Questions & Answers for: Pontiac Bonneville vacuum leak

vacuum line on them. If you replaced the lower intake gaskets, it is very likely they crushed around the intake bolts. This will cause oil to leak into the intake and pool in the recesses of the lower

...vacuum leak or a faulty throttle posiiton sensor. Is your check engine light on? If so, I would have the engine codes read to pinpoint exact problem locaiton area. you problem can be related to ...

vacuum leak. Best thing to do is to check the vacuum lines around the intake. And around the charcoal canister. Code P0171 means system too lean bank number 1. This means your oxygen sensor on bank 1,

...emission contol system a evap small leak can be anything from a loose gas cap to a vacuum leak to a loose hose or cracked hose to a defective purge, vent, or pressure valve. it could be your o2 ...

...vacuum leak. Repair that leak and continue on until you've covered the entire intake / vacuum system - don't forget to check the lines going to the various canisters and components under the hood. ...

...in the vacuum connector on the pressure regulator. There could be a leak in the diaphram allowing fuel to enter the engine through the vacuum hose resulting in poor fuel mileage and running

vacuum leak Scan said I have vacuum leak. How do I find vacuum leak. Runs bad at start up. Look for cracked and gummy vacuum hoses on the manifold. You may find one disconnected. Sometimes you can get

Scan said map or MAF/VAF or vacuum hose off.Runs bad cold but ok after warm up. Can't find any vacuum leak How do you check sensors? Change the mass air flow sensor,

...vacuum leak or loose vacuum hose connection. On electrically operated systems: The dial temp switch, electric door position motor, blend door position sensor, photo diode sunload sensor or the ATC ...

...Vacuum leak or manifold absolute pressure sensor is faulty. As rpm's increase, manifold requires more vacuum to pull fuel into the intake. If there's a leak or a bad sensor, fuel can't get to the ...