Passat (B6) :: 3.6L Engine Idling At 950 - 1000 RPM And Car Surge Forward
Jun 16, 2007
Earlier this winter and last year, the forum had discussed the occasional fast idle in the 3.6L. Symptoms include the engine idling at 950-1000 RPM and the car feeling like it wants to surge forward. I had the problem twice during heavy snowstorms in February, but nothing really since...until this past week.
The weather here in Chicago has been in the early 90s and I've had the AC cranked. At the same point, I've had the fast idle event occur at least 5-6 times in the past week. Almost every time it has occurred while moving in very heavy traffic. Have others seen something similar in very hot weather?
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I have a 2001 passat sedan with a vr6 auto. The problem I am having is when idling it will start to surge and sometimes cut off. The car will sit and idle fine and then just start surging and then idle fine again.
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My 2000 Lexus GS 300 has done the following three times when I've been inching forward by lightening on the brake (not touching the gas pedal): slight engine surge moves the car forward and the brakes don't work. I have to throw the car into "Park" to stop. Had it checked each time (twice by my local shop and once by the dealer) and they find nothing amiss. These three incidents have occurred several weeks apart, during cold weather. My car has 98,000 miles on it and has been very well maintained.
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My 09 Tacoma 91000 miles- symptom: when idling with foot on the brake, on occasion, experiences engine pause/subtle forward sensation; otherwise drives superb. Service shop said the issue is remedied by replacing the drive shaft thereby switching out the "yoke" which is the source of the problem. Shop said this is a common problem with 09 Tacomas. Does this need immediate repair or can I drive safely?
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I have a Gen III Prius 2010 with about 50k on it. I've noticed over the past month that when the ICE shuts down at a stoplight, the car will surge forward a bit. If my foot isn't on the brake really hard, it will translate to the car actually moving forward until the ICE is totally off. If my foot is on the brake hard, you can feel it push against the brakes, and then the car settles back in place. It doesn't happen every time, so it still takes me by surprise.
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I recently noticed my 93 accord idling between 1,000 and 2,000 going up then down up and down when the car is in park but when i shift it into gear the car idle goes down to 700 but after driving i shift the car back into park the idle goes back up 1,800 rpm levels off than comes down to 1,000 rpm and i know this idle is too high because it cause my fans to come on sooner and more frequent its like im on the gas when I am not.
I did some research and came back fit fast idle thermo valve so I changed this valve twice and it still does the same thing i have no coolant leaks and no intake work was done so I don't think its a vacuum leak cause it only does erratic idle in park but in gear its fine so this is a puzzling one also I changed thermostat and flushed cooling system followed by a bleed of all the air out of the cooling system now on youtube they call this a hunting idle and is very notorious on 90-93 accords also when I drive down the road and let off the gas it lets of this high pitched whining noise sounds like a valve is getting stuck open.
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I don't know if this is related, but my car has not shifted as well as it did before I gave it my oil change. The car only has 3K miles, new Hyundai oil filter, and Mobil 1 Synthetic 5w-20.
It's not a major dip in performance, but enough for me to know its different. One example is when I come to a stop, the car seems to surge forward a little bit. Another is that is shifts hard from time to time when I give it gas.
Going uphill, it just doesn't have the power like it did. Also, it feels that it's not in the right gear..like 5th or 6th gear. It's hard to describe the symptoms. The weird part is that the MPG is the higher than normal.
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I had the tranny/transfer case flash done sometime ago, which yielded smoother driving in "D" mode. However, I noticed that when braking in "S" mode, the downshifts actually cause the car to surge forward strongly. It's disconcerting enough that I now avoid driving in "S" mode unless I need to merge into traffic quickly; even then, I prefer shifting manually instead.
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Car started idling weird last night. Drops to about 500 then up to 1000, thrn down again. CEL has been on for over a month but has not affected driving. Engine shakes and doesn't sound normal. I was told by mechanic CEL was caused by a vacuum leak, but he didn't have the smoke machine to pinpoint the leak. That was over a month ago and I haven't had the chance to go back. What are the first things I could check for besides the vacuum leak?
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2002 Chevy Monte Carlo SS 6cyl 100,000 miles
Symptom, loss of horse power (from a stop and going uphill), surge or lunge forward when accelerating (misfire?), rough idle (occasional knock). Maintenance, regularly change all filters and fluids, recently had the m.a.f cleaned and changed air filter, spark plugs and wires, oil.
There have been times in the past year or so when the car would crank but not start. Especially when the car was hot. Wait a couple minutes and it would start. Also a couple of times the car would shake fairly hard when started, get up to speed and it was fine.
