So I have a 2.0 jetta and I'm having this problem where my rpms fluctuate at idle and sometimes the car dies unless I give it gas.but when I'm driving if I'm not in gear and stop it sometimes dies.
I'm getting 5 codes : P0445, P0135, P0037, P0418, P1473
I checked all my grounds I changed the 02 sensor on the manifold checked for cut wires and nothing ...
I have a 03 jetta 1.8t and for as long as i can remember my rpms would always fluctuate whenever ever i was idling and then there would be sometimes where i would be accelerating and i would have no power and then all of a sudden it would kick in kinda jerky like. About a week ago tho for some reason my car would just all of a sudden die when i would come to a complete stop and it did it about 5 times that day but when it died it would start right back up fine. I've been having this problem for quit awhile.
I have gotten told maybe coilpacks, n75 valve, o2 sensor, MAF i ended up buying a can of sensor cleaner and cleaned out sensor but that doesn't look like it did the trick. i have also noticed when i drive her pretty hard sometimes the rpms will fluctuate a lot more frequently than normal there also times where when ever i start in 1st gear it doesn't feel like i have all the power have than usual and I've noticed it only feel like that in 1st and second gear sometimes.
My 1998 Honda Civic DX's RPMs are fluctuating during idle. I start the car and it is normal for about two seconds. I am assuming around 800 rpms (I don't have a tachometer). Then it jumps drastically higher, then lower, then higher, etc. Earlier tonight I replaced the throttle body gasket, replaced the spark plug wires, and cleaned the fuel injector cleaners. I took off several things in the process. I think the problem originates from taking apart the throttle body - not the other replaced parts. I have a manual 2-door 1998 Honda Civic DX with a 1.6L engine (D16Y7 engine to be exact).
View 15 RepliesTruck: Ranger
Year: 1990
Engine: 2.3 Lima
Trans: 5 Speed Manual
Miles: 83,445
Recently Replaced:Oil Pressure Switch
Oil Pan Gasket
Crank Position Sensor
Spark Plugs
Plug Wireset
Ignition Control Module
Driver Side Coilpack
After I got done with all of this crap on my Ranger, I noticed that it was driving great! But...today I was on my way to school and BAM! My engine idle started hitting (presumably because I do not have a tachometer) about 3000RPM and lowering down to about 2500RPM and from there, every time I am not in gear it decided to fluctuate between 2500RPM and 3000RPM. Crazy style too.
Now, I got to school, and getting closer to it at a stop light the truck basically died. It was almost at 100'ish RPM. I gave it gas, and BAM. I hear a continuous hissing noise from under my hood. Haven't diagnosed it fully yet because I just got home and its 12AM.
Now, every time I stop at a light or in traffic or whatever it may be, I have to give it gas every other second, like a small push on the pedal, to make sure the truck doesn't die. Also, every time I am out of gear and my RPM's are at an 'idle' state, I get continuous hissing from somewhere, I get no power loss or anything, just really weird idle RPM's and hissing when my foot is not on the gas basically. It is strange. I think It is some sort of Vacuum leak but I am not sure.
To get a better picture of the 'hissing' noise, it is the same hissing as you would hear when letting the air out of a tire. That is the best way I could describe it.
I have a 1999.5 jetta vr6, the CEL is on (p0102 MAF sensor circuit low or something like that...). When i start it up, it often dies really soon after and until its warm it will idle really roughly. I'll have to start it up between 5 and 15 times... Once its warm and about 190 F oil temp it runs just fine, but still has a slightly rough idle.
I have a new MAF sensor coming in, or if there are any other things i should check that might contribute to the problem.
My golf 2.0 vw isn't doing so good right now. It has 227000 miles on it. It has been driving great, and then last week it started to idle rough. It idles between 600-800 rpms. it fluctuates between 600-800 rpms. It had the check engine light on before this happened i was told by my brother that it was an 02 sensor. I had it checked for what is causing the engine light to come on today at o Rileys, and it came up with 11 codes. Some of the codes where 02 sensors, it was running to rich, needed a new computer, evaps system, fuel pump, fuses, coil pack, spark plugs, It shakes when you sit in it when it is idling like not a bad shake but a small one you cal feel, l'm including a video of it running.
View 6 RepliesRecently I believe i got a tank of bad gas. Was having problems starting. Finished it off filled up used injector cleaner and dry gas to clean it out a bit more. Now as I was driving the car would basically stall out but kick back in as I was driving and the EPC light would come on. I've been reading up and most answers are a bad coil pack. I pulled them all out and checked them they all look pretty good. No codes are popping up for it a coil pack. Unless I need a specific VW model computer to check. I'm gonna check the volts on the coil packs today to see as well.
The EPC light does go off after the car sits a while. It comes back after a few miles driving. After the EPC light comes on my car will idle at 1200 RPMs up from 800 when its normal.
