Santa FE SM (2001-06) :: Erratic Idle - Revs Up And Down From 1200 To 2600 RPM
Daughter's 2001 Santa Fe Delta V-6 2.5 engine, needed lower ball joints. Replaced the entire lower arms as more cost effective & actually a bit less work, for me anyway.
So While under it, see oil dripping down back of engine. Decided to replace valve cover gaskets. So I start to disconnect all the involved connectors, brackets etc to pull the Upper air intake to get to the rear cover.
While moving around, find most of the hoses & vac lines baked brittle and dried out and loose even tho clamped, so I replace all of those, plus the PCV valve., & the upper & lower radiator hoses as well. I only removed the upper 1/2 of the intake. I change out the cover gaskets, reassemble every thing, reconnect all the connectors. I noticed that some of the connectors could apparently be switched to other sensors, but since all the lines seemed so backed solid, they actually retained their positions to go back onto the proper sensors.(at least I hoped so & it seemed that way).
Anyway, every thing back together & tightened up, so I start it up & the idle is at about 3000 to 3400 RPMs. WTF? So I pop the throttle a couple of times by hand and finally it drops down to normal, then just as suddenly, it begins SEARCHING for lack of a better word, and starts racing upto 2600 rpm then drops to 1200 then up again then down again.
No check engine light or other idiot lights on. So I shut it down & check all the connections and hoses, nothing disconnected or left off or loose. I start it again, and it immediately begins running high & low searching for the idle again.
I shut it down again, and put the MacPro scanner on it and NO codes either set or pending. I next check the Haynes Manual I have for it, & the closest thing I can find to my problem says: Engine Lopes while idling or idles erratically 1) Vac leak 2) Leaking EGR 3)Air filt clogged 4) Fuel pump not delivering enough fuel 5) Leaking head gasket 6) Timing belt/sprockets worn 7) Camshaft lobes worn
By process of elimination, not #'s 2) According to service manual, there is no EGR valve on the 2.7, and I couldn't find one either, #3) Air Filter is new & clean, #4) ran fine before I worked on it & with the engine revving up to 34 or 3600 rpms, getting plenty of fuel, #5) Have had many head gasket problems over the years on many vehicles, never anything like this, and again, it ran fine until I worked on it #6 & 7) Doesn't seem to me to be a belt sprocket or cam shaft problem, as none of that was touched & again, it ran fine until I worked on it. This kind of narrows it down to #1, for me, but this is not like any vacuum leak I have ever come across in 45 years of auto repair. I have found & fixed many stumbling idles due to minor leaks but never had anything like this.
I next called a friend who owned an automotive machine shop & who I used to do work for, and now runs a highway dept garage for a municipality who has been a certified mechanic for many years, told him all the above & the only thing he could come up with was a MAJOR vacuum leak, like possibly the upper plenum gasket rolled up or got torn some how when I replaced the plenum and he suggested that I try a smoke test.
Scratching my head, I go back to the car, & break out my home made smoke machine that I use to successfully pinpoint leaks in emissions systems. I ran it for quite awhile, and found some light smoke leaking from somewhere down around the head, but due to the construction of the engine & no way to get the light to shine under the plenum, could only guess that he may have been right & that there may be a large leak down at the lower intake manifold to head gasket. Needless to say, I removed the upper plenum again, & this time also the manifold to heads, and the gaskets looked like they may possibly have leaked slightly between the ports, & quite possibly somewhere around the number 6 cylinder. So I cleaned the surfaces & am putting on the new gaskets that came in the set with the upper plenum to manifold gasket set.
My questions after relating all of this:
1) The 2 gaskets between the manifold & the cylinder heads have a blue stripe around all 3 cylinder port holes (appears to be some kind of sealant or factory applied silicone bead) & there are no markings of any kind anywhere on the gaskets, so do the blue stripes face DOWN to the heads or UP to the bottom of the intake manifold ?