I have had people tell me anything from a clogged catalytic converter to bad fuel injectors or fuel pump.
Scanned the car last week. No codes showed up. Never had a Check Engine Light.
I forgot to mention that every once and a while the car will jerk when accelerating. I have a coworker who said his truck started to jerk forward and later would not start at all. Our mechanic said it was the fuel pump. I I will see what that does for him.
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I have had very few automatic transmissions in my lifetime, so I know less than I suppose I should. This one's a C-6. When I start the engine in the morning, shifter in the Park position, I often feel a very slight, very short tendency for the van to try to move forward. Why?
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My car is idling at 1000 rpm for a few minutes when I start it, why? Just started a few days ago...
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I've had my 2010 Prius II for less than a month and am not particularly happy with it. I've experienced a slight surge forward when braking on uneven pavement at low speeds at least 4-5 times in 900 miles. This isn't something I can duplicate on demand. When I took it in to the dealer after the first time and asked if the ABS fix had been made to it, they told me my car wasn't part of the "campaign" (aka recall) because it was manufactured in March and the ABS problem had been solved by then. However, it sounds exactly like the problem people were discussing in Jan/Feb.
Once when I put it in reverse in a parking lot it lurched backward (my foot was on the brake) suddenly -- not far, but it was an alarming sensation. It also has a high pitched, barely audible whine when moving (can't hear it if I put on the radio). The mechanic said that was the normal sound of the battery, but I don't remember it from other cars I test drove. Is it normal?
I'm keeping an eye on the dome lights every time I park because I found them on one night (they'd probably never shut off after I parked the car during daylight hours) -- it could have been that the light was switched to "on" rather than "door," but now I'm paranoid and constantly check to make sure they're off when they're supposed to be, for fear of wearing down that little 12 v battery. Not fun.
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I have a 2006 2.0 tdi 170 dpf passat. Some times the revs rise to 900-1000 rpm and the engine sounds more noisy than normal. Then the revs go back to normal at 800 rmp and the engine sounds normal, What can be the cause of this??
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My 2002 Buick Lesabre has about 160,000 miles on it I keep up with maintenance regular oil changes and what not. Today when I am driving to work and right as I get on the freeway my car starts lurching forward and slowing down repeatedly so I pull over turn the car off look under the hood everything looks normal to me. I wait a bit start the car up and the lights on my panel go from the dimmest they can be to blinding bright and I could not adjust the brightness at all. Any way the car drove fine the rest of the way but the lights were bright as can be the whole way there. What could be causing this? Bad battery?
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I've been dealing with this for some time now because it hasn't seemed to affect my performance when I am getting on it, but when I am at idle the rpms will surge ever so slightly and i can watch the needle on my boost gauge bouncing up and down. i have a WINtake on the car and it started ever since i installed that. I am wondering what this could be. I've already taken the whole intake out and reinstalled thinking i had a leak somewhere. even tried swapping my maf with a known good one off the lot on a brand new R.
I read somewhere that someone had their maf in backwards. could this be the issue? I don't have any power loss that I am aware of. in fact, if its down on power now, i would have a hard time believing that it could be much faster with what i have done to it. this idle surge will get worse when i have my ac on also. someone make me realize that I am missing something stupid and simple here so i can have a normal idle again. I am half tempted to put my stock intake back on to see but i no longer have the turbo inlet plastic pipe to test it with.
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Noticed this morning I was idling at 1000 rpms and was wondering if that's normal or a little high?
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I have a 2009 Corolla and anytime the car is idling and it drops below 1000 RPMS there is an extremely annoying ticking sound, it goes away when I put it in Neutral or the AC is on because it idles higher.
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I just bought a 2006 Passat 2.0T FSI about 3 weeks ago, love the car so far. My only concern is within the last week i have started to have a little bit of a lack of power. The engine will give a surge of power and then kind of slow down for a minute then a surge of power and then slow down. Also the other day i started it up and it had a little bit of a rough idle until it warmed up, don't know if these are related. Has right around 91K miles right now.
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I have a 1999 toyota tacoma 70,000/mi. While idling, at random intervals, truck surges forward. Have to stay on the brake. Cannot drive in winter. Took to Toyota dealer and other mechanics... described problem and that A/C seems to be on all the time. No one has been able to fix. My brother disconnected the A/C and surging has stopped, but I need a better fix that will allow my using AC.
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Just noticed the other day the Passat was idling significantly rougher than usual, most of the time it's smooth as butter but not so much lately. It's not rough like a bad misfire, just not very smooth anymore. This could be indicative of the dreaded oil-pump bolt failure rearing it's ugly head (finally)?
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