Passat (B6) :: Power Loss When Put The Gas Pedal To The Floor
Oct 24, 2011
Ok, so I have my VR6, and I have a 2.0T as well. My 2.0T feels MUCH faster than my VR6, and I don't think it's normal. What's happening is when I put the gas pedal to the floor, the car almost acts like it wants to die, the RPM's go all the way down, and there is complete power loss for a few seconds. Then all of a sudden, all the power is there at once. Weird, right? For some reason I keep thinking it's related to the transmission. It almost feels like the car has no idea what gear to be in and doesn't know to downshift or something.
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Took my 850 Turbo out on the freeway today, and when I put the pedal to the floor on the onramp there was a very disconcerting loss of power just as the turbo was really kicking in. No issue under mild to medium boost, but when pushed hard there is a short loss of power/hesitation, almost like a backfire, then boosts again, then the same power loss until I back off on the gas. Cannot get full boost without this happening.
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So a few days ago the family and I were on a road trip. After driving for close to three hours we ran into a problem. We were doing about 75, which is about 3000 rpms with the 4.6L, When we dropped from 3k to about 400 and started to lose speed. I pushed the gas peddle all the way to the floor and no response at all. I pulled over and it had a very rough and choppy idle and it wanted to die. It eventually did. I checked all fuses with nothing found and i even hit the fuel pump shutoff reset. It started back up no problem and we got about 5 miles before it the exact same thing. Idle at about 400 rpms and no throttle response at all.
I shut it off and called a tow truck. It started up and they drove it onto the back of the tow truck and off at the local mechanic. They spent 2 whole days trying to diagnose it and even drove it for 4 hours straight, no issues. They pressure checked every system they could and tested every sensor they could. They could not find a single thing wrong with it. I drove it home 3 hours away with no issues. I got home and let it sit for about 10 minutes before I had to leave. I didn't make it more than 2 miles before the same issue popped up. I pulled over. Shut it off for 15 minutes and it started right up and drove home.
It threw 4 codes.
1. Pressure control solenoid malfunction
2. Fuel pump Primary circuit malfunction
3. Gear 3 ratio incorrect
4. Gear 4 Ratio incorrect
I've had 2 mechanics tell me its a PCM issue.
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Ever since I took my 18" wheels off for the winter and put the stock VW 16's with snow tires I have on multiple occasions almost rear ended the car in front of me when I experienced what seemed like a loss of brake pressure. The brake pedal did not feel spongy or anything but often in this situation the abs brakes seem to kick in for no reason. I feel a slight pulsation in the brake pedal which I can only assume is an activation of abs. I'm wondering if this slight pulsation (1 second duration ) is causing my brakes to be less effective. The pavement has been completely dry and I was not traveling fast enough, nor pressing the brakes hard enough to cause the tires to lock and trip the abs.
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I'm fairly certain I'm leaking coolant. Below will be a pic of the reservoir as well as where it appears to be coming from. I did a search and saw it could possibly be a flange that may have failed? Other than that there wasn't much useful information. The screw in the picture was the only thing wet, and was directly above the small puddle on the garage floor. As you can see by the pic the coolant is visibly lower than last time I checked.
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My B6 purchased exactly three weeks ago has had a soft brake pedal since day one. By "soft," I mean that when parked with the engine running and applying moderate pedal pressure, the brake pedal provides some resistance but sinks to the floor. If I pump it up a few times, it temporarily gets much firmer, but eventually sinks to the floor again after a few seconds. Now the car so far has never failed to actually stop, and it can get into the ABS. But during an abrupt (okay...panic) stop last week, it did go to the floor while the car was still moving. That's when I decided that was enough and took it back to be serviced.
My expectation was that there was just a small amount of air in a line somewhere, and that they could bleed the system and fix it. That was my experience with my B5: it was very sensitive to the least little bit of air, and if it wasn't thoroughly bled after brake service the pedal often got mushy and could find the floor. But bleeding them always get the pedal back to normal. So the service advisor said that he "had the service manager drive [my car] and compare it to a new Passat [on the lot] and talked to "Quality Tech. Manager to confirm." And the confirmation was that my brake system is "working as designed." In short, they say the brakes are working properly and there is nothing to fix. So I have now picked up the car and it still does the same thing.
Now I can (and will) bleed the brakes on my own over the weekend. But I would like feedback from others as to whether or not their brake pedals regularly see the floor. I just can't see this being the way any hydraulic brake system should work..
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Facts: 1999 Vw passat 1.8t
1 year ago, clutch pedal would not come up off the floor, no life in the pedal.
Problem: Clutch master cylinder, replaced.