2) Regardless of which way these stripes face, should I use any kind of high temp sealant around the port holes in addition to the gaskets, or just install them dry ?
3) Can the Idle Air Control on the Throttle Body Fail & affect the idle like the problem I am having, but NOT set a computer code ?
4) Can the Throttle Position Sensor affect the idle like this and NOT set a computer code?
5) I also found an electronic valve between the Air Intake & firewall, it is labeled PCV and has an OEM part number after that, I believe this to be the Purge Control Valve, which connects the TB to a plastic line which I believe runs down to the emissions canister under the vehicles front seats. Am I correct in thinking that even if this part had failed, it would have NOTHING to do with my erratic Idle problem, but would throw an emissions computer code?
Golf VI R :: Dropping Revs And Stalling When Pushed The Clutch In
About 2-3 months ago I noticed that whenever I would push the clutch in and let the revs drop, they would drop below the 800 rpm mark and the car would automatically rev them back up to prevent from stalling. This usually happens when I am slowing to come to a stop, like coming down an off-ramp or to a stop light. Then one night after a 45 minute steady speed highway drive, I pushed the clutch in, shifted to neutral and let the clutch out and coasted to a stop. As the revs dropped, the engine stalled completely and the red alternator warning light came on. While still rolling on the highway, I pushed and held the start/stop button and it immediately started back up.
Over the last 6 weeks, this has become more frequently. It is now at a point where the revs will pretty much always drop below 800 rpm when I slow down and the car usually revs them back. However, I have had six more stall episodes like the one above and it is starting to scare me about driving. I find myself revving the engine when I coast in neutral to slow down to prevent this from happening. This happens either with the clutch depressed and gear engaged and slowing or clutch out and in neutral gear.
The car has never had issues. I am the sole owner. Just coming up on 30,000 miles. I currently have UM tune stage 2, EVOMS intake, APR HPFP, 42DD downpipe with stock cat-back exhaust, HPA short shifter with metal cable bushings, Stoptech Street rotors and pads, VWR springs and RSR clutch, which was installed at about 22,000 miles one year ago. Have serviced it religiously, oil changes every 5,000 miles, did the water pump recall and had no issues thus far.
I moved from high-elevation Utah to New Hampshire last summer. The tune and calibration were all done in Utah prior to the move. These symptoms/issues beginning and getting worse coincided with the cold winter and lots of snow were are having. Could that and the tune having been calibrated at another elevation have anything to do with this?
Golf/GTI VI :: Engine Revs High On Startup And Release Clutch Noise
I have a MT '12 Golf 2.5L with around 8k miles. I always park with the transmission in neutral. When I first start it up in the morning, the engine revs high, around 1500RPM, so I can clearly hear the engine inside the car. I start it, it revs up and holds, and when I release the clutch I hear what sounds like a rev, but the tach doesn't move.
I believe the GTI doesn't need the clutch depressed for the entire turn over, but the Golf does, so I have to hold it until the engine is running. It may not be a big deal, but I'm just wondering why releasing the clutch in neutral would make a noise. I don't hear it any other time than at start up.
Golf/GTI VI :: 2010 - DSG Slipping After Clutch Replacement
I own a 2010 GTI stage 2+ with 430hp, I just had a clutch replacement from
dodson motorsport that can handle more power up to 700hp, before the replacement I had serious slipping, when I was pushing the car from 4k rpm, the "DSG OVERHEATING" blink on the dashboard, now after the replacement and the dsg software I still have slippage, do you think it comes from mechatronic? The tuners said that might be the mechatronic due to the fact that the two valves of pressure does not send too much oil to the clutches and creates slippage. Should I change only the two valves or the mechatronic complete.
This was the stock "burned" clutch
And this is the new DODSON MOTORSPORT CLUTCH PACK FOR 700whp
Golf IV / Jetta IV :: Transmission And Clutch Replacement
I am not very familiar with transmissions and clutches, hence I just purchased a used transmission for my jetta 1.8t, i was told that i might as well do the clutch while the transmission is getting done. I just purchased the car two years ago and the guy said that he put a vr6 clutch in. so my question is, what exactly will i need to get for both the transmission and clutch replacement. Like I mentioned, I only have bought the transmission so far.
