Golf IV / Jetta IV :: Computer Show Speed With 20km/h Higher Than Real Speed?
is locking in 4m but is too high, suppose to be ~2200rpm.When I checked with vagcom the speed shown on computer show a speed with 20km/h higher than the real speed (shown at speedometer)
View 14 RepliesGolf IV / Jetta IV :: 2002 2.0L 5 Speed - Intermittent Crank No Start
I have a 2002 2.0L 5spd Jetta that has an intermittent crank no start issue. The car has about 140k miles on it. The car will crank, but will not always start. It seems to start about 8/10 times. During the cranking, there is a rough noise coming from the starter area. More on this noise later.
When the car starts, no codes are thrown. When it refuses to start, the following codes show up:
P0261 Cylinder I Injector Circuit Low
P0267 Cylinder 2 Injector Circuit Low
P0270 Cylinder 3 Injector Circuit Low
P0264 Cylinder 4 Injector Circuit Low
P0445 Evaporative Emission Control System Purge Control Valve Circuit Shorted
P0037 HO2S Heater Control Circuit Low B1S2
P0418 Secondary Air Injection System Relay "A" Circuit Malfunction
P0420 Catalyst System Efficiency Below Threshold (I don't think this is related to the intermittent starting issues)
I've read up on these codes, and there are instances of other people getting these codes as well, but unfortunately, I haven't found any "smoking gun" that's the root cause to solve the issue. What I've tried, chronological order; none of these solved the problem:
Checking for spark. The spark plugs are new (within 2 months), but I removed spark plug and checked for spark.
Check fuel system: I removed the fuel line to the engine and drained it to a jug. I saw fuel flow intermittently when I keyed on the car. (Should it flow continuously?)Replaced the fuel filterSwapped fuel relay 409Checked wires near relays for obvious signs of damage (admittedly maybe I missed something here)Swapped coil pack. The coil pack was replaced in April, but I put a different one on, to no avail.
The spark plug wires were replaced at the same time as the coil pack.Starter
Thought fixing the noise might fix the starting issue. The noise from the starter is a grinding noise that occurs during the cranking process (not after, as is a common problem with these Jettas. It's NOT this noise: [URL] .... In any case, I tried the fix for the above noise by removing the starter and regreasing the inside. That didn't work and the noise and the intermittent starting issues are still here.Finally took the starter to Advance Auto Parts, had it tested, and was told it was good.
I think I have two issues that may or may not be related- the intermittent starting issues and the noise issue. They started happening at close to the same time.
Golf IV / Jetta IV :: 2002 VW 2.0 - Loss Of Power While Driving At Normal Highway Speed
Ok, so I was driving normal highway speeds and all of a sudden, I realize a major drop in power. I pull over and restart it and it changes nothing. Now when I floor it, it takes 20-30 seconds to get to 90K.
I checked the air filter... Nothing. Used a code reader... Nothing. Then I decided to pressure test the cylinders... Nothing, except now the check engine light is on.
The Ol Dub is still drivable, but it is extremely slow and rough at idle. I am thinking it might be a MAF or fuel filter.
Golf IV / Jetta IV :: 2.0 Momentarily Stalling While At Speed
MKIV 1.8T. Basically the engine turns itself off for 2-5 seconds while driving (quite dangerous!!), then immediately starts back up. For that 2-5 seconds the car is coasting and slowing down. Gas pedal does nothing, but the once the engine comes back on it was as if nothing happened. No CELs or anything else to indicate something is wrong.
The problem appears to happen like most others, with gas 1/4 tank or less (sometime 1/3 tank or less), cruising between 60-75 mph. I've already replaced all spark plugs, new plug wires, air filter, fuel filter, and the Crank Position sensor. I haven't yet changed or cleaned the fuel pump, gas tank or MAF ...
Golf IV / Jetta IV :: ASR Light Comes On If Speed Up Onto The Highway
If i speed onto the highway from 3rd gear it turns on ASR light and wont turn off until i turn car off. I just replaced MAF month or so ago with a cheap ebay one. If that has anything to do with it. 2003 MkIV 1.8T ...
View 7 RepliesGolf IV / Jetta IV :: 1.8 / 5 Speed Manual - First Gear Won't Turn On
I have a 1.8 Jetta and I realized yesterday that my first gear won't turn on what could be the problem..
