Q: Whining whistling in TBI area

asked by on

My engine starts to whine and whistle from the TBI area after I start my car in the morning and it warms up. I fixed 2 vacuum leaks that I had and tested all of the front engine pulleys, but it’s still wining and whistling. Do you know how I can stop this and what’s causing it?

Hello. I believe that you are experiencing a problem with the idle air control valve. It probably has built up some carbon. When the engine warms up it requires less air at idle so this valve closes a little more than when it is cold. When it closes enough, the carbon build up could cause a whistle sound to be made. It is possible that removing the valve and cleaning the carbon from the valve and out of the manifold/throttle body may cure the whistle. If cleaning does not work, it may be neccesary to replace the valve.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Whining whistling in TBI area

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Clutch whining and the car stalls when the clutch is in - 2013 Subaru BRZ

Hello. There are 2 possibilities for this whining: the clutch throwout bearing (as you suggest) or the pilot bearing. If either of them are failing, they can both whine or cause a rotational noise, and they put additional drag on...

Q: Engine knocking while running uphill, and while idling

It sounds like you may have spun a bearing in the engine on the crankshaft or piston rod bearing. Depending on the cause you may have: lost oil pressure going up the hill from the oil pump sucking up...

Q: Parking brake loose - 1993 Chevrolet C2500 Suburban

Hello. Over time, the parking brake cable can become loose. I usually start by adjusting the rear brakes because the rear drum brakes being loose will affect the operation of the parking brake. If the rear brakes are adjusted, then...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...