Passat (B5) :: O2 Sensor Malfunction - Cold Startups
Dec 27, 2011
I just replaced two bad sensors, (bank 2, both sensors). I went through three cold start ups, and the autozone codes still claim the sensors are rubbish.
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Dec 27, 2011
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Passat (B6) :: Front End Vibration During Initial Cold Startups
Just recently I've noticed my front end on my B6 3.6 4mo vibrates during the initial start-up in the morning. After the car warms up the vibrations go away. I had new brakes, oil change and tire rotated recently. I checked the cold start air pressure on the wheels (Nexen 235-40-18) and they are at 38 PSI, cold. All tires still have their balance weights also. I can feel the vibration in the steering wheel and seat. This vibration only started after I had the mentioned work done on my car.
View 4 RepliesFord Super Duty (1999-2016) :: Transmission Sensor Malfunction When Cold Outside
Today I ran into a person I use to work with and was informed he had bought almost the same truck as mine. He also informed me that his has spent most of the winter in the shop. Reason being he claimed the transmission had a sensor that malfunctioned when it's cold out. This sensor lets the truck turn over but it blocks the truck from starting. Now it has got to 10 below zero only once this winter so far, my truck is kept outside, no problem yet.
View 3 RepliesPassat (B5) :: Possible MAF Sensor Malfunction
Heres my laundry list of codes pulled up after my engine light came on my 2004 Passat GLS 1.8L T, 4 motion sedan. Blue
P0171B--B1 Lean
16555--B1 Lean
16684--Misfire
16685--#1 misfire
16686--#2 misfire
16687--#3 misfire
16688--#4 misfire
17519--O2 B1 Lean
17544--B1 Lean
18011--Internal Module Malf.
Was told it COULD be :
1) Mass air flow sensor
2) Crankcase breather
3) coils
The car seems to be dogging when I slow down at lights or take corners and whatnot. It did have trouble turning over but chalked that up to not running it for a day and it being -20 degrees for a stretch. I was told it would be easy to rule out the MAF sensor by running the car and unplugging the sensor, and drive it a bit. Is this recommended? If so, where on earth is this dang thing? I followed the hose from the air filter housing cover down towards the engine but cannot see it. What am i looking for here? I hoped it would be easier to find from all the forums and videos i've seen but none working on passats in those videos. Can it be easily accessed? The guy at the VW dealership in town said its tough to get at, but so is money. I should have said that. Dang it.
Prius (2010-12) :: Occasional Shaking / Rattle At Cold Startups
Currently working on a friends 2011 Prius with roughly ~340,000 miles (!!!!!) that was used as a taxi, until now, he bought it from the taxi company and converted it his own daily.
I did a regular oil change on his Prius, and decided to change the spark plugs as at the time there was some sort of occasional shaking/rattle at cold startups. The shaking was gone after changing the spark plugs. This was all done back in March. Yesterday, he was driving, and all of a sudden, the knocking came back, a check engine light, and white like cloud smoke appear. Check Engine lights were P0300, P0301, P0303 (misfire cylinder). I told him to bring it over, I took a look, and his invertor engine coolant was all the way down (he told me he filled it up to top just two weeks ago). I originally thought maybe it was the ignition coils (for shaking), but the white smoke didn't make sense. So I purposely filled the coolant above the full line, and took it out to drive for about half a mile, and just as I suspected when I opened the hood, the coolant level decreased, at least by an inch.
I did not see any oil leaks, and the oil levels were just fine. The car just seems to shake/rattle at startup and when accelerating at low speeds (roughly 8 - 15 MPH) and than goes away, and drives normally. It still does blow off that white/cloud smoke when accelerating hard on the engine though. As for the smell of the smoke, I can't really tell, it is definitely not sweet, but it kind of smells foul/bad.
At this point, I am pretty sure this engine is gone, and the gasket/seal is blown.
Ford Super Duty (1999-2016) :: Transmission Malfunction - While Coming To Stop Bucking In Cold - Sensor?
I have a 2000 ford f350 7.3l with a auto transmission(4r100) and I have had problems with it . It started a while back when the transmission is cold like in the morning when I put it in drive it acts like when you don't push the cluch in on a standard when coming to a stop kind like it's bucking and this only happens when it's cold when it's nice and warmed it's fine so I changed the whole transmission and put a billet torque converter and I'm still having the same problem can it be a sensor or something electrical ?
View 14 RepliesCamry :: 2006 - Loud Noise Coming From Idler Pulley On Cold Startups When Put It In Gear
I have a 2006 Camry 2.4l and I'm hearing a loud noise coming from the idler pulley on cold startups when I put it in gear. I don't hear it when it's in park. The noise gets worse if you turn the a/c on. I have replaced the belt, idler pulley and top motor mount. I took the belt off and cranked it when cold and there was no noise even in gear. I can see the idler pulley moving and can confirm that's the noise but what it causing the belt to make it do that? Could I have bought a defective idler pulley?