View 6 RepliesGolf IV / Jetta IV :: Clutch Pedal Feels Soft Since Replacement - No Air Coming Out
I changed my oem clutch in my mk4 golf 2.0l with a stage 1 ecs tuning clutch kit. Lightweight flywheel, clutch disk, pressure plate and throw out bearing. But since I have my clutch pedal has been less stiff then usual. I like my clutch pedal as stiff as possible but it just isn't I bled off the slave cylinder. When I was done no air was coming out but it is still way to soft for me. What should I do next??
View 6 RepliesPassat (B5) :: Car Revs But The Clutch Doesn't Grip Tight
Here's my problem, when I'm on a hill and I engage first and let go of the clutch the car revs but the clutch doesn't grip tight. It's slow to engage but during regular driving my clutch is fine. My only problem is on hills.
View 9 RepliesAccent RB (2012+) :: Engine Revs When Clutch Depressed
I bought my Hyundai new in late 2011. No problems with the car (other than no spare tire???) until just out of the warranty (63,000). Had a noticeable drop in power on the highway. No warning lights. Drove another 100 miles with power intermittently dropping. Next day engine light comes on. $800 later I have a new high pressure fuel pump. All seems well. after a few weeks, I notice that the car seems to be revving when I depress the clutch to change gears, like up to 4000 rpm's. If I leave the clutch in for a few seconds it will begin to decrease. But if I shift right into gear as I have done for the last 35 years of driving, it is not smooth, jerky. This seems to happen mostly going into 2,3, and 4th gear, always going up. It never happens when downshifting. I tried tapping the brakes when shifting up, and sometimes it does seems to drop the rpm's. What it might be. It probably is related to the work that was done, but I don't really trust the dealer and want to have a little info going in.
View 1 RepliesFord Ranger / B-Series :: 2004 - Revs Engine When Clutch Engages?
2004 Ford Ranger revs the engine when you engage the clutch then when you place it in gear it's like the cruises on it want to drive without you touching the Accelerator?
View 4 RepliesCivic - Honda :: Replaced Clutch Master Cylinder Now Revs RPMs While Accelerating?
Replaced clutch master cylinder last week. Now when I accelerate it revs the RPM's and finally catches after about 5-10 seconds. Is this related to the previous repair? They are saying needing new clutch. What to do?
View 3 RepliesGolf IV R32 :: Erratic Shudder Occurs At Different Speeds
Well for a couple of months now I've had a really erratic shudder that occurred at different speeds and at different RPMs... I checked motor mounts, wheel balance, CV Joints, flywheel, etc. and when I took it to my mechanic, he discovered a sliced exhaust hanger in the middle of the exhaust system and nothing else.
Well after replacing this rubber hanger this vibration miraculously stopped occurring. I realized now that the movement of the exhaust which was created over certain roads with undulation caused it to flex harmonically and interrupt the workings of my Koni FSDs.
I really began to think the struts were the culprit but in the end realized the frequency from the loose exhaust was too much for the Frequency Sensing Dampers to counteract as the movements and inertia were opposite the motion of the car itself. She's now smooth as silk at highway speeds once again and only a slight vibration from the race strut bushings which were recently upgraded from stock can be felt through the steering wheel.
Golf IV / Jetta IV :: 1999 - Erratic Throttle In Wet Conditions
I have a '99 Jetta 2.0, manual. In wet conditions (heavy slush/rain) the throttle will start to behave erratically, you can feel it against your right foot pulsing in and out. The feeling is almost similar to that when you put cruise control on and feel the car take over the throttle and pull it away from your foot and adjust its position. In fact, at first I thought it was a cruise control issue so I pulled the fuse - no better.
