Mazda - Protege :: Faulty Upstream Sensor Cause Error CEL?
May 31, 2011
If the upstream pre-cat sensor is bad could it cause a P0421 CEL error? 2001 Mazda Protege L4 2L 116,800....
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May 31, 2011
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Mazda - Protege :: P0421 Error On 2001 LX 2.0 4 Cylinder
Would hitting the upper catalytic converter with a rubber mallet free up anything that may be causing the P0421 error and CEL to come on? I need to know if it would do any good or any harm.
View 7 RepliesMazda - Protege :: 2001 LX 2.0L - CEL Message Of Error Code P0421
Last year I posted my CEL problem of P0421 and replaced both upstream and downstream sensors. I passed smog because I was allowed one error message and that message was Cat not ready. I had cleared the CEL light and drove long enough before inspection to reset all but the Cat not ready message and no CEL.
Last Friday I had to clean my throttle body butterfly valve and interior housing and I also had to replace the air inlet hose that connects the air cleaner/MAF sensor to the throttle body because the hose had some splits allowing air in. I disconnected the battery before doing any work.
My new question: Could air entering freely through the splits in the inlet hose, thus bypassing the MAF sensor, and being delivered directly to the throttle body, cause an error message of P0421?
Mazda - Protege :: 1996 - Engine Oil Sensor Leaking
1996 Mazda Protege has 125,000 miles. Checkup this spring noted that the engine oil sensor was leaking, but did not note if a problem. I check the oil monthly with no problems with the oil going down. Many posts about engine oil pressure fixes, but none about leaking issues. What happens if I ignore the problem?
View 5 RepliesMazda - Protege :: 2001 - What Does A Pink Oxygen Sensor Tip Indicate
I have a 2001 Mazda Protege LX 2.0 with 121,000 miles. I removed the front oxygen sensor today to replace an exhaust pipe, and I noticed that the tip has a red/pinkish color on one side only. What this would indicate?
The only thing I could find online is that a pink tip indicates lead in the fuel. This is impossible, since the only gas station I frequent is a Conoco which is always very busy. Plus, I haven't noticed any performance issues from bad gas, and not to mention the fact that leaded fuel has been completely phased out for 15 years. What's weirder is that the sensor tip is only pink on one side - I'm guessing it's the side that's facing the exhaust manifold.
Mazda - Protege :: 2003 - Camshaft Position Sensor Location?
Where the camshaft position sensor is on a Mazda Protege5 2003. I can't seem to find any information about this particular car.
View 2 RepliesYaris/Scion & Vitz :: 2001 Echo Faulty ECT Sensor - Error Code P0125
I'm getting error P0125 on my 2001 Echo, which points to possibly a faulty ECT sensor.
Where is this sensor located? Seems like under the air box? Is replacing this part as annoying as it looks? And, are there any other possible causes for code P0125?
In case it's related, I will mention that code P0171 (mixture too lean, I believe) is present as well, and the car does hesitate upon initial acceleration when standing still. Once it's moving, it works fine.
Maybe it's time to start thinking about replacing this car... it has 216,000 miles...
Celica :: Downstream O2 Sensor In Upstream Spot - No Power?
I actually found headers for my 5sfe and I took them cleaned them up real well and put them on.
The problem I am having is that the o2 sensor space on the headers is for the threaded style sensor and the upstream that comes stock is the bolted on style although the downstream does have the threads.
Can I take the downstream o2 sensor and put it in the slot and since I have put on headers it takes out the cat will this make the car run like crap? also I have tried to take it down the street with just the headers and I had almost no power.
would this be caused by the downstream o2 sensor in the upstream spot and no exhaust other than the headers?
Accent LC (2000-05) :: 2001 - Upstream O2 Sensor Socket Is Loose
My accent (2001, 1.6L, with 179k miles) has service engine soon light on. Brought it to autozone and they said the upstream O2 sensor needs to be replaced. I borrowed the socket to take out the O2 sensor. It's very difficult even with the tool, because the O2 sensor was stuck with a lot of rust. I used an extension bar to get it out finally, but now when i tried to put the new sensor in, I found the hole's thread is very loose. Tried very hard but can't get the new sensor in securely. It seems I had to replace the whole exhaust manifold. The manifold is very expensive(because it has a build in catalyst converter). I'm wondering is there a way to make the O2 sensor in secure without replacing the whole thing? if I had to replace the manifold then I probably will just get rid of this car.
