1986 Ford Mustang Malfunction - Fuel System


Question:

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Technican: Did'nt get any info as to your problem.Resubmit and we'll try and work it out. Paul
Owner: i have a 1986 mustang 2.3 1bbl carb. when at idle it runs rough, at 2000rpm it is smooth i will like to know what the problem is. it has new sparkplugs, wires, rotor and cap.help me out!!!!
Technican: You might try to check for vacume leaks and also your O2 and MAP sensors.It sounds as if the engine is maybe starving for a little air or the backpressure in the exhaust my be your problem.You say its carbureted so check around the bases of the carb and manifold for leaks. Paul
Owner: 1986 ford mustang 2.3 1bbl carb it hesitates when idling it wants to cut off.i I disconnected the idle control valve and it ran better connected it and the same thing! I got a new one and the same. HELP!!!!!!!!!!!
Technican: Again, exhaust may be an issue here.When idling, if the proper amount of expulusion is not achieved, hesitation will occur.The O2 and MAP read this.The ECM is probably recieving a code that is either telling it to cut back or overfeed fuel due to combustion readings from these sensors. Paul

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