View 3 RepliesPassat (B5) :: 2005 - AC Malfunction / Blow Hot Air And Sometimes Cold
2 weeks ago my ac on my 2005 passat started working on and off, sometimes it would blow hot air and sometimes it would blow cold air. I took it to an independent shop (which we trust, they been working on our cars for a long time and never been ripped off...but first time I've taken a Volkswagen to them) and they just did an AC diagnostic test and re-filled the Freon, replaced the filter...it worked for 1 hour and went back to blowing hot air again, so I took it back and they said a valve stem was loose, causing the AC to work sometimes and not others, so they replaced that with a new one, my AC worked for 4 days...than on the 5th day it blew hot air again.. What could possibly be causing this??? It is stressing me out, especially since I need AC in hot Houston summer weather.
View 15 RepliesGolf IV R32 :: TPS Sensor / TB Malfunction
so I have been getting a 'hiccup' if u want to call it that, with the tps sensor and/or throttle bodie. every so often I like to scan my car for kicks :p and noticed that (not all the time) my g188 or g187 tps leave a code but no CEL. I know I been getting an odd bog like feel when flooring from a stand still or low RPM and have done some reading on it, the tps could be related to that and since I do get a code but no failure I want to see if maybe it's going bad? also since the tb and tps are one unit and $$$ how often do they go bad?
View 2 RepliesGTI 337/20th Anniversary :: 2.0 Low Oil Light Comes On - Sensor Malfunction
So the motor has a new oil pump and pickup and was all cleaned out. Sludge is not the issue here. I'm running the royal purple filter ( the equivalent of mann 950/4) and royal purple 5w30. My heart dropped after the light came on on the first drive. I pulled out over and checked the oil and for leaks and... full with no leak. So I checked the temp and proceeded to drive home. I don't have an oil pressure gauge but I'm getting the bottom of the fill cap with oil so I know it's making it all the way to the top of the motor, and the motor is not loud or sounding starved.
Basically, I wanted a second opinion that it is most likely oil pressure sensor malfunction. Garrett 60 trim, feed and return lines are brand new and sufficient diameter.
Touareg :: Tire Sensor Malfunction On Vehicle Status
I'm getting a tire sensor malfunction on my vehicle status. Is it something I should worry about?
View 6 RepliesCamry :: 2002 XLE - CEL P0500 / Vehicle Speed Sensor A Malfunction
Recently, my I4 XLE camry with abs came up with a cel P0500 - Vehicle Speed Sensor A Malfunction. Where the vehicle speed sensor is located? i doubt this thing's hard to service, but so far i have no luck finding it.
View 13 RepliesLexus GX 2004-09 :: 2005 - Right Front Speed Sensor Malfunction
I noticed my 2005 GX470 started to "bottom out" when going over speed bumps or potholes. The air suspension seems to work fine raising and lowering ok and the general ride is still quite smooth. From some simple searches on the board it would seem that leaking of the air suspension could be the problem?
I did a code read and got the following error codes none of which sem related to the problem.
Code
CO200 Right front speed sensor malfunction
C1223 Malfunction in ABS control system
C1340 Open circuit in central differential lock signal
C2172 tire pressure, transmitter identification number not registered
Lexus GX 2004-09 :: Auto Windshield Wiper Malfunction - Sensor Going Bad?
My auto windshield wiper function has become real sensitive...When driving in the lightest rain or even mist, my wipers start intermittently, then go faster and faster until they are going steadily, and in medium-light rain, often go to high speed. They never did this in the past, this has recently started. I turn them off, then back on and the process repeats. The auto wiper was always wonderful in the past, but not now.
Is there some kind of adjustment for this problem? Is my windshield sensor going bad?
Jeep - Grandcherokee :: 1994 - Check Engine Light And O2 Sensor Malfunction
So this little gem of an SUV has been good enough to me over the year that I have had it, but it is one of those used vehicles that has me scared to look underneath cause there is always something a miss.
I have been having some power problems and the OBD check engine light has been coming on. The engine like to putter like if it's not getting enough fuel from a clogged fuel filter when it gets going, hot or cold. Have confirmed that the fuel pump is with proper voltage and pressure. Though haven't noticed a big difference with the new filter. The check engine light cycles a code of 21, which is refinanced to the O2 sensor, both upstream and down stream. That tells me that there are TWO O2 sensors for this model. And research has confirmed this. One ahead of the cat and one behind the cat.
Here's the kicker, I only have one O2 sensor at the head of the cat and the location of where the second one would be located is only a solid section of pipe from cat to muffler. I haven't been able to track down the plug connection for the second sensor and these codes and problem only came after I gave the Jeep a tune up.