View 1 RepliesCamry :: 2004 - CEL Code For Upstream O2 Sensor / Idles Very Rough
I just bought an 04 camry 4 cylinder. It was running perfect when I got it but the moment we got home it threw a CEL. The code was for an upstream o2 sensor, however I did a resistance test and the heater circuit is fine. I did a voltage test on the blue and white wires and I got 3.3v and 2.9v. I don't remember which wire gave me which voltage at the moment. I would like to know if this data is a good thing or if it's broken. I do not have any data to go off of, and I couldn't find the factory service manual online. Its also worth mentioning that it idles very rough and the catalytic converter is giving a rotten egg smell but not all the time. When neither of these things happen the CEL goes away. I do not want to start throwing parts at it.
View 1 RepliesCamry :: 2006 - Check Engine Light Came On - Code P0032 For Upstream O2 Sensor
This issue pertains to a 2006 Camry LE 4-cyl.
My check engine light came on - code P0032 (upstream O2 sensor). I bought a new sensor from O'Reilly Auto Parts. After installing the new sensor, the car would jerk while accelerating. This continued to happen until roughly 30 miles or so when the engine light came back on and the jerking stopped! I re-scanned the car and it showed the same error - P0032. I then erased the code, and the jerking issue resumed.
I assumed this was caused by a faulty O2 sensor. I returned and got another one. Same issue.
Is this the result of not getting an OEM sensor from the dealer? Or is there something else I should be worried about?
Ford Excursion :: 2001 V8 - Code P1131 / Lack Of Upstream Heated Oxygen Sensor Switch
I have a 2001 Exrursion 5.4L V8. The code P1131 comes up and it says "Lack of upstream heated oxygen sensor switch - sensor indicates lean - bank #1". I hear it could be the sensor that is bad or there is a vacuum leak. It runs like a champ, no spitting, no sputtering, no missing, no ruff idle. What do I need to do to fix it or where do I need to start looking?
View 3 RepliesFord Ranger / B-Series :: 1998 - Code P1405 - DPFE Sensor Circuit Upstream Hose
I just bought a '98 Ranger 2.5l 2wd. After driving it for a week or so I got a P1405 Code. After a quick google search I got :
P1405 Ford - DPFE Sensor Circuit Upstream Hose
Possible Causes: - Faulty Differential Pressure Feedback Electronic (DPFE) sensor (EGR pressure sensor)
- Plugged or damaged EGR tube
- Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted
- Differential Pressure Feedback Electronic (DPFE) sensor circuit poor electrical connection
Now, I have done my research between forums and youtube and have found this EGR system to be quite. I've gone ahead and replaced my DPEF. I took an air hose and blew out all the small lines coming into the DPEF. I still have the engine light. My next move is to get a volt meter and see if I'm getting power to the sensor.
My question is about this particular code and is it possible I need to look farther into this EGR system (EGR Valve, EGR Hose, etc.)
Ford Super Duty (1999-2016) :: 2008 F250 V10 - Bank 2 Sensor 2 Oxygen Sensor Is Faulty
My Bank 2 Sensor 2 oxygen sensor is faulty and I need to replace it. The guys at the parts store were pretty certain it is downstream driver's side, but I just want to make sure before I PB Blasted and removed it. 2008 F250 SD v10 ....
View 1 RepliesMazda :: 2002 Protege 5 - Hesitation At 3k Rpm
Have 2002 mazda protege 5 . During acceleration at 3000 rpm the engine hesitates. Computer said o2 sensor, replaced it but that wasn't it. Drilled out both catalytic, that wasn't it. Found hole in mass air flow tube, figured that is it. I haven't replaced that yet, however I used gorilla tape thinking it would be a temporary fix but that didn't work. I know I need to replace that tube, but think that it may now be a fuel pump issue??