View 5 RepliesGolf IV / Jetta IV :: Low Speed Cooling Fan Won't Run When Switch Is Bypassed
I've been troubleshooting my AC for the past couple of months -- 2000 GLX -- and have narrowed it down. I have taken the connector off of the Radiator Fan switch and followed the Bently procedure to start the fans. The high speed will run with the ignition switch ON, but I can't get the low speed to operate. The Bentley manual said if the low speed doesn't run, to use the electrical diagram to find the problem. I need to know where the signal for the low speed fan comes from. I have ruled out fuses, etc.....
View 15 RepliesGolf IV / Jetta IV :: 1.8T 5 Speed Manual Transmission Won't Go Into 1st Gear
2004 Jetta 1.8T w/5 speed manual transmission. Bought the car this way, mostly for a parts car, but everything else runs and drives good, so if it wasn't for this issue it would be a decent driver.
Won't/can't select first gear. Seems like there is no "spot" for first, or that the shift mechanism has no where to go., locked out. All the rest of the gear selections work perfectly. Tried the cable adjust ritual, but it was fine-as I suspected. The shift assembly works/moves perfectly from the tranny end and the shift lever end. Not a synchro, it won't go in stopped, moving, running or shut off.
So, what's the probable best guess or best way to come to a diagnosis? Shift tower parts broken somewhere, or something like a shifting fork bent broken? Seems like if it was internal there would be other gear selections that would be affected. Any links to some diagrams?
Golf IV / Jetta IV :: How To Replace Vehicle Speed Sensor (VSS)
2002 Jetta 2.0L...
The Haynes Manual tells you to lift the car up and un-mount the engine mount on the drivers side of the transaxil to get access to the VSS underneath the vehicle, but you can do it from the top of the engine!
1. Take out your Air filter box for easier access
2. My VSS was covered by a metallic heat pouch with snaps. (not mentioned in Haynes Manual)
3. I got Needle nose pliers to wedge in the small area to unscrew the bottom half of the VSS. It is a small area to get your hand in, but with the needle pliers was actually pretty easy.
4. Then get something small enough to release the clip for the top plug. I used my screwdriver.
5. Screw in your new VSS and plug the top cable back, then put your air filter back in place.
If you look at the pictures I took, you can see the VSS and the silver pouch I mentioned. I had a lot of trouble finding the location of the VSS with no real good pictures or explanations online. Note these pictures were taken from the drivers side, which the empty space is where the air filter was and on the right you can see the battery.
Golf/GTI VI :: CEL Came On And Then Car Started To Run Real Rough
The Basics: I have a 2011 GTI with 44k on it. First GTI, I have had it for a few months...
I was leaving for work yesterday and the CEL came on and then it started to run real rough. I pulled the codes with a auto zone scanner and I got these:
P2015 - sensor 1 bank CKT range/perf
P2279- air intake leak
P0300 - multiple misfires
P0301-P0304 cylinder 1-4 misfire
I did a bit of research on here and it sounded like a PCV valve. So I picked one up and I installed it. Problem did not go away. I then read that maybe pulling the battery may clear the codes... It did not. Now I have a lot more lights on.
Golf IV / Jetta IV :: 2005 GLI 1.8T 6 Speed Engine Shakes At Idle
I drive a 2005 Jetta GLI 1.8T 6speed which in South Africa is called 1.8T-R. The car shakes at idle and after driving for a while it cuts off power, when restarting it takes some time cranking before starting. After starting the EPC light comes on and the rev goes up to almost 2000rpm. It runs on an AUQ Engine.
View 1 RepliesGolf IV / Jetta IV :: 2005 TDI - ABS Engaging During Slow Speed Braking
Mk4 2005 TDI 190,00 KM
Background: Purchased this car couple months ago. Did a bunch of maintenance, including rear pads/rotors, fronts still good. Also decide to bleed the system while I had the car on jacks. Followed Bentley procedure as I have previously, using a pressure bleeder making sure to stay at 12 psi and kept the reservoir topped up at all times. First I did the clutch slave, brakes and last I did VAG com procedure to bleed the ABS unit. Upon completion pedal felt good and I took it for drive ..