From deliberately driving through puddles in an attempt to isolate the issue, it seems that when something on the passenger side of the car gets wet the issue occurs, almost without fail if I drive through a big puddle on the passenger side. Once it starts, it continues for awhile (I guess until it dries). Even at a stop light, you can see the RPM's rise and fall and feel the throttle pulse without any input from the driver.
I have siliconed the ABS sensor on the passenger wheel, as it was the only exposed sensor I could see when I pulled the wheel off. My question: What sensor under the car could have an effect on throttle? Something is shorting or reading erroneous signals when wet and is causing the computer to think it needs to correct the throttle position. I'm at a loss as to what it could be and google searches have yielded little results.
Accent MC (2006-11) :: Clutch Slipping / Revs High While In Gear Without Accelerating Especially In 5th Gear
I've got a 07 accent with 90k miles on it. It has recently started slipping some (revs high, while in gear, without accelerating, especially in 5th gear). It also can be physically hard to move the shifter into gear sometimes (with my hand).
So, does this mean I need a new clutch? Or are there other possibilities? Should I replace/fix anything with the clutch? Sounds like the flywheel should be resurfaced? Will it shift more smoothly after the fix?
Is this something a newb could do himself? I can change the oil, rotate tires. Outside of that I haven't done much. My toolset for now is fairly limited: two jackstands, a trolley jack, torque-wrench and ratchet sets.
Volvo - V70 :: 2001 - Air Conditioner Clutch Replacement
Is it possible to just change the Air Conditioner Clutch on the Air compressor for the volvo V70?it is rattling and all I can find online are new compressors.
View 6 RepliesCelica :: 1990 - Speedo Is Not Working After Clutch Replacement
I just replaced my clutch and now my speedo is not working ? It did work for about a day after the job, but now it just reads 0 all the time... would low fluid cause that ?? I put two quarts in after putting the trans back ....
View 4 RepliesElantra HD (2006-10) :: Rattling Noise After Clutch Replacement
A few months before warranty expired on my 2009 Elantra I began hearing squeaking noise from clutch (it is 5 speed manual). Three trips to dealer and finally they opened clutch to find bearing being dry and plate dirty - bearing lost seal and all grease leaked.
It was about 50k miles on ODO. Plate, bearing and disk (I said replace it since you are there - I paid for the disk) were installed new. All supposed to be fine... until I got home. Here is what happening.
Fork is "swinging". It does not simply seat in position when released, but you can see it moving.
Clutch - when idle speed, clutch released in neutral there is a loud rattling/grinding noise.
Now, diagnosis at the dealer. They put the car on hoist and claim the tranny is trashed as the wheels were spinning when car was off the ground with engine running and tranny in neutral.
The shaky fork - all car is shaking so this is normal - vibration from engine. Replace tranny and it should be good.
Nissan - Altima :: 2002 - New Clutch Replacement After 6 Weeks - Cause?
On 4/11/11 - we replace the clutch in our son's Nissan Altima. Yesterday - the clutch died as he was getting on the highway. It was towed to the same repair shop. They took a quick look and said it's likely the new clutch is gone. They weren't sure what our son did to it. We're baffled. What could he have done in 6 wks that would totally blow a brand new clutch? At this point - we don't know whether to throw good money after bad.
View 7 RepliesFord Transmission :: 10.25 Trac Lock Clutch Replacement
I've got the clutch pack rebuild kit for this diff and I'm trying to figure out how to do this without all the special tools. I found this post from a guy who did the job:
Sterling 10.25 Trac lock rebuild
This is a great post, but I can't figure out what he's doing with this "all thread" (is this just threaded rod??) to get the spider gears back in. How does this compress the spring plate in the clutch pack? I don't get it.
Ford A/C :: Clutch Bearing Replacement On 1999 F250
My a/c bearing clutch is making alot of noise well i removed the cluch and snap ring and the bearing is still on there. How do i remove the bearing just pry it out or special tool? Its on a 99 f250 sd.
View 3 Replies