Alero :: 2003 - Codes PO141 And PO171
Nov 11, 2013
03 Alero 2.2 with no maf sensor.
I have both codes 141, 171. I am trying to figure out if I should just change rear oxygen sensor or something else.
Nov 11, 2013
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Ford F-150 - 1997-2003 :: Truck Running Rough And Hesitating - Codes PO141 And PO171
2001 F150 4.6. Just replaced all 4 oxygen sensors and spark plugs. Replaced rubber grommet on brake booster as it was leaking vacuum.
Truck is still running rough hesitating.
Pulled codes came up as PO141 oxygen sensor heater circuit. PO171 passenger side cylinders running lean. Fuel trim outside limits.
Ford F-150 - 1997-2003 :: EGR Open All The Time / PO171 And PO174 Codes
Everything started with the typical lean bank 1 and bank 2 codes. I started at the basics change fuel filter PCV Hose & Valve clean the MAF changed air temp sensor(it was cheap). Still had same po171&po174 codes. Bought a obdll reader. After 3 weeks of nothing being accomplished I bit the bullet and took it to Ford for a diagnostic and they said it was definitely the intake gaskets.
I changed the gaskets and now this has gotten worse! I started the truck after reassembly and it ran like crap!
Checked everything and everywhere and could find nothing wrong. I then took off the vacuum line to the EGR and everything smoothed out. I didn't mess around and replaced the EGR the DPFE and the vacuum solenoid.
It still runs like crap especially at idle. I did the tests with my digital meter and found the vacuum solenoid is calling the EGR to be open all the time. I suspect that this would be the fault of the PCM? What should be my next course of action?
Ford F-150 - 1997-2003 :: 2002 V8 Running Rough - Codes PO353 And PO171
2002 F150 5.4 v8,,, I had troubles just over a month ago with a po305 code. i got the truck fixed with 2 new coils n some gaskets. I am having these po353 & po171 codes pop up now. The truck is running rough and I am curious to if its just another coil problem or if their is something I am overlooking or just don't know about?
View 1 RepliesFord F-150 - 1997-2003 :: 2002 4.6L Windsor Won't Stay Running - Codes PO171 And PO174
This truck has been running fine then as my son was getting off the interstate it started acting like it was running out of gas then died. I went to tow him in and it cranked right up and never had another problem for a week. Yesterday he drove 80 miles away when the same thing happened shortly after he got off the interstate. He replaced the fuel filter which it probably needed but still won't start and stay running. It cranks right up the immediately dies.
First time this happened it was throwing codes PO171 and PO174. Now it is not showing any DTC's at all and none pending. We see no frayed or bad wires and all vacuum hoses seem fine. He cleaned the MAF with no change in behavior.... If it were an outboard motor or some kind of boat I'd say the problem is in the ignition switch except it does run a very short time before dying. If I immediately try to restart it won't stay running. If I let it sit for a while then it will run for about a half minute.
Ford F-150 - 1997-2003 :: 2001 5.4L Throwing Codes PO135 / PO155 / PO174 And PO171
I have a 01 f150 7700 with a 5.4L and its throwing codes po135, po155, po174, and po171. Here is the history, last year had same code and found it was a bad ELLBOW on pcv hose, replaced and that fixed it, I also had a crack on egr valve and I replaced that too. This Jan truck was running bad in the morning and I traced it to a bad idle air controller, replaced it. I got a code and guy said I had a bad pcv valve so I replaced it.
About 3 weeks ago check engine light came back on with the 4 codes listed above, I replaced both front o2 sensors, 250,000 mile so I thought that was it but came back same code, I took it to a local mechanic and he said that the intake gaskets need replaced, but he call me later and said I had no leaks on the intake and that he did find another vac leak. He didn't charge me anything and sent me on my way.
I drove the truck about 50 miles and same codes back, so to recap I have cleaned mad sensor, replaced both front o2 sensors, a new egr valve, a new idle air control, pcv valve, pcv hose and ELLBOW, don't know what to look at next. Any clues?
Ford F-150 - 1997-2003 :: Truck Cranks For 3 - 4 Seconds Before It Finally Fires / PO171 And PO174 Codes
I have the notorious PO171 and PO174 codes on my 2003 5.4L that come back whenever I erase them. I cannot figure out the problem. Whenever I start the truck it cranks for 3-4 seconds before it finally fires, then rpm's are very low, then they finally pick up. I have noticed a loss in power as well. I have completed a full tune-up (spark plugs, coils, boots, filters, etc.)
I have checked the vacuum and PCV lines numerous times, I have yet to find a leak. MAF appears clean. I am running a K&N CAI setup. O2 sensors a good, replaced the gas cap. The only other problem I can see is a bad PCV valve? I hope it isn't a manifold gasket. The truck has been very well maintained and still looks brand-new throughout at 250,000 miles.
