i have a 99 cavalier 2.2l and i am having some issues with this code keeps poping up, i replaced both o2 sensors, and still pops up the code, also, car seems to be misfirings and stalls out at times, also smells like it is running rich. mods on car are aem cold air intake with headers. any help is gladly apperciated.
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P0171 is a lean code. You have a fueling issue... if the car is stalling out, then it's likely the fuel pump on it's way out. I've had this numerous times on several cars... and every time, it was the fuel pump that needed changing. Changing the fuel filter helped for a little bit (once it was the original filter at 200,000 kilometers... damn thing was clogged solid...) but eventually it's always drop the tank and swap the pump.
ok along with the code it bucks and eventually boggs down, i dropped the tank and replaced the fuel pump, drove fine for a day or two no bogging down or acting up, but still does it some times, if i get on it. what could it be FPR? also changed the map sensor. not sure wht my nect step is.
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my next step would be new, better, engine lol. my 2200 is doing that sometimes as well sometimes. mines tends to bog at stops.
same problem...mine car also seems like it wants to stall when i turn the AC on and off, and when i come to a stop, the RMPs go super low, and she wants to stall, but recovers....i as well have a 2200. any solutions on this? im very intereted as well!!!!!!
ill try and figure it out tomorrow at the shop if im not to busy. mines been this way ever since my cat converter decided to spit out of my exhaust lol. mine tends to drop to around 750 rpms then down to 500 or below at an almost complete stop. most of the time it recovers but ive stalled twice.
Edited 1 time(s). Last edited Wednesday, August 05, 2009 11:21 PM
Auto's are suppose to idle at 650 anyways, so 750 is not low.
FU Tuning
it seems like it misfires, my buddy watched it on his scan tool, that does live data, ignition timing is jumping when it starts to buck or misfire, any where from 0-36 or higher. not sure what to make of it.
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well dunno if this happens with the OP's car as well.
but when my car does what i said, and what furious 2.2 said
as well as what the OP had to say. mine also, when i rev it,
it doesnt drop back down the RPMs normal. they go down really
slow and such....so i hope this helps pin point/help find the problem
for OP, furious 2.2, and i.
i will look into the vaccum, i kinda heard that before.
but wasnt sure if that was it, didnt sound right.
but now it does.
furious or sk8rguy, if u guys find out the answer.
please post up. because my car has been doing this
for quite some time now, and i wanna get her fixed.
because it also seams, because of this, my car is geting like 16 MPG!
John Lenko wrote:P0171 is a lean code. You have a fueling issue... if the car is stalling out, then it's likely the fuel pump on it's way out. I've had this numerous times on several cars... and every time, it was the fuel pump that needed changing. Changing the fuel filter helped for a little bit (once it was the original filter at 200,000 kilometers... damn thing was clogged solid...) but eventually it's always drop the tank and swap the pump.
That's the problem. More than one header on the 2.2. Makes it run lean.
Jon Mick wrote:
i find it amusing that SHOoff has nothing better to do but follow me around & be an unhelpful dick in even cross-forum.
^^^ lawls
i didnt have a chance to check it today but ill get around to it. 16 mpg sucks ass this problem is not your only problem then cause i still get 30+ lol.
checked it out and my choking theory was correct its not getting enough fuel. put some fuel system cleaner in it and gonna see how that plays out.
Furious 2.2 wrote:checked it out and my choking theory was correct its not getting enough fuel. put some fuel system cleaner in it and gonna see how that plays out.
good luck with the fuel syetem cleaner...ive been doing that forever, thinking it would help all of ^^^this.
but no. its been like this for a year! and adding fuel cleaner every month did really help. maybe it willl for u tho!!
well if not im doin a new fuel rail and injectors (no im not paying for them) and then maybe take the head off and check the valves. one of the perks to having a parts car and an extra car to drive around lol.
well i also took a look at it the other day i used a wynns fuel system cleaner, injector cleaner, combustion chamber cleaner, and throttle body cleaner. basically its almost like using sea foam on the engine. i did this two days ago, hasnt been acting up, ive been driving it pretty hard doesnt do any bucking or anything. seems to be fine, i'll see how its running at the end of the week.
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well let it go for two days or so. and its still doing the same thing dont know what do with it anymore.
Well... start off by checking if that fuel pump of yours is running or not. Get a fuel pressure gauge, and stick it on the rail. If the pressure drops, you've got a dying fuel pump.
You can throw crap at it all day long... but if you don't bother to find out what the actual problem is... you're just wasting your money! (Garages love people like you...)
yes i love ppl that like to spend money seeing as how i work at a garage lol. but ya used the stp injector cleaner seems to be working just fine now. plan on doing all the good stuff i should have done like 3 months ago (trans flush, plugs/wires, etc, etc) and get it back on track lol. yes ive been lazy and cheap with it. also should have my talon running soon so i can rip into the cav.
i get the stuff for a discounted price due to my buddy working at a garage. just seeing if anyone else has ran into this problem.
