Passat (B5) :: 2003 - Engine Coolant Temperature Sensor Replacement
Jan 2, 2010
I have a 2003 Passat 1.8t(B5.5) and I need to change my engine coolant temperature sensor. I have search and found conflicting answers on the forums as far as it location and description. From what I can see it is located near the bottom right hand corner of the radiator(Driver Side). I have removed the sensor and I did see some antifreeze spill out. I examined the sensor and it is blue in color with a rounded top. I called my local auto zone and received a replacement part but it is green and looks a little different.
I understand that the blue one that I removed is no longer produced. My question is is this the right sensor and the right location? All the write ups I can find say that it is located in the back of the engine yet I cannot find one there. Also when I replaced the blue senor with the green one the fan on my car is spinning at high speed(the AC fan) and will not idle. I am wondering if the new sensor is faulty/ incorrect or if i simply replaced the wrong sensor.
Here is a link to the replacement part I used : [URL] .....
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2002 ford sport trac.I have been having an ongoing issue that started with the engine cranking but would not turn over until an hour passed. After replacing multiple parts (cam shaft sensor, crankshaft sensor, ignition pack) I am now down to poor fuel economy as the last of the issues (roughly 12 in the city and 15 highway). I was told the issue may be the engine coolant temperature sensor going bad so I decided to replace it. I found this was very difficult due to it being a plug and locking pin design and in a very tight spot in the engine.
I tried to purchase a replacement and the parts store kept trying to insist on selling me a part with threading. I finally found someone that figured out the issue and found the part for the 2001 sport trac had the same plug style with clip that did fit but was shaped a little different on the sensor end which I assume was due to being aftermarket. I noticed that there were two plugs side by side and the one easiest to access was on the left and I was told the one on the right was the sensor that gave the temperature reading to the gauge.
After installing the engine coolant temperature sensor I found the temperature gauge on the dash now will not respond and is sitting below the cold end of the gauge completely off. Is it possible this is because the part was for a 2001? Is the sensor on the left (passenger side) the engine coolant sensor?I would hate to put the old sensor back in just to test if that's the issue due how difficult it was to put that locking pin back on. What to check that could resolve the gauge issue before pulling this sensor back out?
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I recently got the solid check engine light for my 2003 VW Jetta 1.8T GLS. I used a bluetooth OBDII dongle and Torque Pro to pull the code P0118. This seems to coincide with my symptoms:
Car idle at start in park stays around 1100RPM then in reverse it drops to 1000RPM then back into park and it stays around 900RPM and keeps that at idle.
If I start the car then immediately reverse out of my driveway then the car has a very rough idle but if I wait around 5 seconds in park idle then reverse out of my driveway it is smooth.
My car dash thermometer stays pretty close to the bottom low then after about 4-5 minutes it shoots up to 190F and stays. Gas mileage is also very poor.
I looked up a tutorial which shows the parts needed and how to replace the sensor : [URL] .....
I removed the engine cover and believe I found the coolant temp sensor in the spot the tutorial shows. My question is if there is anything I should be aware of before attempting to replace this sensor that this tutorial doesn't cover? I took a screenshot of what I believe is the coolant temp sensor.
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My temperature has been randomly dropping, them back to middle, and recently my engine was overheating because I'm guessing the fans didn't turn on, because I'm also guessing, the engine didn't know it was overheating?
Anywho, during my replacement, I made sure to get rid of the pressure, and the car was cold. I tightened the cap again, but when I took the sensor out, all the coolant spewed out.
Now if I understand this correctly, do I have a leak? I figured the leak I had was coming from the temp sensor as it is.
Here's some pictures for those who'd like to see ....
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Where the Coolant Temperature Sensor is located in the R32? Need to replace it. I searched but luck so far.
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My '04 Passat 4Motion (station wagon) engine coolant temperature gauge, fuel gauge, and outside temperature display all stopped working in the same time. Interestingly enough, car has 32K miles and just ran out of manufacturer warranty 2 months ago.
What could be happening? Should I be checking fuse box or this may be related to some more serious failure?
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Where the coolant sensor is on a 2003 vw passat 3.0 V6 ...
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What is the location of the Coolant Temperature Sensor? I search but I couldn't find a picture or diagram for our car.
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My 2001 Hyundai Santa Fe V6 is giving out a P0118 code, and the "freeze-frame" data reports a -40F for the coolant temperature. That doesn't make sense so perhaps the sensor is faulty or perhaps the sensor connector is loose?
I'd like to take a look at the coolant temperature sensor but I cannot find it. I have scoured hmaservice, hyunda-forums but all the various pics are still not clear enough for me to actually find the sensor. I have seen all the online pics from Hyundai but I can't get my head around exactly where the sensor is - the pics are either too zoomed in or so many things have been disconnected for the purposes of taking the picture I can't get my bearings.
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Where exactly is the temperature sender/sensor is located?
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I drive a 2001 Jetta with the 2.8 v6 with ~125k miles
So for a while my car was giving me a false read on my temperature so I replaced the sensor. I actually followed instructions from a thread on this site. [URL] ....
Now when I go to drive my car, it runs sluggish and misfires if I really give it some gas. CEL is on(however does not return a code when hooked to a computer), and flashes when gassed hard.
I've checked to make sure spark plug wires were reconnected correctly and securely. No leaking has occurred from the temp sensor. shift rod drive unit is reconnected correctly.
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My '09 2.4L Vibe has started to leak coolant around the coolant temperature sensor. It seems rather odd to me.
Who makes the OEM model? It shows as GM Part 88975489.