Santa FE SM (2001-06) :: Codes PO171 And PO401 - Car Starts To Bounce A Little Until Let Off The Gas
I am getting two codes, p0171 and p0401. Both point to something with the fuel are mixture I believe. My problem is that I can not figure out what the problem is. As far as I can tell there is not a vacuum leak. My MAF sensor looks clean and close to brand new. The codes come on and the car seems to want to jump. It does not stall, just starts to bounce a little until I let off the gas. And it does not do it until the car is warmed up. 2001 Santa Fe .....
View 4 RepliesCelica :: Extremely Sluggish With Codes PO300 / PO302 And PO171 Constantly Popping
I have a 1.8l 1zzfe that has been rebuild because of the oil consumption problem. Right before it was rebuilt, it became extremely sluggish and was popping po300, po302, and po171 constantly. When the motor was torn down #2 cylinder had a burnt valve, rings were stuck, and carbon everywhere. All bearings were in spec, but they were still replaced. Pistons, rings, timing set, and plugs were replaced. I am still getting a sluggish acceleration, and popping codes po171, and po300. I have tested the injector resistance, seemed ok. Tested spark, seems ok. Tested the wiring harnesses, cleaned the maf, intake, and checked all of the vacuum lines. Not sure what to try next?
View 2 RepliesFord F-150 (2004-2008) :: Vacuum Leak Causing Erratic Idle - Codes PO171 / 174?
I tugged on the little hose on the back pass. side of the engine,(5.4),...
and I could hear the vacuum leak that is apparently causing the erratic idle, and PO171 & PO174 to come up.
I know this hose is hooked to the Charge motion Control Valve on the back of the manifold,..I can't imagine what it does, as it terminates with some kind of plug or check valve??? Haynes say's to remove the entire manifold to get to the CMCV.
I can see it with a mirror,. I am thinking maybe long needle nose from Harbor freight,...bend the tip short,..maybe be able to change it out?????
Alero :: Codes Can't Be Read In 2002 Vehicle
I have a 2002 Alero 2.2 4 cyl and the gauges, head lamps in auto position, windows, fan, and radio will not come on. When car is off and key turned to acc. radio will work. It still drives ok, doesnt seem to be draining the batt but the check engine light came on. I took it to autozone and they COULD NOT read the codes and didn't know why.
The speedometer, temp and fuel gauges haven't worked for months now and the rest of the accessories not turning on is a recent issue.
The only thing that comes on regularly is the backlight for the dashboard and now the check engine light. I had the ignition switch replaced right before the speedometer, fuel and temp gauges stopped working. I noticed tapping the key sometimes gets the radio, windows, and fan working but not the dashboard gauges. Don't want to replace the ignition switch again since it doesn't seem to do anything for the dashboard gauges.
Alero :: 2003 - Loud Humming Sound At 40 MPH+?
Our car is a 2003 2.2L 4 Door. 132,000 miles.
About 3 days ago it started doing this thing where once we hit somewhere between 30-40 mph, it started making a low pitch humming sound. At 40 MPH+ it is very loud. To me it sounds like an airplane, I don't know how else to explain it. There is no shaking, though sometimes I can almost feel the vibration from the humming at my feet. My husband says that the higher the RPM's, the louder and slightly higher pitched the sound is. If we go below 30 MPH it stops.
We were a little late on our oil change and I assumed that was it, but got it changed today and it's still doing it. Other than that, about 2 and a half weeks ago, our rear driver side tire went flat. My husband was in the middle of no where on the way home from work so he used Slime and that fixed it (never went to get it repaired because we didn't have the time and it didn't go flat again).
Could it be that the tires are not balanced correctly because of that, and it is causing the humming?
Also, this may be completely unrelated but: The only other problem we have had/still have with the car is that about 2 years ago we drove from Texas to Nevada, and at one of our stops the coolant dumped out (did not overheat/no other issues). Took it to 2 different shops and they couldn't find anything wrong with it. Drove fine until 6 months ago driving from Nevada to New Mexico, it did it again, but this time it also overheated. The mechanic said it was the water pump. Replacing the water pump (which is expensive!) did not fix it, so without consulting us they also changed the thermostat. Charged us for both, told us it was fixed, and about 2 month ago it did it again, but did not overheat/no other issues again. Hasn't done it since...seems it only happens on long drives. Anyway, I don't think it's related, but I thought I'd mention it.
Alero :: 2003 - Recirculation Button For AC Does Not Work
Have a 2003 alero. Why the recirculation button for ac does not work....I press it and the blower stays at same speed when before it would blow the air stronger....
