The code says its the fuel cap or related. My mechnic flushed my system, new fuel cap and I pump my own gas so I know the cap is always twisted 4X + to make sure its not a loose fuel cap.
The light is STILL ON and he doen't know anything else to try. For 6 months I also tried using a 91 Octane fuel in case it didn't like my small town regular gas. I keep getting the light cleared but it keeps coming back on.
Its a 2003 4door Chev Blazer with 4X4. Nothing else is wrong with it, freshly tuned up/oil change. No other sympotms at *all*. Ideas?? The light pizzes me off :P Thanks!
2006-10-15 14:15:19 · 19 answers · asked by PinkPrincessNerd 3 in Cars & Transportation ➔ Maintenance & Repairs
Two different mechanics have had a go at it already by the way :P
2006-10-15 14:21:58 · update #1
Yes - more than 1 mechanic has had a go
Yes - the system was reset after the cap replaced
Yes - It is an EVAP leak with no apparant leak
:(
2006-10-15 14:26:49 · update #2
The visual check was done by two mechanics already too. Maybe I should put a sticker over the light :D
2006-10-15 14:35:11 · update #3
And more...
yes the fuel cap has been changed to a new one
the code lit once while driving in town slowly and another time while highway driving as well [but it was a good idea]
it has been reset 9 times so far....
2006-10-15 15:05:26 · update #4
The code is probably for an EVAP system leak. (The EVAP system is an emissions system that keeps fuel vapor from escaping into the atmosphere) Fuel cap is the most likely cause. (Was the code cleared and the engine light reset after replacement?) If the light was reset and came back on after the cap was replaced.. you need to have the EVAP system smoke tested to find the leak. This is done by pumping smoke though the EVAP service port (Green Capped Schrader Valve usually under the hood somewhere) This requires a special machine which your mechanic may or may not have.
2006-10-15 14:24:28 · answer #1 · answered by wetustin 2 · 0⤊ 0⤋
Nothing to do with fluids. Flashing means you are misfiring and that's something that may be serious. A scan of the code at this point will just tell you what cylinder is misfiring and I bet there's more than one. Did you put lower grade gas? That and the heat could cause this. It could also be a bad fuel filter, bad spark plugs or bad injectors. Happens a lot as the weather starts to get hot out. I would go have the car checked out because there are many possible causes and it could get costly replacing parts that may not fix the problem. You might get lucky but it's best to have it taken care of and stop driving if it continues as misfiring can damage the engine easily.
2016-05-22 05:11:01 · answer #2 · answered by Anonymous · 0⤊ 0⤋
If you haven't already. disconnect the red (positive) cable from the battery. It will erase all the stored codes from the computers memory. Leave it off for two minutes and then reconnect it, you may have to set the clock and radio again.
Its like a snow ball rolling down hill, if one sensor issues a code then anther one follows. If your Blazer has more then 80 thousand miles on it it might be you catalytic converter or an O2 sensor. That 4.3 V6 was none to have emission problems after 80 K.Your vehicle emission control systems are covered by any dealer till then 80.000 miles. If your in a state that issues emission checks, you can't have it done if you have any "check engine" light on... Good Luck
2006-10-15 14:34:56 · answer #3 · answered by Johnny 4 · 0⤊ 0⤋
Ok evap codes can be set by leaving the cap loose, but any vapor leak in the system will turn the light on.Very dificult to find with out evap testing equipment . A visual inspection of all related components would be first step,checking all hoses ect. You will more than likely end up taking it to chevy dealer to get to it fixed.
2006-10-15 14:29:09 · answer #4 · answered by deltech 4 · 0⤊ 0⤋
Take it to a shop with a evap machine. They will put smoke in the system and check for leaks. If it is a 440 or 442 code, and the cap is on right, you probably have a bad cap, or bad purge or vent valve.
2006-10-15 15:49:12 · answer #5 · answered by B H 3 · 0⤊ 0⤋
It might not be the fuel cap and could be some kind of emissions problem. Some manufacturers cover emission problems for 5 years 60,000 miles. It could be worth bringing in to a dealership.I have had pretty good luck with Chevy dealerships. They are good at finding the exact problem because they know the cars.
2006-10-15 14:34:49 · answer #6 · answered by walkerhound03 5 · 0⤊ 0⤋
buy a cheap code reader and reset the code whenever it comes back.
then when the code does come back, note the conditions. how long you'd been driving, how fast you were going.
a good mechanic will know from those driving conditions what test the computer was running when it threw the 1443 code
there are certain tests the car does only when it's been driven at highway speeds for a certain amount of time.
2006-10-15 14:57:03 · answer #7 · answered by Jan G 2 · 0⤊ 0⤋
Try this, remove fuel cap for a few secounds then replace fuel cap and be sure to click it atleast twice. Recent engine light on and this was suggested by mechanic. Mine ended up being low battery.
2006-10-15 14:18:54 · answer #8 · answered by preshus 3 · 0⤊ 0⤋
I'm sure your mechanic enjoyed flushing your system, but the fact is those warning lights don't mean squat. My check engine light has been on for 12 years, and my pinto runs like a charm.
2006-10-15 14:26:14 · answer #9 · answered by Anonymous · 0⤊ 0⤋
did you try replaceing fuel cap? park in a dry spot with a full tank of fuel ...place a large peice of cardboard under fuel lines and tank overnight... in the morning check for wet spots on cardboard, this will deterimine any leaks...if u have inline fuuel filter try changeing it...make sure vent line for fuel tank is not plugged or blocked ,,,have fuel pressure regulator checked ....good luck
2006-10-15 14:37:35 · answer #10 · answered by danny n 2 · 0⤊ 0⤋