters, runs rough only in gear.

Sputters, runs real rough when I put it in gear, especially reverse. Runs ok when I am actually giving it gas on the road, just not when I have it in gear and am stopped, like at a light. Spark plugs, wires, dis. cap and rotor, all belts just replaced. Fuel filter or pump, or maybe timing??

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  • kevinm78 Mar 29, 2009

    Same thing, if anyone knows what causes this I would appreciate it. I think it might have something to do with the vacuum solenoid on the firewall. I had a code 51 and unplugged the hoses from this solenoid the wires going to it have no power. The valve is stuck in one position, I hooked the hoses up backwards and at least the engine light is off now. But don't know why the wires going to the solenoid don't have any power or ohms resistance. Would this be the ecu is not good. It looks like someone had replaced it before cause it has marker on it and says 1990 geo metro auto on it. It is a A2 ecu.

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Could possible be a bad or stuck vaccum advantace mechanism. Check for operation.

Posted on Apr 02, 2009

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