I have "winding" sound from underneath the vehicle when I accelerate.. the faster I go, the more prevalent the noise becomes. I had a diagnostic code of 1128 from a snap-on "o meter"... Any ideas? Code 1128 is speed/throttle issues. Could this be major expense?
You has a small vacuum leak on the vacuum line.
Start from the source and work outward.
If you can get a friend to help press on the gas and vary the RPM on the motor that will speed up on locating the leak.
Intake manifold (both side).
Hose between Intake manifold and brake booster.
Follow the brake booster branch out to other vacuum devices.
Heater control valve
Just listen for vacuum noise.
Locate and replace the vacuum tube.
=====
Also check the 4 O2 sensors for physical damage
=====
Reset the OBDII code and take a test drive.
135 views
Usually answered in minutes!
×