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Old 06-03-2008, 19:00   #1 (permalink)
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Join Date: Dec 2007
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hard start/irregular idle 89 t-bird

89 t-bird 3.8 liter engine
problem #1, i am having a problem starting this car, the engine cranks over several times before it will start, then it will idle irregularly for a few moments before it smooths out( it reminds me of starting a car with a carb. instead of fuel inj.). this condition happens when the car has been shut off for 5-10 min. or longer. if i turn it off and restart it, it will start immediatly, like fuel inj. should.
problem #2 if i am stopped in traffic(stop light) for several min. the car will develop a irreguler idle(approx 500-1000 rpm) until it stall. it will restart immediatly, but the idle problem will remain until i drive at higher speeds. the check engine light does not come on.
i have replaced the fuel pump relay, fuel filter, cap, rotor, plugs, wires, IAC, air filter, MAP sensor, cleaned the throttle body, disconnected and pluged the EGR valve, and have used several cans of sea foam fuel inj. cleaner in the fuel tank. all vacumn lines are connected and appear to be in good condition.
thanks for any suggestions.
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