Golf IV / Jetta IV :: CEL On / Idle Goes Up And Down In Neutral From 800 - 1300 RPMs
Dec 9, 2014
Have 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...
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I have a 2003 Ford Musang 3.8L v6 when I start my car for the first time of the day or after several hours of sitting the car idles high between 1000-1300 RPMs for approximately 15-20 seconds after that it idles down to 600-800 rpms. I changed the spark plugs wires air filter not sure what else it could be no Check engine light.
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So I had this issue with my idling at 1300 rpms but every now and then it would idle at 400 and barley run then one day it didnt want to idle at all so I checked the iac and it was bad so I changed my oil, fuel filter, iac, cleaned my throttle body, fixed a vacuum hose, and cleaned my air filter.
When I started it it idle at 2200 I drove it a little and it dropped down to 1300 the next day I started it and it idled at 800 and staid there for four days now it idles at 2000 then will drop down and surge between 1300 and 1800.
I read that the oil you apply to the filter can contaminate the Maf and you should clean it but a lot of people said the one on a vr4 can't be cleaned while others say it fine. Is there a way to check the maf?
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I just flushed my coolant system and installed a red ELC, Riffraff billet thermo housing, Ford thermostat, new hoses and Riffraff coolant filter. When I first started the truck and was waiting for the thermostat to open I notice at idle the flow from the coolant filter into the Degas bottle was a lot.
Fast forward a week and about 75 miles I have zero flow at idle and it will start to dribble at about 1300 RPM's and increase from there. It seems the flow would not be dependent of the thermostat being open since the connection is below it. I am wondering if my Donaldson filter is already full?
I used a flusher that uses air and water, after flushing I used air to blow to tap water out. How fast have you guys seen one fill up? I ordered 2 extra but just do not want to waste the first one
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It started snowing going down to 10-15 degrees during school hours. and whenever i go to turn my car on it starts but immediately the RPMs rise to about 1300 and then immediately drops to about 300 then immediately back up to 1200 but stays steady until it warms up then drops to normal about 700. i understand the cold start when it idles high until it warms up but why does it drop then come back up?
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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.
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Recently 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.
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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.
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1.8T 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.
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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 ...
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i have a 96 240 w/ sr20det 5 spd. Problem comes and goes. When at a stop in neutral idles between 1300 rpm down to 0 and almost stalling, then when i take off ( and in any gear) there is noticeable lag and engine wont rev past 5200 rpm like there is a rev limiter or governor. then the problem will just go away for a while. I've only tried cleaning the IAC valve.
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Random 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,
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Im curious if this is normal or not. When I'm driving and I put my car into neutral to coast, the idle speed is at around 900rpm. When I come to a stop, the idle will drop to around 650rpm. Is this a design feature? I wish the rpm would drop more to conserve on gas while I'm coasting!
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I 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?
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So I drive a 2008 R32/U.S. spec and I was in neutral when I pressed the throttle and it would not rev over 4000 rpms and was wondering why??
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I've noticed something new on my R32 recently. If I let the car sit in neutral with the motor on it's rpms will start to climb slowly. Normally it idles at around 800 rpm but when this happens it will climb to around 1200 rpm and stay there. Usually it takes a couple of minutes but you can slowly see the tach climbing. Also, you can feel the engine slowly revving as well (can hear it).
Now this doesn't happen all the time. I've only experienced it a few times in the past couple of weeks and only seems to happen if the car has been sitting idle with the motor on for at least 10 minutes (it happens when I've been at sonic waiting for an order). I can bring the rpms back to normal if I rev the car up to around 3.5k and let the motor settle back down to idle. What is causing this?
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So my 11' F350 is over heating when the engine RPM's are below about 1300 whether the truck is moving or not. If I let it idle for 2-5 minutes I can watch the temp gauge go to red and an engine over temp message appears. I noticed that if I rev the engine to > 1300 RPM it cools back down.
This appears to be a water pump going bad, any other thoughts? Are there instructions for changing the water pump here on the forum?
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So, I recently began noticing a weird vibration when I'm at idle and in neutral (with clutch pedal released), for example at a stop light.
It is a very low frequency shudder - as if someone was intermittently shaking their leg in the passenger seat, shimmying the car... It is not continuous, and not consistent. It often, but not always, occurs with a period of around 5-7 seconds, i.e. every 5-7 seconds it's like someone just shook their leg in the passenger seat.
I'm worried something may be wrong as I don't recall noticing this in the past, but then again, it's subtle enough i might have missed it. I'm at about 50 kmi on my 2010 Golf TDI.
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I've got a 2004 1.8t GLI. I recently developed a problem where the car will idle very poorly at random times, where it goes down to 500, jumps up to a 1000, and continues that and eventually levels out. Also, occasionally while I am driving and put it in neutral to coast, the engine will die. This has also happened at stop signs/red lights. I had it scanned via VCDS, and the only two codes that popped up were running lean, and an n249 code. I already changed the MAF out, changed the alternator. Where to go next.
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I have a 2004.5 Jetta GLI 1.8T. 96K miles.
The sound just started a couple of weeks ago and is becoming more prominent. On cold starts (like in the morning or after sitting for a while), the front right of the car makes a repeated clicking/ clunking sound while in neutral. However, the second I apply any gas, the sound goes away. Only when my engine is idling at around 700-800 rpms does it make the sound. After driving the car around for about 10 minutes or so ("warming up"), the sound eventually goes away and comes back on the next cold start.
Yesterday, my ABS light came on and never went away. I have no idea if there's any relation. May be a separate issue. I've tried searching for a diagnosis with no luck. Thoughts on what I might be hearing?
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My issues: when I'm on gear 1 for example, on hot days, and only on hot days ( 25 deg.c and more) when I put it on neutral it suppose to go at "home" position ( i think this is how you guys call it, like align with the 3rd gear) But it stays align the the first.
Same with all the gears. It's stays aligned with the gear I just left.
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