CHECK ENGINE light - code P0440

[JAMAS]

I dont disagree with the idea of a service station. I just disagree with strangers touching my cars.

[Vendetta]

I dont disagree with the idea of a service station. I just disagree with strangers touching my cars.

Things ain't what they used to be.

Really unfortunate.
-V

[Maddawg]

Things ain't what they used to be.

Really unfortunate.
-V

Hahahah, they sure aren't. When I was 18 and bought my first car gas was .25 cents a gallon. And for that you got your tire pressure checked, windows cleaned, oil and water checked besides pumping the gas without asking. Plus there were S&H Green stamps redeemable for goods and at times promotional glasses and dishes for free. God, you kids make me laugh. Don't touch my car, lol.

Well I actually came in here to see what I could find about the Check Engine light. I haven't bothered to have the code read. But the mention of gas caps rings a bell. I managed to drive over my gas cap when filling a couple of weeks ago. I found another one in my stash of things 'all-automotive' that I dont throw away. Thats probably it. It doesnt ratchet down like the original one, so just maybe.......................

Update: Removed gas cap, sealing ring cracked, purchased new gas cap, reset computer, fingers crossed.

Update: New gas cap seems to have solved the problem, no reocurrance of the Check Engine light.

[JAMAS]

Agreed.

[Nerfzooka]

Well it could be something simple. My check engine light came on yesterday, this morning it showed the P440 code. We just had to clean some corrosion off the gas fill tube and undo the battery for a minute to reset it. Drove it around all afternoon and the CL light stays off.

[johnnyapollo]

I've been having this code pop-up for the past 6 weeks or so - thought it was the gas cap and first tried cleaning the cap/fill tube, tightening some extra clicks, then clearing the code - which would work for a week or two, then the CEL would come back on. Next I removed and cleaned some of the emission parts (needed to preform that maintenance anyway) and reset. Finally broke down and bought an aftermarket Lucas cap to try it out and reset - lasted for a day then came back on. I'm not sure what to try next.

I'm thinking it's the evap cannister but wanted to check first to see if anyone else went through the checklist and get some opinions.

-- John

[VxSport]

Well, we have had the 440 code come on a few times over the years (4 +). First few times, I replaced the gas cap (oem) with an aftermarket. I have cleaned everything under the hood I could relate it to.
In the end.... I found nothing to correct it. It still comes on every few months or so. scan and verify the code, reset it, see ya again in a few months.

[Cobrajet]

I used to get the infamous P0440 code when I ran the K&N oiled filter. It only popped up at one specific point in my commute to work, accelerating uphill an around a corner. I could clear it and it would return a week later.

I had my MAF cleaned (under warranty) and I removed the K&N and never got the code again.

[CowboyErik]

I love this code and 441 that evaporator code; swapped my evaporator and still get the code; swapping O2 sensors next; got new exhaust system in place and the new tail pipe has about bet a mm of black carbon in it; filthy engine considering it's fuel injected, I imagine my O2 sensors are suffocating! I forget what O2 code my VX has thown since I fixed the exhaust but it won't go away, winter has made it a pain to do O2 sensor swaps but I got some good new cheapies from rockauto

[johnnyapollo]

I plan to carefully examine all the vacuum hoses next then the two solenoids. Finally will look at the Evap cannister. I know I have an exhaust leak at the flange where the catback connects but it's been there a while. I'll see if addressing that does anything.

-- John

[johnnyapollo]

After driving it for a week the light went off (odd as I reset after putting the new gas cap on it). I'll still be doing some maintenance today or tomorrow to spruce things up a bit. Want to get this addressed before getting my inspection for the new tag...

[GregWVU]

Having similiar issues with 440 code. New fuel sensor, gas cap and exhaust (needed regardless). Ultimately determined ECM is issue. just ordered one from salvage today. Goal is fresh inspection sticker and then the check engine light can keep me company for another 2 years if it wants.

I've owned my Vehicross for a little over 2 years now. Just passed 50K miles. trying to keep mileage down, but damn its fun to drive. Hope all are well.