It has something to do with evaporative emission large leak detected the scanner says. Technician should drive the vehicle to duplicate the concern. Answer: The code p0171 is a common code to turn on a check engine light after an oil change on this vehicle. This is a subreddit for asking Mechanical questions pertaining to vehicles, engines, etc. Technician will gain access to the roller rockers to inspect them.
Actually my theory is this. Sometimes a gas cap itself can go bad. For example: The computer wants to avoid dumping gas vapors into a cold engine. I removed the purge valve, no obvious problems. Whether the mechanical part of the valve opened and closed properly or sealed properly is an entirely different question. This is a zero tolerance policy.
Technician will find that the OnStar led is red and Diagnostic Trouble Code U1500 is set. P0442, P0446, P0455 - Wells CounterPoint Ep. Or as Gm would like to call it, The Temperature control valve. Large or small leak, I replaced ever thing in jeep and still won't clear code. If it's got wheels, treads, floats, flies, or has an engine you're good to go. Some techs believe that small leaks are easier to diagnose using a vacuuming tool rather than smoke. I found the info on this website but not sure where.
Optikleen® is a registered trademark of General Motors Corporation. The videos take real time to create and pull us away from real work that pays our bills. So you tighten the cap, delete the code and send the customer on his way. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. A large leak will show up very easily with a smoke machine flow meter. Moisture above the tank can also cause rust at the top, which can be a leak point as well. If you have two or three different lights, try them all to see what works best.
It keeps giving me a code so I can't get a sticker. If no obvious problem is found, the next step is to take your car to a mechanic or your dealer. Those who demonstrate they cannot follow the rules will be warned and posts removed. The first thing to check with this code is the gas cap. Lastly, look at likely spots and connections.
How can you save time and find the leak without spending all day? When the problem is 'solved' please click the button under your post marked 'Is this solved? Gas vapors are absorbed by a canister of activated charcoal. Everyone in between can use their smoke machine and dye for a very hairy situation. The most common culprit is the gas cap that is left open or not closed properly, although there could be other problems, read more below. Dexron® is a registered trademark of General Motors Corporation. What exactly did you replace? To be quick, accurate and avoid comebacks, you should run the smoke for the full 5-minute cycle if the source of the smoke is hidden and requires disassembly. If there is no click, the vent control valve must be replaced. Had the codes scanned at Autozone.
If you do, it will break. I have recently changed the battery however this has been over 300-500 miles ago. So I put me original gas cap back on which is good because it has the leash to keep from loosing it. Your first move: check the gas gap. Remember the golden rule: If you have nothing nice to say, don't say anything at all. I have an evap leak somewhere.
Apply vacuum to the disconnected tank hose at the evaporative canister. Sharing personal information, or specifics on is not allowed. Lubriplate® is a registered trademark of Fiske Brothers Refining Co. Then I had the almost overheat thing and knew it was a bad head gasket. We allow links, pictures, video, or audio file to help diagnose your problem.
Check Engine Light came on in early July with P0455 large evap leak. Air pockets can prevent flow of coolant through the heater core. Any suggestions on what to do next or if there is a cheap part that commonly fails? As always, check the gas cap first. If all of the plastic decorative fire-hazard bits were removed to evade the fire hazard and no seal repair was done or the seal goop repair has failed again this issue can return. Use the 'All Posts' button to return to the default view. Technician may find Diagnostic Trouble Code P0442.