Golf IV / Jetta IV :: Temperature Fluctuates Between 120 To 130 Back And Forth
Dec 5, 2015
So i decided to be a man and finish my 3.6vr in my gti project. Filled the coolant system with g13 and let the car run for a good half hour but the temperature only went to 130 degrees and would go back down to 120 and back to 130 and back and forth. With the heat turned on it was only slightly warm. Top hose was slightly hot and the bottom hose was just warm. So i tried massaging the hoses some more to let any air out and saw no bubbles. So i decided to go for a drive around the block and temps still stayed the same. So i'm leaning towards a thermostat but the motor was pulled out of a running passat with no problems.
Also its a brand new oem temp sensor
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About 4500 miles ago, I had the timing belt, water pump, thermostat, and all the accessory belts replaced and now, the water temp gauge sometimes rises rapidly from "normal" all the way to the "red" and back within about 15 seconds! This is on a 2006 Elantra GT
Should I replace the "coolant temp sensor" or do I have a real problem that needs repair?
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My car is a 2001 Jetta 1.8t. the car is bone stock, I can not hold boost and it fluctuates all over the place. the dv sounded like a flutter until I bypassed the n249 now it sounds like a steady pssh. car still would only make 4lbs of boost and drop to 1-2lbs after 3500rpm. I pulled the line off the n75 to wastegate and did a pull. it boosted to 8lbs spiked to 15 and held 4lbs, if the tires spun it would spike to 12-15lbs and drop to 4 again. I replaced the n75 today and now will still spike high if I spin, with traction boosts about 8lbs which I believe is stock but then drops to 1-2 lbs then up to 4 down to 1-2 sometimes up to 6, it seems random. I also pinched off the dv to see if that was the problem but same thing.
I'm wondering how my car could lose boost with the wastegate actuator unhooked, I can not find a boost leak(not saying there isn't one, but haven't found one), the car holds more boost with the n75 unplugged and under acceleration, with n75 plugged in it seems like 3 surges per gear?
Car throws one code p1473 its an evap code.
The wastegate sounds like its closing when I pull the rod and let it go, lots of tension on it.
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Something strange started happening to my '04 Prius yesterday and it happened again today. We are experiencing unseasonably warm temperatures here in Western Oregon for October and when I left my house this morning at 6:30 am, it was about 55 degrees. I have a half hour drive to work on a mixture of expressway, freeway, expressway again and then the two-lane highway.
Anyway, yesterday (and today) when I'm almost to work, my temp. gauge drops down to 37 degrees. This causes that yellow light to start blinking indicating that the engine will not shut off because of cold temps. It will warm back up to 45 degrees a minute or two later. Why is this happening? It for sure is not 37 degrees outside. Is my temperature sensor going bad? Is this exhibiting the behavior of a sensor going bad?
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Looking at my circle track car when they told me my air intake temperature sensor was missing this is a picture online I found: [URL] ....
The hole is filled with a bolt and some epoxy. I don't see where the cable is for it. What will this do to my car? It is a track only car.
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I have 2000 Jetta 1.8t. Over the last few weeks it idles wierd when up to full operating temperature. The check engine code is p0411.
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I have a 2003 Jetta 2.0L. I've noticed for the last few days that my engine temperature has been getting pretty high. We're going through a pretty intense heat wave where I live and that surely part of the problem but I've also noticed that two large fans at front of my car don't start up right away when I start the car. Is it supposed to be this way? Do they only kick in when the engine reaches a certain temperature?
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Any way to test the radiator temp sensor for faults? My radiator fans arent kicking on, and my car will get upto 215f on the drive to work. I am also going to replace the thermostat and test my radiator fans and relay today, but I have no idea how to test the sensor.
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I have a 2002 1.8T tiptronic with around 150k Kms. Recently, the transmission has started slipping, more so when at running temperature than when cold. It feels like when a certain amount of gas is applied is when it starts slipping. It can slip immediately after 3-4 and 4-5 with continued acceleration, or will constantly slip while in 5th if trying to drive at speeds greater than 90 km/h (with very gradual acceleration to that point).
Does this sound like a clutch wear issue requiring a new transmission, or more like a valve body issue?
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I have a 2005 mk4 gli and the other morning I went out to start my car for work and all I got was crank no start. I then realized my fuel pump wasn't priming when I opened the driver door. After work I came back and checked the fuel pump fuse and swapped the relay with another I had, still nothing. A buddy of mine decided to check the connector at the fuel pump for power, using a power probe I believe he hit all or the majority of the wires with 12v of negative and/or positive power. He then unplugged the connecter and plugged it back in and the car fired right up. But I noticed that my fuel gauge, engine temp gauge, and outside air temp readout were all not functioning. I've searched and searched without being able to narrow down a solution.
