Passat (B6) :: High And Bouncing Idle In Neutral
Oct 6, 2009
Came to a stop at a loooooooong light the other afternoon. I popped the AT into neutral, and the engine idle rose to around 2000 RPM, dropped to about 1500, then started cycling in that range. CEL also showed up.
Now, whenever the transmission is in either P or N, if I blip the throttle to bring the RPMs into that range (1500-2000), it stays in that range and cycles up to 2000, drops to 1500, wash, rinse, repeat. Blipping the throttle above 2000 does not change this behavior... as soon as the RPMs drop back to 1500, zoom it goes, right back to 2000.
View 4 Replies
Advertisement
'97 Taurus GL Wagon 197k: Some of this stuff has been going on for some time now (several months ... maybe even a year).
1.) Driving Itself:
Car seems to drive itself on my way home from work which is a long, flat road in the 45-55 mph speed range. Once I get into this range, I can take my foot off the gas pedal and the car pretty much maintains speed until I get to an upgrade. I've even noticed times when I'm not pressing the pedal but the car is slightly speeding up to the point where I have to keep tapping the brake to keep from getting too close to the car in front of me.
2.) Stalling/High Idle:
Sometimes when I come to a less than smooth stop at a light - say, a yellow light that quickly turns red and I have to stop quicker than I'd want, the car will stall out. This has only happened a couple of times in the last 6 months, but it had never done this at all up to this point, so it's a new phenomena. Otherwise, the idle is usually at 600 rpm (except recently I've been seeing high idles of 2000 rpm every so often, which is really weird!!). Also, it seems like if I park the car on an incline, the engine will turn over many more times trying to "catch" and start - and the whole start-up sequence just feels weak - like it's not getting enough gas.
3.) Tach Bouncing:
This one's got me the most concerned because I think it's the most serious (and potentially the most costly to fix). I completely transfused the tranny fluid a few months ago as a possible solution, by the way, so the fluid (Dexron Mercon IV) is fresh. At about 1500 rpm on the tach, the tach sometimes starts bouncing up and down on the scale and I can feel a metallic engagement/disengagement cycle. If I get above or below this area on the tach, however, no problem. Also, taking off from a standstill -even though I accelerate very slowly and smoothly because I KNOW the tranny is "soft" and will 'slip and slap' if I don't - I'm recently starting to feel a very very brief grinding-like slippage feeling that does not hinder acceleration much at all, but feels very unsettling. This is a new feeling and it only happens every now and then (so far).
You're gonna say the tranny's on its way out, right?
View 2 Replies
A question during the show this week (1/22/2011) was whether it used more gasoline to idle in gear or in neutral with an automatic transmission. The answer was it makes little difference. I contend the engine uses more fuel idling in neutral. The reason is the increased level of partial vacuum within the intake manifold means more air and fuel will be drawn into the engine. When the vehicle is in gear, the engine idles slower, less vacuum, less fuel used.
View 8 Replies
I'm trying to find out what I need to check or replace to get my 2000 Excursion to idle at normal rpm's in park and neutral.
View 11 Replies
I have a '98 F150 4.2l with 230k miles on it. A couple of days ago when starting, I noticed that the engine kept racing instead of idling down like it normally does and the weather here in Arkansas has approached the 80 degree mark. The engine also doesn't idle down when shifting (I have a manual tranny). Where to start? I don't have any codes stored other than two for bank 1 and bank 2 running lean but they popped up many miles ago. I'm thinking either a vacuum leak or throttle control. I checked the operation of the cable and the throttle valve and they appear to be fine. Maybe the idle air control?
View 4 Replies
I have a 2002 Monte Carlo what recently had a new radiator, thermostat, intake manifold gaskets replaced. I was spewing coolant everywhere. Since the repairs with all new OEM parts, I still get the 'Hot Coolant Temp" warning on my dash. The temp gauge is pinned at 260 but minutes later drastically drop to under half way after which it seems to balance out at slightly under half way.
I also see the 'Low Coolant" as well even though I am full. All of this occurring while driving. I checked the oil and underneath the oil cap. No frothy or milkiness. Exhaust seems ok, no white smoke. The heat inside my car when i run it seems to go from warm to cold and back again. I'm praying it's not a cracked heard or blown head gaskets.
