Skip the auto shop - Our mechanics make house calls

Q: cylinder 3 misfire evap large leak

asked by on

i have a code for the problem on my 2005 trailblazer po302,po455,po410,po302 what do you recommend

Hi there. Among the error codes you listed, the concerning one is P0045, which indicates a leak in the EVAP system exists. The leak can be caused from a variety of components. The most common is related to the fuel filler cap which could be missing, not correctly installed, not sealing properly or may be damaged to the top of the filler neck. The next most frequent problem is a leak in a hose. Hoses on the breather system tend to crack with age including the large connecting hose on the filler neck to the tank. The Evaporative Emission System has a purge valve to regulate pressure in the system and this will need to be checked by a technician. However, in order to clear the codes, you need to have a professional mechanic complete a check engine light inspection to reset the codes; so either way, it’s best to have a mechanic inspect your vehicle first before any repairs are made.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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: My car hesitates upon acceleration

This may be a sign of a faulty fuel pump or fuel pressure regulator. As you know, when you turn the key to on, the fuel pump is activated and the fuel system is primed with fuel at a specific...

Q: I have a Po171 code on a 2006 trailblazer

The cause behind diagnostic trouble code P0171 is easiest to find by looking at the secondary firing patterns on the Bank one cylinders. That will confirm if the too lean condition, that has caused the code to set, affects all...

Q: Ford focus battery light on but new battery fitted

Hello there. It is quite possible that you have battery cables that are faulty, a damaged alternator or electrical relay that assists in the battery charging process. It is probably a good idea to have a professional mobile mechanic come...

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...