VACUUM LEAKS

2001 Lincoln LS

Tiny

rozzz9

September, 26, 2010 AT 1:31 PM

Engine Mechanical problem
2001 Lincoln LS 6 cyl Four Wheel Drive Automatic 71000 miles

codes p0171 and p0174 and p0303 changed mass airflow sensor, oil and filter spark plugs, fuel filter, icd, o2 sensors on both sides. I hear a leaking like hissing noise when I start the car and it continues, car eventually idles up and down then dies. What is this

1 Answer

Tiny

bluelightnin6

October, 20, 2010 AT 9:22 PM

A hissing noise normally indicates a leaky vacuum hose. Where is the noise coming from? Engine compartment etc?

Please login or register to post a reply.

Vacuum Leak Test and Repair - All Cars
Clean Idle Air Control Ford Super Duty 5.4L