View 4 Replies
A few days ago I changed my oil and decided to throw in a can of sea foam with a fresh tank of gas. I live literally 100ft from a gas station so I poured the bottle of sea foam in my tank while on empty and then immediately drove over and filled up my car. Right after that my car was bouncing from 500-600 rpms consistently at idle...I gathered it did not mix well and was running mainly on the sea foam. After a day or so of really driving the car that issue had stopped and it was idling/driving normal.
Fast forward a few days to today and all of a sudden my CEL comes on. Also, when I come to a stop after a long drive my car decides to jump up to a 1200rpm idle. I let it sit there for a good 2-3 minutes and it will not come down. I've noticed before that if I blip the throttle a tiny bit it will get it to drop to its normal idle, but that is not working for this. Do you think all of this originates from running that sea foam or could it be a completely different issue? I just turned 62k miles and haven't had a single problem before this. It wont be until later this week when I can plug it in and check to see what codes it is throwing..
View 3 Replies
I got a mkv R32 with 57k miles (DSG transmission) on it and the past few weeks ive been having some crazy issues. My car shuts off once in awhile when I come to a stop in traffic or at red lights. Last night it happen again I came to a red light and the car shut off, when I restarted it my idle was bouncing all over the place all the way up to 2500rpm and down to 1300rpm. Also, in addition to the idle every time i started pressing the gas the car would KICK like something was wrong with the transmission and a CEL came on. I ran the codes and it said MAF was at fault and I have had a MAF code again maybe a month ago.
I am thinking of replacing the MAF to see if it fixes the problem and I was wondering if it is a straight hardware swap or will i need to do some programming with a vag com?
View 7 Replies
Even on a warm day, when I "cold start" the car....the revs hang high for a long time....at least a good minute or two. This is my first PZEV(VW) engine though--CPRA--so I'm assuming it's for the emissions? With the intake & exhaust I have on...it's obviously A LOT more noticable.
For the first 10-15 seconds, there is a HUGE sucking sound for the SAI pump and then that shuts off....but then it still screams along at 1,200-1,500 RPM's for another minute or two until it'll FINALLY settle down to idle.
View 5 Replies
My ICP is running low, 460 to 480 at idle and bouncing all over the place. It doesn't get above 2500 or so at WOT acceleration the ECM is throwing a "pending" DTC for low ICP. I removed the ICP regulator solenoid coil and cleaned the inside, filled the connector with dielectric grease and reconnected. That worked for a while but it's creeping down again. I'm going to pull the ICP regulator and clean and rebuild it as soon as I figure out how to do it w/o taking the whole HPOP assy off. How to determine if the root cause is the ICP reg. or the HPOP? Regulator duty cycle is running 15-20% at idle and less than 30% the rest of the time which makes me think it's the HPOP.
View 14 Replies
I bought my 3.6 in november with 2k miles on and now have 15k, in the last month or 2 I've noticed that at odd times it idles high. It normally idles at 500-600 id say and will randomly peak to 1000-1100. It wouldn't really bother me except it sounds like hell and I have to practically stand on the brakes for it not to jump forward. I've had 13k miles and 6 months of problem free driving
View 5 Replies
The other day when it was raining out my car started idling below 1,000RPM/running rough. I was thinking it might be the coils, so I changed those, cleaned out my TB (Throttle Body), did a TB alignment (with VAG-COM) and now my car is idling at 1,200RPM and jumping up to about 1,600-1,800RPM, like I'm constantly revving it. I even swapped out my whole TB from my A4 and it still does it! If I disconnect the throttle position sensor it seems to idle normal.
View 2 Replies
My buddy just bought a vr6 2001 and it has a problem! the previous owner said it had an oil leak and didn't notice it until it started ticking! ok not a big deal! we changed what was left of the oil with semi synthetic 5w20, and put a new filter on it! figured out that the oil was leaking out of the filter gasket , how he didn't notice is beyond me! now the ticking has gotten quiet BUT now it idles high! there is now CEL and the previous owner said it did not do it before the ticking! so my question is how did running low on oil, and POSSIBLY messing up a lifter or two cause it to be idling high? It only idles high in park between 1 and 2000 rpm!
View 1 Replies
When I start my car now, it will idle up to about 1900 rpm, then idle down from there (even when engine is warm!). Also, I drove about 30 minutes, and a guy in a lancer decided he wanted to race me, but it seemed like I wasn't getting all the power I should! I tested this theory in an empty parking lot, where I found that my tires wouldn't brake free even at high RPM with stage1. This has never happened before, and I am a little worried at this point. My mod list is in my cig below in case your wondering, of if that makes a difference. What should I look for.