The problems seems to be getting progressively worse, it has a rough idle and when it smooths out is only at about 600 rpms and still sounds strange. Also, I am running extremely rich, blows flames quite often and in OCMD I went 100 miles on a half tank. Car is stage 1 unitonic with sai and evap deleted. I changed the maf and that didn't change anything. I was searching for vacuum leaks yesterday and noticed that one of the vacuum caps I have on the bottom of the intake manifold was dried out so I took it off so i could put my finger over it and see if it ran better, when the cap was off it ran great but when I put my finger over it it would go back to an awful idle Now when I come to a stop it will sometimes drop the rpm so low that it shuts off, when I am driving you can't tell a difference.
View 1 Replies1.8T Car only has 73k on it.? When I am sitting at a stop I can hear a vibration sound coming from the engine bay. It goes away as soon as RPMs hit about 2000. My best guess is old, worn out engine mounts.
View 6 RepliesHave a 2001 wolfs-burg 1.8t, has about 220k miles on it, i know, its a lot. Right now, the check engine light has been on for a few months and the idle is very weird. It goes up and down in neutral from 800-1300 rpms and sometimes i smell gas. Also the triangle with an '!' and circle around it yellow light comes on some times now. I heard it could be MAF or a vacuum leak. A mechanic is going to check it out soon...
View 10 RepliesRandom rough idle about every 30 seconds at low 700s (rpms) and it'll bounce up and down a little. The code was p1515 (No CEL or other lights have come on yet) which is something about the intake manifold valve and there is an air-shooting noise that is pretty loud but just sounds like air that's being lost somewhere like maybe a leak and that happens when i rev right before you can hear the engine rev the air/shooting noise occurs. I don't really think I'm losing power but I got the car recently so maybe I am and don't notice it. If this is a common leak or something with the intake manifold valve let me know,
View 2 RepliesLately, my 1990 Integra has been idling VERY low. Some mornings, while idling at a stop, the rpms fluctuate up and down to the point where it almost dies. Is it just cold? I live in coastal San Diego, so it's not freezing here. This morning, had to keep my foot on the gas to keep the car from stalling before getting home from dropping son off at school. It died in the driveway. Started up just fine right afterwards, but idled down to nothing. Now it idles okay, but at a pretty low rpms, like usual. NOW, the battery, a SEARS Diehard Silver, is near the end of its usable life. Prorated 84,000 mile replacement warranty, but I have had it for 8.5 years and have 1 82,000 miles on it. YES! I have been meaning to replace it, as it is leaking some nasty stuff at the terminals, but wonder if the weird idling is a symptom of something else, since the car still turns over.
View 12 RepliesCold start. engine starts but wont idle, just dies. rpms drop. Restart same. Must neutral drop to get going keep rpms up until engines shifts then things are fine until next cold start. Cleaned throttle, changed air filter, dry gas, injector cleaner, no warning signal, scans clean. 180k miles.
View 6 RepliesI got an old 1989 F-150, manual, in-line 6 engine, with an 8-foot bed. I use it for hauling landscaping equipment, as i am starting a business. i will likely start hauling trailers with it this summer, but I also just want the engine to give me more power.
What are some things I could do to up the HP, or a better truck in general. I'm not looking to make it into a 350Hp monster, just get a little more out of it. What can I replace or add that would do this?
First, the idle dies on me when i put it in neutral, or gets stuck at 2500rpms. is this a vacuum leak, or the idle-air control valve?
i got a problem with my 96' 2.4 auto cavalier. It idles really rough at idle. I've replaced alternator, battery, idle air control valve, intake, plugs, and the fuel pump in the last year and a half. I've noticed that the rpms will fluctuate between about 625-675 when it's idling rough. About once every 11 seconds the car will rev up for a moment and will idle smooth but then it idle rough again. Every one in a while it will throw trouble code p0200 random multiple cylinder misfire.
View 14 RepliesI have a 2001 Hyundai Santa Fe LX with 214,000 miles on it. In general, I am having two problems which are most likely related. I would like to get opinions on what is causing the problems, how to fix the problems, and what the cost might be for the fix. This is an older car and I don't want to bring it to a mechanic to just do searching.
1. RPMs fluctuate quickly at slower speeds in town stop and go traffic and while parking in Drive or Reverse. Fluctuation can be between 1000 to 2000 and 3000 RPMs back and forth.
2. Car stalls while sitting at stops when in Drive. When car stalls, RPMs have suddenly decreased to 0 (zero).
3. RPMs fluctuating and car stalling typically occur after I have made my first stop and have turned off the car.
There is also a Check Engine Light Code: P0304, Cylinder 4 Misfire Detected. I changed the vehicle speed sensor a few months ago.
