04 Pontiac Sunfire 80,000 miles - Went to go to work this morning turned the key wont start. Tried two more times car starts barely and sounds terrible. throws P0171 and P0300 codes which are misfire and lean bank 1. What you guys think fuel filter?
to clarify - DTC P0171 Fuel Trim System Lean Bank 1
DTC P0300 Engine Misfire Detected
Fuel Filter would probably be a good place to start, did you check your plugs and wires how long has it been since you replaced your plugs.
plugs changed about 10k ago do i have to drop the tank to get to the filter?....anyonr know which fuse and relay are located on an 04 fire?
for the fuel filter, i don't believe you have to drop the tank could be wrong about that though. As for the fuses and relays i couldn't tell ya sorry, but maybe someone with some information on that will chime in.
The filter is not in the tank. It's before the rear tires. Just crawl under there and you'll see it.
car will run still sounds bad throwing sames codes and exhaust smells bad of gas
Bad coil pack,spark plug wires,Leaking injector or bad injector,fuel filter might cause it or bad gas,vacuum leak.Check for spark first with a spark tester.
no plus wires i got the eco.....how can i check the coil pack or injector?
Matt C. (Scruffdog) wrote:no plus wires i got the eco.....how can i check the coil pack or injector?
Drop the 15 bucks on a filter. There's two wrenches needed on one side, and then a squeeze quick disconnect on the other.
Your car may do 13 sec @ 103 mph, but my car does 146db @ 35 hz.
Lanman31337 - Cavfire wrote:Matt C. (Scruffdog) wrote:no plus wires i got the eco.....how can i check the coil pack or injector?
Drop the 15 bucks on a filter. There's two wrenches needed on one side, and then a squeeze quick disconnect on the other.
Thanks brother couldnt find a how to to do this. passenger side i take it?
It should be dead center under your car.
yeah.. its in the center of the car.. between the gas tank and trunk floor pan..
good luck on that quick connect fitting.. lol...
Picked up some gumout all in one and a fuel filter may as well try the small stuff...anything i need to know about the quick connect fitting problem? gotta wait though 6 inches deep of snow outside
just that they suck and dont wanna come off unless its a brand new car...
Probably Coil pack or ignition module if it barely starts.Just get someone to swap you that big black housing or pick one up at yard they go bad all the time.
well weather was finally good enough to change the fuel filter got it changed added 5 gal of fresh gas and gumout. car still runs starts slow and when you give it gas it kind of bogs out and sounds bad no power at all. anyone got ideas? fuel pump?
motor jerking also got solid motor mounts and notice that the intake is vibrating
Just put brand new plugs in it still throwing P0171 and P0300 which are lean and random cylinder misfire it seems to run a lil better but still bad. i can hear the fuel pump priming. i dont know where to go next
I think i am having the same/similar problem. Whe nit does run, if you go to drive it do you have alot of power loss/issues? like give it gas, it bogs out and doesnt want to go above 2k rpm easily?
problem solved ignition module was the culprit
