I have an '87 supra na, 5spd, with only a k&n cold air intake mod. The car has a high idle (about 1800rpm) and it doesn't matter how long the car runs, it will idle at 1800. I adjusted the idle down to 1500 and it sounded good but when I got to 1000rpm it sounded like it was misfiring. What could cause this if I have no problems at rpms over 1500?
I haven't had the chance to do general maintenance to the car yet. I just picked it up two weeks ago. I want to change the oil, plugs, wires, rotor and cap...etc. Change all the fluids and other general stuff. But in the mean time, what is causing this misfire?
Thanks in advanced,
Larry
I haven't had the chance to do general maintenance to the car yet. I just picked it up two weeks ago. I want to change the oil, plugs, wires, rotor and cap...etc. Change all the fluids and other general stuff. But in the mean time, what is causing this misfire?
Thanks in advanced,
Larry