Here are the details of what has been happening, when it happens, and what I have tried.
- When RPMs fluctuate, the car slowly accelerates and slows down and I can hear revving high and low. This happens when the RPMS fluctuate just a few RPMs around 1000 and when the RPMs are fluctuating up to higher RPMs.
- After the car has been driven for about 45 minutes and car is at slower speeds, RPMs will fall to zero while at stop and in Drive, and the RPM fluctuation will begin.
- RPMs jump to 2000 or 3000 and stay there but do not fluctuate when car is put in Park and Neutral.
- When car is in Park and at 2000 or 3000 RPMs, car takes a few extra seconds to turn off.
- Car accelerates without pressing gas pedal and will accelerate up to 40 mph.
- Car will sometimes lurch at slower speeds of 15, 25, and 35 mph when RPMs are fluctuating or when the gas pedal is pressed.
- When RPMs are fluctuating and at 1000 or higher and I am pressing the brake to slow down, the car fights in Drive and in Reverse.
- RPM fluctuation does not occur at interstate speeds.
- A couple days ago, when I was at interstate speeds of 60 to 75 mph and pressed the gas pedal, the car would stutter and jerk.
- RPM fluctuation and stalling primarily do not occur when the car is started at the beginning of the day or when the car has been off for several hours.
- Twice In the last week the RPM fluctuation and stalling occurred even after car was not started for several hours and after only about 5 to 10 minutes of driving in town stop and go traffic.
- Sometimes car stalls when I'm at a stop and slightly press the gas pedal to start driving.
- There are times in town traffic when the car is operating normally and is at 750 RPMs at stop, then the RPMs suddenly decreased from 750 to 0 (zero) and the car stalls.
- From Neutral, sometimes when I simultaneously put the car in Drive and press the gas pedal either by feathering or forcefully pressing pedal 3/4 to the floor, the car would have a delayed reaction to accelerate but would not shut off.
- After car has stalled, if I try to start it right away, the car cranks but does not start for about 5 minutes.
- The time between stalling and being able to get the car to turn back on has increased over time from starting up at first crank to not starting for 5 minutes.
- If I let the car sit for 3 to 5 minutes after it has stalled, the car starts up but takes a couple seconds to start while pumping the gas pedal.
- Issues have been happening since November but are getting more frequent.
- Stalling is happening more frequently and within minutes of each other.
A few weeks ago, my 09 Sonata V6 starting fluctuating (slightly) abnormally when starting from a cold start. I attributed this to the cold snap (25F mornings down from 40's). To be safe I used a fuel system cleaner at the next fill up.
When the issue didn't immediately go away, I was a little concerned, but extremely busy with work. After 2 weeks of needing to start the car and let it warm up for 10 minutes... things got a lot worse.
RPMs started fluctuating between 2500 and 500. Rev, choke, rev, choke. I got it to the dealer... but it had of course warmed up. Another thread had a similar issue, so I checked for and got an ECM update, reset the adaptive memory, and had the (just due) transmission flush.
No change. The next night, I parked the car in the dealer's lot and let them start it. I suspected the Throttle Position Sensor (TPS) but wanted the dealership to independently confirm. The head mechanic definitely noticed it, confirmed with me, and replaced the TPS, did a carbon cleanout and oil change. So far, 2 weeks later, no issues.
Noticed that when you first start the car it makes a very strange noise? Almost as if the motor was running dry for a few seconds and the rpms fluctuate a little... Is that normal? I've only recently owned my camry and was just curious. 2.5L motor.
View 14 RepliesRPMs fluctuate from very high to very low without me doing anything. It doesn't do it all the time, so far its happened 4-5 times in the past 3 days. I first noticed it when driving, I took my foot off the gas to break and it started doing it and once I hit the gas it stopped. It seems to be getting worse because today I put it in the park and when it should have jumped into idle it started and even when I hit the gas it didn't stop. Like I said the RPMs fluctuate from very high to very low in a few seconds regular intervals.
View 2 RepliesAfter start up it bucks and surges, acts like it is starving. RPMs fluctuate. Once it fully warms up and driven a little bit it clears and runs normal. This all began after the alternator went bad and battery warning light came on. Batteries never went completely dead, but could low batteries effect sensors or control module. This morning it was difficult to start, not low battery problem, but a lot of bucking and black smoke. I changed the fuel filters and a little better. New air filter last week when alternator was replaced. No codes have appeared.
View 2 RepliesHave a 93 Bronco, 5.0. replaced battery, IAV and had a complete tune-up. Now starts great, runs fine until it gets warm, than in about 5 - 10 minutes the idle starts to fluctuate. A little at first but eventually between 1000 to 300 rpm and will stall if you don't give it some gas. Turn it off, restart, starts fine and runs OK again for a while.
View 2 Replies