Question about 2004 Jeep Grand Cherokee

2 Answers

Enging light on

Engine light keeps poping on, get an emissions code, they told me to change gas cap, did, light stayed out 2 day, came back on, what else could it be, thanks

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2 Answers

Crank shaft sensor or cam sensor

Posted on Sep 02, 2008

Crank shaft sensor or cam sensor

Posted on Sep 02, 2008

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CAR WONT GO IN READY STATUS


broken evap line/port on fuel pump. Or leaking fuel pump o-ring
check the EVAP canister it is right next to fuel filter could be pcm needs update to fix false codes. Here is a old hillbilly trick that may help put saliva on the seal of gas cap when you fill up every time that may work for you.

Mar 26, 2014 | 2002 Oldsmobile Alero

1 Answer

Check Engine light issues


change the evap sensor the location of the sensor should be on a sticker schematic under your hood

Aug 27, 2012 | Cars & Trucks

1 Answer

The engine light came on. My mechanic put the little scanner on it and came up with a code (he didn't tell me what it was) that he said had to do with the emissions valve. $200 to fix. My question...


As long as there is a problem with the valve the light will stay on. I would take it to another mechanic for two reasons. 1 second opinion, 2 the mechanic should have told you the code and explained what the problem was, not just give you a price. And I think $200.00 is alittle steep

May 24, 2011 | 1997 Dodge Grand Caravan

1 Answer

Car runs very ruff. computer says small emissions leak.I have replaced gas cap, this helped for 1 day. now check engine lite is on again.


Did you erase the code after you repaired the problem ??..Emission leaks are usually not affective
to the engine performance...But a gas cap is for some reason...You actually need an emission
leak tester hooked to it ...Or a DRB III eng. analysis tool....I am chrysler tech.....
But normally emission troubles wont make it run rough unless it is very bad !
It may be your O2 sensor.Doublecheck gas cap security.....make sure old code is cleared before you make any more adjustments....Check engine for any vacum leaks...This could be the problem....Because it shouldnt run good for a day after changing only the gas cap...
Make sure all electrical connections ( PLUGS/WIRES/INJ.CONNECTIONS...etc..) are good...
You may have to take to dealer to clear codes and recheck.....Maybe update PCM
Hope this helps.......................................Level II CHRYSLER ..................Metalpoet

Apr 17, 2011 | 2002 Dodge Stratus

1 Answer

Engine light on Codes show 1. Po 441 evaporation emission system incorrect purge flow 2. Po442 evap emission system leak (small) 2. 446 evap emission system incorrect purse flow 2004 Toyota Tacoma pickup...


Hello! Those three codes commonly indicate the followi possibilities:

The gas cap was not sufficiently tightenend ater fueling, a bad gas-cap rubber o-ring, the vehicle had the key in the 'on', or engine running, or the tank was filed all of the way up the neck.

Any one of the abope causes will set all three codes.

Dec 20, 2009 | 2004 Toyota Tacoma

2 Answers

Check engine light came on. Code P1456.


Did you change the gas cap with a Honda gas cap? Tighten it at least three clicks?
Also, Honda recommends that you never top off the tank when getting gas (only go to the click-off of the pump; otherwise you can get back flow into the system that will cause the code).
Tightening or replacing the cap will not immediately cause the light to go off; it can take up to three days of driving for the light to reset.
To check if your readiness codes (emission system) are set, turn the ignition to ON (II), without starting the engine. The Malfunction Indicator Lamp will come on for 20 seconds. If it then goes off, the readiness codes are set. If it blinks 5 times, the readiness codes are not set.
You can, of course, try resetting your engine light to see if it will come back on (which it probably will). I believe the procedure is:
Turn off the engine.
Press and hold the Select/Reset knob (odometer) in the instrument panel, then turn the ignition switch to ON (II).
Hold the knob for approximately ten seconds until the indicator resets.

Hope this helps you.

Nov 17, 2009 | 2004 Honda Pilot

3 Answers

Check Engine Light won't go off


If you have an Advance Auto Parts store where ever you are, they will read the code and tell you exactly what to code is and what it means. Any mechanic who "guesses" isn't a mechanic at all - he's a thief. Emissions leak can be any number of things, but not the gas cap!

Aug 21, 2009 | 2003 Dodge Caravan

2 Answers

Check engine light on. Code P0440.


wow thermostat >>>> shucks i believe its evep emissions code like faulty gas cap ....you can reset any computer the chck eng light will come on in 50 to 100 miles if not fixed....

May 07, 2009 | 2001 Buick Regal

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