1994 Jeep Grand Cherokee Limited V8
Corolla / Matrix 2009-13 :: P0500 Code - Vehicle Speed Sensor Malfunction
My car is now 24/7 with this error which is Vehicle Speed Sensor malfunction an there seems to be no way of solving it, symptoms are:
*Speedometer not working, needle always in 0
*Power steering not working
*Car wont past 3rd gear
*Check engine light and power steering light on
I checked all 4 speed sensors and the wiring looks good and they look good. Also if i hit a bump, issue goes away for a couple of minutes, until i hit another, etc, so looks like a wire or short circuit, cant tell. Is there a speed sensor on the transmission as well? where is located?
Sonata I45 (YF - 2011+) :: Code P0705 - Transmission Range Sensor Circuit Malfunction
This is what I get from the DTC .....
DTC P0705
Description : transmission range sensor circuit malfunction
State : History
I have done some google search on the above diagnostic trouble code P0705 and as i understood , it indicates that the Engine Control Module (ECM) has received an input error from the Transmission Range Sensor (TRS).
Since the check engine light illuminated two times (two separate occasion) then it turns off now; the ECM is actually receiving input signal from the TRS.
So that leads me to think that the TRS is actually working but the problem might be one of the following two:
1- Open or short in the TRS circuit?
2- Dirty transmission fluid.
What do you think the steps i should do first of all ? how would i check the transmission fluid since my vehicle has no transmission fluid dipstick. My driving condition would fall into "severe" category and it reached 60,000 miles now ...
Accent MC (2006-11) :: CEL / OBDII Code P0141 - O2 Sensor Heater Circuit Malfunction
CEL/OBDII code P0141 - O2 Sensor Heater Circuit Malfunction
So I just bought this car 64k well maintained but cant get rid of the check engine light. Replaced downstream O2 sensor with no luck. As soon as I get home I'll check voltage @ connector. Lets test the O2 sensor connection and test the pins to make sure there is no break in the wires.
Chevrolet - Lumina :: 1996 - DTC Code P0101 - Mass Airflow Sensor Malfunction
So I have a 1996 Chevy Lumina (3.1L V6 engine) and I keep getting a DTC code P0101, which is a Mass Airflow Sensor malfunction. It's rather annoying because every time this happens, my engine shuts off. I'm talking no power steering, no power breaks, no acceleration, nothing. So I replaced the mass airflow sensor and it continues to stop about every five minutes. However, it does something odd and that is that the car drives just fine when it's in Overdrive and stops when it's in regular drive. I don't know if that's important, but I thought it might diagnose the problem.
View 4 RepliesFord Escape / Hybrid :: 2009 - Tire Pressure Sensor Malfunction Fault
The facts: 2009 4x4 V6 Escape with Valve stem mounted TPMS
I am getting a tire pressure sensor malfunction fault. The warning light is on and the error message is displayed on the little screen in the gauge cluster.
What I have tried: First I should say I have replace to defective sensor twice now...
1) I put the escape in tpms train mode by hitting the hazard switch off/on about 6 times.
2) I used the train tool to train all the tires but there is one that is giving me trouble and will not train.
3) I tried deflating the problem tire and inflating it to the specified pressure given on the be pillar of the escape (30 psig)... after inflating it I tried to retain it with no luck.
4) I tried rotating the tires and as I mentioned earlier I have replaces the problem sensor twice. Still can't can't get the problem tire to train.
My thoughts:
1) I don't think this is a module error because I can train the other tires and since I rotated them I know their position is not a factor.
2) its possible that I have got two defective tpms sensors but I think that is unlikely.
3) I have read of another procedure to put the escape in tpms train mode that requires you to turn the ignition on/off, step on the break pedal, tap your head and rub your belly, etc... but I have not tried this method. Is there a difference from this train mode verse hitting the hazard switch on/off about 6 times?
4) Does the train tool only work on previously trained sensors? do I need to register the new TPMS sensor with the TPMS module? I have an OBDII tool that connects to scanXL software on my laptop which included the ford proprietary protocol. I looked for a way to program a tpms sensor (similar to how I did it with my toyota) but couldn't find the option.
Ford F-150 (2004-2008) :: Rear ABS Center Speed Sensor Input Malfunction
I have an ABS light on. I have crawled under the truck I don't know how many times everything is connected just as it should be. The wires did have to taped up because they burnt into after getting against the exhaust at some point, but I had fixed that awhile ago, I've even tore back into the tape and re-did everything again, nothing gets rid of the ABS light. When this first happened it would go away after I turned the truck off, but would come back after using the brakes a few times, especially harder stops. Then it got to where it just came on and stayed on, and didn't go out no matter what. Thinking my ABS speed sensor went, I bought a brand new motorcraft one from rock auto it fits perfectly in the rear, plug looks good. I can't find NOTHING that would keep this light on. The code is always the same "Rear ABS Center Speed Sensor Input Malfunction", how to get rid of this?
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