1990 Ford Thunderbird Problem With Idle Air Bypass Valve May Cause Engine Performance Problems

If you experience difficulty starting the engine when cold, stalling at idle, or hesitations during acceleration, it may be the idle air bypass valve . This valve helps the vehicle idle steady when the accelerator pedal is not pressed.

Affected Model Years

This issue affects Ford Thunderbird model years 1990, 1995, 1996, 1997, .

24 people reported this problem

  • 1990 0 Miles
    I have 1996 ford Thunderbird, it seems to cut off when its hot outside buts it starts right back up and does not do in the moring

  • 1990 137 Miles
    I just purchased the vehicle and noticed the idla air bypass would make a weird suction noise when first accelerating only time . in combination, as i accelerate i get a hesitation from time to time... When i come to a stop it "kicks down" twice and seems like its about to bogg out. Issue still has not been fix due to non funding for parts, as im a technician

  • 1990 126,000 Miles
    starts the stall and will not crank at all