View 5 RepliesMazda - Protege :: 1999 - Won't Start When Hot
I have a 1999 Mazda Protege. As of last summer it started giving me problems with not wanting to start after I had driven it around town for a little while. (IE: to the grocery store, to the bank and then to my sister's house. It wouldn't give me the same problem if I just went to the grocery store and back home. It would start up fine and I'd be on my way. Only when I went somewhere and shut it off then repeated that a couple more times.) I took it to a mechanic who wholeheartedly believed it was the coil packs not allowing my car to function properly.
So we replaced those and everything seemed on the up and up. (Keep in mind that this was towards the end of summer and the temperature was dropping.) The car was perfect all throughout the fall and winter, but now that the temperature outside is starting to rise again it's beginning to do the same thing it did last summer. I don't want to take it to another mechanic that's going to have me dish out an extravagant amount of money again only for the problem to persist.
Mazda :: Protege ES 1.8L - Rattling And Knocking Front End
2000 Mazda Protege ES 1.8L
What's a good way to find whats the cause of all the rattling and knocking in the front end of my car when going over uneven terrain? It seems that noise appears only if one of the wheels is lifted up a little bit. I am attaching a picture describing the "motion" here:
Steering wheel doesn't shake when driving at high speeds and is fairly stiff, but it does pull to the right a bit, maybe because I didn't perform a front end alignment (I know this is not good) after I had most of the stuff in the suspension of the replaced; all 4 struts + boots + mounting blocks, ball joints, control arms...
Now the only part, I didn't replace was the sway bar link on the passenger side and it's being knocking for 3 years. The one on the driver side was replaced at the time the struts were replaced but I didn't have enough money to pay for the other one.
Another mechanic told me when I was quoting that sway bar links aren't really necessary as a safety feature, and a google search showed me that there are people that just take the sway bar off the car, so I left it there and just tried to live with the noise. now I am noticing the driver side is knocking as well, and I am wondering if it has to do with because I didn't replace the one in the passenger side?
I just want to rule out the possibility of another component being the cause of the noise because I am prioritizing safety over ride comfort in my attempts to save some money.
Mazda - Protege :: 1996 - A/C Isn't Blowing Cold Air
it was over 100 degrees today in Lawrence, Kansas and on the way home from work, the air conditioner stopped making cool air. Hot air now comes out. This is a different problem that the poster before me seems to have. Mazda Protégé, 1996, 128,000 plus miles on it.
A reconditioned one was installed in 2006, compressor replaced in July, 2012.
Mazda - Protege :: Loud Tire Noise Between 20 And 40 Mph
I read here that some tire noise can be caused by bad belts. How do you know if the tire belt is bad? My tires get loud between 20 and 40 mph. Mechanic says the tires are OK but to replace them to get rid of the noise.
View 7 RepliesMazda - Protege :: Brakes Stuck And Burning Up
Basically, my car (2002 Mazda Protege) has been acting like my brakes are engaged. Not all the time, though - The first time I get out and drive it, it drives smooth as silk like always. But then after I put it in park and then get back in and head out (I'm a delivery driver, so this is constant), sometimes it feels like the brakes are constantly being pressed. No, the emergency brake is not on. Most of the time it's almost not even noticeable so, like an idiot, I put it off for the past week. But today, it was very, very, very bad. I was having to press the gas to the floor to get up to speed, and then it was constantly trying to slow down. My brakes were definitely getting burned up while it was doing this, but luckily it stopped.
It may be unrelated - I know I have an oil leak, but today I saw a very unusual spot where something leaked out in my driveway. I checked my oil, and it was where I expected it to be, but this was a relatively large stain which would be very unlike my current leak.
Mazda - Protege :: Little Hesitation And Jerkiness During Acceleration
Started my car yesterday and as I was accelerating, it made a very loud noise. It sounds like normal engine acceleration noise, only ten times louder. It was present whenever I accelerated, but not when I was coasting or idling, and not when the car was in neutral. (It's a stick shift.) During acceleration, there was a little hesitation and a little jerkiness, but not horrible. The problem came on suddenly - no problems with the car before yesterday.
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