View 12 Replies
The notorious 3.6 high idle has haunted me for over a year now. When it first started happening, I thought it was a temporary thing. It has been happening for a year now and the stealership has not been able to diagnose it. It has started happening more frequently now, no matter the weather. The idle overall is just rough. I place the car in neutral sometimes at a red light because the vibration and idel is so rough. The transmission is sluggish, and as i come to a stop sometimes, i can feel the rough downshifts it makes from gear to gear. And just today, after I picked up the car from the dealership from a failed diagnosis of the high rev problem, my parking sensors stopped working. When the system turns on(car in Reverse), there is a steady beep even while there is nothing behind me. Even as the car is moving(below 10mph) the car makes three beeps, every five seconds or so. I do not know what to do. I have a feeling that even if I take it to a different stealership, I will get the same results.
View 4 Replies
Ok so here's the thing. I put an intake on the car. But the engine shakes badly and the RPM keeps bouncing. There is no air leak. Is there any vag-com programming that needs to be done for the intake to work since it is going to be different than the stock one? t is a 2.0t engine.
View 11 Replies
2010 wagon is doing great as my daily commuter and a long distance hauler for my wife and two kids on weekends, but I'd love to cut down on the floatiness and fore-aft body motion over swells. I put Bilstein HDs and a rear stabilizer bar (really a torsion beam stiffener) on my old 2000 wagon and left the springs stock after I'd read on these boards the idea that the B5 was under-dampened, and though the changes were big improvement and good compromise. People seem to like to touring cup kit, but I don't particularly want to drop the car and would like to preserve as much of the ride quality as possible.
View 6 Replies
I opened the trunk to put something in this morning and when I tried to close it the darn thing kept bouncing right back up. So I luckily brought it directly to the dealership who was able to get me an appt. at 11:30 the same day. By 11:45 I got a call that the trunk latch was faulty and had been replaced and the car was ready to go.It was really annoying because there is no way to actually tie down the trunk if it won't close, so I had to drive to the dealership with my trunk open! You'd think they could have put some type of clips or hooks to hook up.
View 23 Replies
I have searched a decent amount on this and it seems like there is a whole list of items that could cause these problems. The car is a 2008 Passat 2.0T with the tiptronic. It is the early 2008 so it still has the FSI motor. It only has 53k on it and literally just came out of warranty a month or two before this all started happening.
It all started with the CEL coming on and the went into limp mode. We shut it off and turned it back on, the car went into limp mode again but upon the 3rd restart the car started and ran just fine. Then for a few weeks we just had a CEL (I don't know what code it was because I never scanned it at the time). Now as of lately the car is have a terrible rough idle, and at stops it will start kinda shaking and lurching forward. Sometimes it will also have a noticeable misfire upon start up. Also after going at highway speeds for some time the car will start to produce a squealing noise when not producing boost.
A few days ago I scanned it and these codes came back:
P0110
P0101
P0102
P0104
P0108
P0171
The first 5 IIRC are related to misfires and the P0171 is a lean code.
At first I thought this was the PCV valve because I had read about the lurching and the squeal that someone else had from that but after reading up more on things I am worried the P0171 is from the cam follower.
At this point I am just very tired of hearing my wife constantly complaining about the car. I want to try and figure this out without throwing part after part at it. I can't afford to buy items just to find out they aren't fixing it.
View 4 Replies
I've been dealing with this for over a year. 97 s-10 (4.3, 4wd, 5spd) always wants to keep revving. When I put it in neutral and coast, the rpms rise. When in gear, it powers itself down the road even when I'm off the gas. The part that really gets me, is that it will keep revving in neutral until the vehicle comes to a COMPLETE STOP. Then, it drops to a nice idle within 2-3 seconds. I don't understand what the momentum of the vehicle has to with the revving of the engine when its in neutral.? I replaced the IAC valve (and set the pintle) and tried to clean up everything I could. It seemed to be better for only a little while. Faulty new part? Is the IAC getting "gummed up" quickly because of something else?
View 3 Replies
My 2001 Hyundai Santa Fe has recently started idling very high when put in park or neutral. While in drive the engine idles above 1K and you need to keep your foot on the brake to keep from moving forward. If you shut down the vehicle while idling high, the car will not start right away. It needs to cool down for 10 -15 minutes before restarting. It will run fine for awhile but will go back to revving up again.
View 7 Replies