6 months ago, clutch finally went bad. Took car to clutch shop, replaced clutch kit(found out after i payed that they only turned the dual-mass flywheel... ). Get car from clutch shop, the clutch pedal came up only 2-3 inches off the floor by itself but you could lift the pedal with your hand or foot, and it would come back up all the way, but it was life-less. It was not pulling fluid in. It was catching extremely low. I called the shop, they said that it was just because it was a new clutch and it would get better. I didn't believe them.
Two days ago, I got into my car and couldn't get it into gear. Clutch pedal would go down with the same amount of force as before. Took it back to the clutch shop and explained the history with the clutch master and then them doing the clutch kit. They said it wasn't bleeding properly and they're not sure if its going to have problems again. Car is working now, but I am concerned that it will have similar problems again.
The tech who fixed it said he pumped fluid into it extremely hard, and that's what made the pedal come up all the way (no longer stops 2 inches off the floor) and its going into gear just fine now. What the problem might have been? Block in the hydraulic lines? If this is the case, does forcing fluid through it fix it?
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My clutch pedal went all the way to the floor. The engine was missing first and then that problem happened with the clutch. I had the car towed to my business, I checked it the other day and the pedal was up. The clutch still doesn't engage.
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Last night I was driving home and decided to show off at a light. I punched it pretty hard, but it wasn't anything outrageous.. anyway, as soon as I shifted to second, my clutch pedal gave out and dropped to the floor without resistance. I coasted it to a gas station, luckily.. When I lifted my foot the pedal rose back slowly. I tried pumping the pedal, didn't work. I looked for leaks, but none were found. I turned it off, put it in first and tried starting it, and it turned over and jumped/jerked forward, a lot like it did right when I shifted into second and it went out. So I'm assuming that its not the entire clutch cause it wouldn't have engaged the engine. It's not a leak. pumping it didn't work so it's can't be a pressure issue.. what is going on? is it my master cylinder, or maybe my slave?
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In the first instance of this problem, my brake pedal was stuck to the floor. By pumping it a few times, it gradually released and rose to the proper level. Brakes then seemed to work fine for a couple of weeks, until I reversed out of a parking space, but could not brake the car when I shifted into drive. I pushed the brake pedal to the floor, but could not stop until I ran over two large boulders that, stopped the car short of a big tree.
My mechanic doesn't know exactly what went wrong, but is replacing the brake cylinder. I fervently hope that fixes the problem! What could it be?
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1998 Passat 1.8T FWD. My clutch pedal is stuck to the floor and wont spring back up. I can't seem to find the little tank to check the clutch fluid. I have heard the it uses the same tank as the brake lines do, but the tank that holds the brake fluid is full. Can it be the slave cylinder is gone? or just got a air pocket in the line?
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On my way into work this morning I had one of those everybody needs to stop NOW moments. Hit the brakes hard, really hard with wheels chirping and all, after i got mostly slowed down the pedal gave way and went to the floor. I let up and pushed again and they were fine, but at that point I didn't need to hit them that hard again. The rest of the way in they worked fine braking normally, and before hand as well.
I'm thinking the master cylinder is going bad. Any tips on diagnosing for sure?
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Ever since I've had this truck my parking brake has acted like this. My buddy has an '03 and his acts the same, but I figured I'd ask the question.
9 times out of 10 to set the parking brake, the pedal goes almost to the floor and doesn't seem like it really does anything. The other 1 out of 10 it goes half way and feels like it actually sets. Is this normal?
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What is failing. I have a 2000 F350 PSD with 116k miles. When I bought the truck last year, I noticed that the clutch pedal would squeak while it was coming off the floor. It doesn't happen when the engine is cold. I need to drive it about 30 min before it starts to happen. On longer trips, several hours, the squeaking is louder and the pedal gets very stiff. When I stop for fuel, I've come close to stalling when coming out of 1st gear. I can push the pedal to the floor, but on the way up, the pedal squeaks, and then once I reach a certain point, say 3-4 inches off the floor, the pedal looses all freeplay. The best way for me to describe it is the pedal travels up faster than it normally does when it's cold, and if I don't compensate with more throttle at that point, it will stall.
I've learned a lot by reading this forum for the past year, but I don't know the first thing about how to diagnose problems like this. I've taken it to 2 mechanics for test rides -- one thinks the clutch is fine and thinks the problem is the slave cylinder or a broken bushing in the pedal.