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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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I have a 2002 jetta 1.8t that overheated on me out of no where i have read some post and couldn't really find what i need it never overheated on me before and this was the first time and when ever i open the reservoir where you put in coolant everything spills out its my first time owning a volkswagen, it happens as soon as i start driving like 30 secs and temperature starts to rise.
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I have a 1.8T with 152kmiles
Recently, both the coolant reservoir 'Y' connector and the driver side coolant flange cracked and I was shooting G12 all over the engine. I've replaced both of the parts and the coolant temp sensor with a "green top". Reservoir was refilled with the proper ratio of G12 to distilled water, ran for a bit and topped off accordingly.
This morning I started my drive to work and the engine temp was at 0 for a minute or so and started to climb slowly to 190. It stayed at 190 until I took the exit to the highway and the temp slowly started to rise while I was at 60mph. I immediately turned around and went back home with the heat cranked to high. With the heat on, the engine temp would slowly go down but then rise again if I, A. turned the heat off or B. made a hard pull up to ~55+mph.
I popped the hood and the coolant was not boiling and I couldn't see/smell/hear any leak. could this be the thermostat or is this a water pump issue? I plan on taking the thermostat off and checking the pump empellars for any shards. I'm not sure but I do believe the water pump was replaced by my parents while I was on deployment.
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Lately, I have noticed the idle on the R to be a little lower than normal and it is fluctuating with the AC on. The plugs were done about a year and 10,000 miles ago with OEM NGK iridium, along with the rest of the 80,000 mile maintenance items. I have no engine faults and religiously use Shell 93. The engine has the UM ECU/DSG [spark cut] tune with Milltek engine-back exhaust [no cats/resonator]. Is there something that I am missing that may be the culprit? I need to pull the plugs and check them because with any idle issue I usually suspect plugs but have never had an issue with plugs failing this soon.
Related topic; what spark plugs are people having good luck with the UM combo tune?
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Not sure what's up with my car at the moment guys, but it seems. Whenever I go above about 55mph it feels as if the car is sliding back and forth. Its most noticeable at about 65mph where you can see the speedometer nudge backwards and forwards maybe 2/3mph at a time. I'm not sure if the engine is doing this but it does feel like it stops the starts then stop and starts etc. I'd say its also more noticeable in cruise control also. Car is an automatic 2.0L engine ...
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My fuel gauge fluctuates once I turn the key to Acc, once I fire it up it goes back to empty and climb back to the correct position,
Also once this happens, my MFD starts to act crazy, sometimes it shows nothing, and times gets stuck on the door open screen and my steering wheel controls go dead, if I turn off the car and then on its gets stuck "Volkswagen information" screen.
I disconnected/reconnect the battery everything went fine for a couple of days and then happened again,
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Under load, the car shimmies back and forth. Left to right. But only under load. It will even do it in 5th gear at 1500 rpm. The problem goes away when foot off the gas, or in neutral.
Already did a drivers side axle, passenger side axle, and dog bone mount.
I removed the intake to inspect the transmission mount and this is what I found below. Should it be able to wiggle this much? I imagine the mount is original to the car. Which has 156,000 on it currently.
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So i was driving and I went to shift and my clutch never came back up. Long story short after searching the forums i think it might be my slave cylinder and throwout bearing. There was a puddle of fluid under the car.
I was planning on using this DIY : [URL] ....
Just wondering if all i have to do is follow this up to step 48 and replace the throwout bearing and slave cylinder.
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12v VR6. Have smoke pouring out of the back here. The coolant is really hot but its not smoking from the reservoir. In the second picture you can see a liquid its that brown green stuff. It is fresh and wet not a stain. Also in the third pick there is some of that around the sparkplug wire. Also smells burnt.
The oil in the dipstick isn't milky like a blown headgasket would. However the oil inside the oil cap is a very dark brown. What is it? I'm thinking head gasket but this is my only lead.
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Putting a straight pipe from the cat back on 1.8T mk4? I was thinking going 2.5 inches from the cat back with a tip. But I wanna know how loud it is.
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I just purchased a used 01 Jetta GLS. It came with only 1 key and no fob. My key fits the door and ignition but does not seem to fit the trunk or the back seat lock that gives better access to the trunk. The fuel door switch works but the trunk release switch does not (no sound, haven't checked wires yet).
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