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1991 Accord runing bad

Hello my car is A 1991 Accord with almost 200K miles. the problem is when the car is cold it runs pretty good but wans it get to normal heat it start to miss fire and the RPM start to jump UP and Down but ingen sound the same for example if I going 45MPH the RPM should stay about 2000RPM Not jomping too

4000RPM or 3000RPM

When I going 45MPH and the car is at normal heat the car what to stol whayl runing when you step on the acelader when shifting or what to go faster that when it start miss fireing or what ever it is

Reply to
grabiel soto
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Sounds liek air in the cooling system. When thermostat opens the coolant drops below the sensor and the computer thinks the engine isn't warmed up. Mixture and timing changes and engine runs badly. Fill rad and reservoir to the MAX mark and do it again next day too. 'Curly'

Reply to
motsco_

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