Brakes worked fine under normal braking force but when the car was slowing down and coasting to a stop with my foot on the brake (light pressure) the ABS engaged briefly(speed around 10-15km /h) right before the car came to a stop. Assumed maybe air in the system so re-bleed the ABS pump again .. Nothing same ABS kicks in right before stopping .. Cleaned all speed sensors and rings .. Nothing, still happening.
Recap:
-ABS does not engage under regular braking force, brakes work fine.
-ABS engages under light braking pressure right before complete stop. (ie parking car or pulling into a drive way)
So my question is, is it possible an ABS sensor out of the 4 is causing this? How about the brake switch? I know that on older VWs used to be 2 pin but this one is 4. Is it possible there is ABS pump problem? Air still in the system? Master cylinder?
Golf IV / Jetta IV :: Hesitation While Driving At Consistent Speed In One Gear
Recently I switched from Revo software with 440cc injectors to Unitronic with Siemens 630cc injectors. After swapping, the car has developed a hesitation issue. It only happens when driving a consistent speed in one gear, for example going 45 in 5th, the car will feel jumpy and hesitate to accelerate with a seeming loss of power. Replaced spark plugs with new ones and the problem still persists. Problem never happened with old software and injectors.
View 2 RepliesGolf IV / Jetta IV :: 2005 TDI Has Little Acceleration - At 3k Rpm It Doesn't Pick Up Speed Anymore
For the past month or so my 05 TDI Jetta has been having some acceleration issues. It starts good and when i start driving it goes ok (but not as good as it should) but when the car gets close to 3k rpm it doesn't pick up speed anymore. I recently had it taken into a shop where they fixed other issues but they didn't fix this one. also sometimes it will accelerate faster than it did before it had issues but then it just stops picking up seed. I have looked up this issue but haven't found a cause for it.
View 8 RepliesGolf IV / Jetta IV :: VR6 5 Speed - Clanking Noise When Letting Clutch Out In Gear
The car runs fine clutch has pressure and everything. I can idle with the clutch pressed down and put into reverse and every gear BUT if I put it in a gear and start to let the clutch out I can hear a clanking or something flying around in there and it doesn't really want to go anywhere and I don't want to really let the clutch all the way out in gear or let it out for too long and screw anything else up worse..
View 2 RepliesGolf IV / Jetta IV :: Engine Sounded Like There Was A Hole In Exhaust At Highway Speed
I was driving to work last night and too many things went wrong simultaneously leaving my MK4 stranded.
2000 Jetta 2.0
185,000
Automatic
No check engine lights or warnings
-The engine sounded like there was a hole in the exhaust at highway speed. There wasn't because it's a new system
-Low coolant light came on. The flange connector at the firewall was torn off resulting in a stream of coolant pouring out
-It was dark but the engine almost seemed cockeyed by a degree or two
-Upon parking, the motor. sounded "clunky". Driving forward seemed OK. When shifting into reverse there was a pronounced clunk and the drivetrain wasn't happy.
-I turned the ignition off and that was the last time the car started. It turns over now but will not fire up. The video I attached is my last attempt at starting it before giving up.
My car is my job and I'm at a total loss on how to proceed???
Golf IV R32 :: Rear Hatch Won't Opening From Key - How To Get Real Panel Off
Will rear hatch not open with switch or key? How do you get the rear panel off with the hatch closed? Seen a few threads about this problem but no real details on how to pop it off.
View 6 RepliesGolf IV / Jetta IV :: Automatic Shifting - Code P0722 Output Speed Sensor
I just recently purchased my first mk4 golf 2.0 after having a mk3 jetta vr6 for two years. I've been having problems with the car shifting (automatic) i put a code reader on it and came up with p0722 output speed sensor which explains why it sometimes shifts at 4500. My two questions are where is the output speed sensor located? and what is a normal shifting range for properly running automatics?
View 2 RepliesGolf IV / Jetta IV :: Spring-clicking Like Noise When Make A Sharp Right Turn At Low Speed
So the Jetta developed a new noise lately that sounds just like what can be head on this video.
The spring-clicking kinda noise only happens when i make a sharp right turn at low speed and seems to be coming from the driver's side. So i though bad outer cv joint.
Well, I put on a brand new OEM unit last night and noise is still there.