View 3 RepliesOldsmobile - Alero :: 2003 - Water Pump Is Going Out
There is a car i am interested in buying but the person selling it says the water pump is going out. The car is an Oldsmobile 2003 Alero with 141000 miles on it. How much would it cost to fix this water pump and how can i check to see how its working?
View 6 RepliesAlero :: 2003 - Driver Side Wheel Getting Hot
2003 Olds Alero.... Just replaced the pads and calipers (changed and bled correctly). The driver's side rotor was ground on the inner surface of the rotor (about a half inch of grind from center). Thought I had a bad caliper so I replaced both sides. Now the rim is getting hot. Not sure if friction from the warn caliper is causing the problem or not. Did some smoking after some heavy braking last night. I'm at a pause whether or not to change the rotor, if that is the problem. I do hear a little noise from the rotor, probably due to the ground rotor.
View 8 RepliesAlero :: 2003 - Blower Shut Off And Cruise Light Will Come On
03 alero blower will shut off and the cruise light will come on. If I hit the cruise on/off and also the window switched then the blower will turn back on. If my windows wont roll down then I turn on the blower and cruise and the windows work again... similar with the cruise and turn signals... what gives here?
View 1 RepliesAlero :: 2003 / Main Cigarette Lighter Does Not Work
i have a 2003 oldmobile alero and the main cigarette lighter does not work. yesterday i got fuses and it kept blowing them so i figured it was a short and i need a new lighter. the second power outlet on the passenger side works fine and doesnt blow the fuse. how much work do you figure it would be to get a new cigarette outlet and replace it? i mean could i do it myself?
View 3 RepliesAlero :: 2003 When Key Is In ACC Position The Light (Service Engine Soon) Comes On
I've got a 2003 Oldsmobile Alero that will not start.
The only thing that happens is when the key is in the ACC position the light "service engine soon" comes on. When I try to start it the light goes off and nothing happens at all. Now I've realized the lights don't work, power windows, radio or anything. This morning my keyless entry worked before getting in my car and trying to start it but now it doesn't. It seems like I've blown a fuse but I can't find any that look blown. I don't have a light meter to be 100% sure however.
Alero :: 2003 Fan Doesn't Work - Cruise Control Dies
For a while now when i would turn my fan on, from off, the lights showing the air inflow, etc. fade out and i get no air intake what so ever. The light is on when the dial is switched into the off position, but when i go from level 1 and up the power dies out. Intermittently it will turn on, but often for brief moments of time. Also when it IS on i get a permanent "cruise" light that stays on however my cruise control doesnt work when this is going on.
The light is just on. When it does decide to work and i turn my cruise control on it works up until my fan dies out again (they are on and off at the same times) and thus, the cruise control dies again. I took apart my heater circuit board in hopes that it would solve the problem, and for about a week it did. However it ceased to work yet again. I went and pulled one from a scrapped car to see if replacing the unit would solve the problem, but this one is not having any better luck.
Oldsmobile - Alero :: 2003 - Loud Clunk In Front End When Turning
2.2l '03 Olds Alero, 89k miles
My car has an unsettling noise. It is a loud clunk in the front end that can be felt. It only happens when turning right (just past where the wheels are aligned) when going forward. I believe it also happens when backing out of a spot to the left. It is only one solid clunk. This clunk isn't always loud, and can be subtle. If I do a figure eight, the clunk will be the loudest with the first wheel turn to the right, then will either get quieter or disappear all together. Let the car sit for a while, and the first turn will be the loudest.
Things that have been tried:Full Strut/shock assembly replacement on both sides of the front suspension.Sway bar link replacement on both sides.Both front control arms, complete with ball joints and bushings have been replaced.
Possibilities I haven't changed or on the list to examine/replace:
-Sway bar bushings
-Wheel bearings
-CV Joints
-Engine mounts
-Tie rod ends
What should I be looking at first? Is there something I am missing? It's been to the mechanics a few times. For a week after the control arms and sway bar links were replaced it was ok, or dull enough not to hear. Now it's back as loud as before.
Alero :: 2003 Security Light Stays On Preventing Engine To Start
For the past few months security light of my 2003 Alero keeps on activating preventing the engine to start or it doesn't even crank.
I always do the reset technique..."Turn ON the engine key for about 20 minutes and wait till the flashing security light become solid before starting the engine." Today when I started the car the security light comes ON and stays on for my whole 50 Kilometers travel. When I reached my destination,I tried to turn ON and OFF the engine waiting for my luck to have the solid security light to come OFF,but no luck.
Will this problem have any effect on the performance of the car? Will the car stall while I'm on the road?