Bought locking gas cap and now check engine light comes on.
With the price of gas I bought a locking gas cap and cut (the plastic strap) the old one out and threw it away. Now after driving for about 5 miles the check engine light comes on-never came on before. I would love to buy a Bronco Gas Cap but cannot find one searching the web.
Re: bought locking gas cap and now check engine light...
I've alwayz been told by service repairmen at local dealerships, that the error code stems from an improper seal of the gas tank. The engine's computers sense it is not sealed completely, therefore giving you engine check codes. You might try visiting a local dealer to see if the manufacturer offers a lock cap specific to your car
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
The bad gas cap is related to the evaporative emissions what happens is the gas that is not used in the engine return to the tank via the 2nd hose. The tank is pressurized very lightly by this and a sensor detects whether or not the air escapes. So if the cap is loose or there is a leak in a hose the code will set. Since you also have a leak I would start there first. The straps most likely are not cutting the tank the epa would have a fit. Most likely the the gas is coming from above the tank and working its way down the straps. Lowering the fuel tank requirs raising the car quite high. If you are able to inspect the area and reach it I think the leak would be in the gas lines above the tank. Or from the filler tubes when you fill with gas. If you can see the gas leak but are unable to reach it take it to a shop. This may fix the light if not a shop with a (smoke machine) will pump smoke into the system and search for air leaks that way. Good luck .
If you allready checked the gas cap and its on right.
Try replacing the gas cap with a new one.
You should here air wen you open the gas cap after driving
This is part of the emision controls and if it dosn't seal it will cause the check engine light to come on .
Assuming you mean the gas cap being replaced, this can also be the result of a vacuum leak. Look around on the engine and see if there are any vacuum hoses related to the fuel system. If your engine has a plastic cover it is under that. Remove the cover. Most are held down by the oil fill tube which generally unscrews, sometimes reverse threaded.
There is a good chance that this is caused by your gas cap not being on tightly enough. This happened on my compass, and I noticed that when you close the gas door the plastic strap that connects the cap to the door can get wedged and loosen the cap. The light will go away eventually if the cap is tight and there are no other leaks.
Does your Wrangler have a cap that is attached with a tether (chain, or plastic cord to prevent loss of cap?) If so, just cut it to remove the cap. Stant makes a locking cap for an 08 Wrangler, available online or in stores.
I suppose the engine code said that cylinder was not firing or faulty? I would immediately get a compression check done on the engine. It is relatively painless. My burnt valves (compression 10psi vs 150psi) could not be diagnosed any other way. Does this help?