The other shop is also a small independent shop, but they specialize exclusively in Ford trucks, so I thought they would be more knowledgeable. But now I'm wondering if they could sense my ignorance and are taking advantage of the situation. They also took it for a drive, but they think the slave cylinder is fine and that the clutch needs to be replaced. I questioned him about the slave, and he pulled it to look at it, and asked me to push the pedal slowly while he was under the truck. I still had a little resistance and a faint squeak even in this situation. But he said the hydraulics are so simple that he felt we could rule that out. I can't remember exactly what he said, but I think he believes one of the springs in the clutch plate has failed. I just know they are suggesting a new clutch and they want to machine the flywheel to original specs.
I thought the leading symptom of a failing clutch was slippage under a load. So under strain, I would expect my engine to race occasionally, like I'm in neutral. But I've NEVER experienced anything remotely like this, even when driving hard in the hills pulling my travel trailer.
I know something is wrong, but based on my limited knowledge, I'm not sure what. It's getting a little harder for me to move the shifter into 1st and reverse, but once it's there it's fine. I've never experienced any racing or slippage in any gear. The one definite symptom I have is that squeaky pedal that when driven for a couple of hours, gets so stiff that it can cause near stall outs. With those symptoms, what do you think is going wrong?
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While driving to work this morning driving about 25 MPH and increasing speed gradually in traffic the lane I was traveling came to a sudden stop, I slammed on the brakes, ABS took over and I steered around the stopped lane of traffic with no issue. Here comes the problem, I never stopped rolling and traffic was coming up behind me in the lane that I just went in to and I stepped on the gas pedal and got nothing, truck was running, no lights or warnings just a dead gas pedal. This only lasted maybe 5 seconds and then it went but it was totally dead no matter how hard I stepped on the gas and vehicles were beeping at me from behind me. It finally went (5 seconds seems awful long when cars are approaching fast from behind) and it drove fine from there on. I guess I plan on trying to recreate this issue but thought maybe there is something with these trucks that caused this that I don't know about?
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The problem occurs when you hit bumps while braking, or if you get on the brakes to hard. It seems like the brakes lose pressure entirely and the pedal goes to the floor. It kicks back in when the ground smooths out, or if you are braking hard it slowly grabs again. At first i thought it was sliding, but it definitely is not. The truck appeared to be equipped with abs but the previous owner seems to have cut the abs wire/sensor at the hub. Another thought i had is maybe the brakes need to be bled and have fresh fluid put in them, I have not tried this yet (Plan to this weekend along with a dozen other things). Its rather scary when it happens. but i didnt think much of it until i nearly rear ended someone..with my younger brother in the car. Now i need to fix this asap.
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Trying to track down a vibration issue. Not steering. But, idling in gear and driving. I feel the vibration through the go pedal and floor board and seat on driver side.
Checked obvious points. Down pipe, complete exhaust system. Motor mounts, tranny mounts and steering.
Got to be some other spot I'm missing. Checked driveshafts. Everything seems OK.
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I just bought a 99 f250 super duty with 6 speed and it has clutch problem the clutch pedal goes about 1/3 of way down then drops to the floor and stays. I pulled slave cylinder and it has just as much resistance as a new one. my other thought was a spring internally in transmission. any other thoughts or do I just need to replace the clutch?
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I've been noticing severe power loss lately . I know the 12 camry i4 has a bit of lag when acceleration but it's a bit worse now . I do have weapon r header , injen intake and magna flow muffler. I've cleaned the intake filter but sometimes the car feels as though it doesn't want to go then it does. I have to push the pedal down hard . I also have res delete.
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This first occurred about 2 weeks ago, I had a complete loss of power when stepping on the gas pedal. The engine did not rev or anything, completely unresponsive and the car was just gliding. I've had loss of battery power in the past where the engine was still going, just straining hard, but this was not like it as now the engine was completely not responding either.
I can't recall if it was going up or downhill -- it was around time the incline changed in a freeway ramp that began up and then moves down. At first I thought it was me accidentally putting it on neutral as I have a habit of resting my hand on the shift knob, but putting it in/out of drive did not work initially but after the 2nd try everything was back to normal so I thought nothing of it afterwards.
But if happened again this morning, again on a hill transition, either right before the top of a hill or right as I was coming down it. This time I know I did not have my hand on the shift knob. It resolved itself about the same, I had to shift in/out of drive a few times and it worked fine again a few seconds later.
I've been good with maintenance and changing out everything that they recommended, and also did the IMA battery recall upgrade.
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I am having issues with loss of power, feels like engine is not getting air. Wondering if their are any fixes or tests I could attempt myself. Car facts:
2007 b6 2.0t .... 107,xxx miles
Have not cleaned intake manifold yet - on my to do list
P-flo intake (thinking of changing/ changing filter
Can follower/timing belt serviced recently
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