1992 Tempo GL 3.0L missfiring

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1992 Tempo GL 3.0L missfiring

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Ford Forums >> Past Ford Models >> Ford Tempo/Probe >> 1992 Tempo GL 3.0L missfiring

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1992 Tempo GL 3.0L missfiring - 6/24/2007 9:35:44 AM

1992tempoGL

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Joined: 6/24/2007
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I have a 1992 Tempo 3 liter that seems to be misfiring. when it's idleing it bogs down every few seconds and the rpms drop and come back up quickly. it does this about once a second when in idle. when you try to accelerate from a stop it has no power and it jolts the whole car, it seems to smooth out slightly when you get up to cruising speed but it doesn't go completely away. i have already replaced the rotor, rotor cap, wires, plugs, air filter, fuel filter, and have ran two tanks with injector cleaner. but the problem is still there. i think that it might be either a bad injector(s) or bad oxogen sensor(s). but i need to narrow it down because i can't afford to replace both. Oxogen sensors run $60 each and it needs two of them. injectors run around $300 fro a set of six. i also ran the car on a code reader but it didn't come up with anything. has anybody delt with this problem or have any suggestions? any help is appreciated. thanks.