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I drove my 99.5 7.3 F-350 1 mile to a friends and hooked it to the OBDII to get a code for my abs light.it had not been drove all day. we hooked into the pcm and he noticed the temp at 375* it was idling. is this right he didnt think it should have been that high???Will the engine coolant temp sensor, if it were bad,show a high temp of 375*? On the OBDII it showed a temp of 375* .....
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I was going to order a ECT gauge and was wondering where to mount the sensor. I have already used the port under the T-stat for the coolant filter. The gauge sensor is a 1/8 NPT. Would the block drains be a good location, or is there another location that will work.
I know the coolant filter housing has a port, but I would prefer the sensor be on the motor.
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So I went to a local VW in Milwaukee in March and they saw I was eligible for the Ignition Coil Recall. So they replaced that and the first time I started the car after they did that my car wouldn't start. This was the first time I experienced the problem. I told them and they tried and it started right away. However, for the past four months I've experienced this problem where when I try to start the car it takes awhile to get it started. It doesn't click it just keeps making that loud noise of trying to turn over. I went back to the VW twice and they said the ignition coil is not related to this and they wont do anything for me. My check engine lights been on all along too and they say I need a temperature sensor replaced. They don't even know if this will fix my not starting problem. After spending a little time trying to start my car it eventually starts every time. Checked battery- its fine. Not sure what to do here.
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I have recently noticed that my coolant temperature indication became sluggish. Needle does not make it to "normal" temperature indication and if I turn the heater on it will drop somewhere in between "cold" and "normal" temperatures. Does it affect fuel consumption and so on? I guess maybe coolant temperature sensor is about to die.
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I have a '99 1.8T Passat. The coolant temperature gauge normally reaches operating temperature of 190 degrees within about 5 minutes and stays there. For some reason, after reaching 190, it sometimes drops by 20-30 degrees and is running cooler than normal. Once time it dropped down, then came back up again, while driving a steady 65 mph. The coolant level is full and nothing else has changed.
I guess there are a few possibilities: a thermostat stuck open too far, a failing temperature sensor, bad gauge, or loose connection at the sensor. The car has 145K miles and the thermostat and water pump were replaced at about 100K miles. What is going on? If it runs a little too cool, is that a big deal? How would I diagnose it? Where is the temperature sensor?
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As a Prius driver, I have driven my 2012 Prius more than 110,000 miles. I love the car and have a suggestion on improvement - Create new software to allow the driver to monitor engine coolant temperature and RPM from either the dash display or touch screen display.
I like knowing if my car engine is up to temperature before punching it on the freeway ramp or about to overheat before an idiot light goes on.
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2003 Hyundai Elantra, 1975cc engine, XD. P0198 Error Code.
I know this is the Engine Oil Temperature Sensor High code and I have seen indications this may mean high voltage on this sensor. My problem is I cannot locate this sensor on the engine. From what I have read this sensor is supposed to be on the driver's side of the engine on the head, rear side.
On my engine the head was replaced (unknown to me when I recently purchased the vehicle). From all indications this is not a CVVT engine. The air intake has a MAP sensor that is connected and appears to be functioning properly. The driver's side of the engine does have two coils but I can see no other wires from the wiring harness toward the rear of the head other than leads to the starter.
The cam sensor is located on the passenger side of the engine, rear side. I have found the oil pressure sensor and crankshaft sensor on the front side of the engine block toward the driver's side. I have found and engine temperature sensor on the driver,s side of the engine on a housing connected to a radiator hose.
Oddly enough there was an OCV hanging on the harness toward the front driver's side of the wiring harness. Adjacent to this plug is a second plug on a shorter lead that is not connected to anything. Both of these plugs have two leads but are shaped differently oval for the OCV and the other is rectangular. I am wondering if this rectangular plug is for the engine oil temperature sensor? What I cannot see is where the temperature sensor would screw into the head on the front driver's side (near this plug).
I went to NAPA today and they do not have an engine oil temperature sensor listed, but I was able to find one on line. I cannot find a connection point on the head that looks like the picture of the sensor on-line.
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I have a 2003 Dodge Grand Caravan. This week I encountered the following:
First Symptoms:
1.Red Battery Light
2.Check Engine Light
Action Taken: Since car is 9 years old with original battery, I replaced battery. Boy, that battery was really good.
Symptoms observed after battery installed
1.Red Battery Light
2.Check Engine Light
3.0 reading on Engine Temperature
Action Taken: Tightened battery cable nut and red battery light went out. Took car to local mechanic who found and reported –“Code 1478/Battery Temp Sensor, tested/was overvoltage allowed (4.9 for more than 3.2 seconds). Sensor located internally in PCM. PCM will have to be replaced.”
Symptoms observed on drive home: Drove car home. On the way, the battery and check engine lights went out. Engine coolant temperature came up ¼ scale. Cruise control would not work. Later, during drive, the battery and check engine lights came back on, cruise control continued to be nonfunctional, engine temperature gauge went to 0.
Action Taken: Took car to local dealer who replaced the PCM at a cost of $605 for the part and $135 for labor.
Subsequent Observations: After 45 miles on the drive home the check engine light came on.The car was driven 2 days later. Battery light came on for about 5 miles then went off; check engine light remained on for the entire drive (~40 miles); cruise control remained nonfunctional and coolant temperature indicator read about ¼ scale.
What is/are the likely cause(s) of all these problems and what can I do? We've had very few problems with this car to this point, but these issues are really getting expensive fast.
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Where can a transmission temperature sensor be mounted on a 1999 manual powerstroke transmission? What is the part number for an applicable sensor that will work?
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