Golf IV / Jetta IV :: 2003 - Rough Idle About Every 30 Seconds At Low 700 Rpms And Bounce Up And Down A Little
Aug 15, 2015
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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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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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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I have a 2003 2.0 gas Jetta (181k miles, automatic.) that won't rev over 3k, starts rough, idles rough and wont stop setting a P0341 cam position sensor code.
The car was not running when I got it, I replaced the coil pack and it ran but not over 3k. Cleared codes, it sets the P0341 immediately.
Had timing belt, water pump, tensioner and cam pos sensor replaced. Still, sets p0341 code, starts rough, idles rough and wont rev over 3k.
The throttle servo makes a little noise when actuated, shop thinks this is my demon - suggests replace throttle body. This car is for my son who will be taking it to college soon.
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I'm having a little issue with my 03' vr6. I've had the car for almost 2 months now, which it's pretty new to me, since about the time I got it, the car would sometime roughly idle on start, just for a few seconds, maybe for 10-15 seconds, and then it'll go back to idling at 600-800 rpm and being normal.
This has happened maybe 5 times since I've owned the car, and since then I've changed the battery, and cleaned my MAF. The other day when I started my car it (the rough idle on start) lasted for maybe 30 seconds, so it kinda scared me a bit.
Also there is no check engine light. Other than the weird idle on start, the car feels responsive, quick and there doesn't seem to be lack of power. This is the only mk4 gti I've driven fast in, so there may be lack of power and I just don't know it.
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My '03 7.3 is "surging" on idle. When warmed up, and idling, the RPMs will drop by 300 or 400 for a few seconds and then will correct and shoot back up. It cycles like this (every 5 seconds-ish) continually . I just put in a new IDM and checked the UVCH - is there a separate idle control mechanism that I need to have a look at? (2003, 7.3, 214K, stock).
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I was coming at the climb, my car hit limp mode twice and later I noticed my CEL was on. I let it sit over night when I got where I was going and started it up today started fine but the CEL came on after it ran idle for about 45 seconds. I check the oil and it was on the low end. What it could be?
I drive a mk4 tdi with a malone tune. I am heading back to the valley tomorrow evening I'm just by kamloops right now. Also what oil should I top it with just so it isn't so low for the return trip? (Always get my oil done at the shop)
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2000 5.4l lariat. My cylinder 1 for 2 years has been poping p0301code and has a rough idle at start for about 30 seconds. It also has a little white smoke for that 30seconds. new cop, new spark plug, new spark plug pig tail, swapped injectors to different cylinders multiple times to change code no luck. Compression dry and wet are at 200 and all cylinders are within10%. I had a dorman intake manifold installed 4 years ago and the code came a few years after. Im thinking intake manifold gasket is bad between cylinder 1 and the heater bypass tube allowing coolant to slowly leak down into the cylinder causing my rough start. I looked through the injector hole but could not tell. With all the info I have given is there any other places or things that it could be before I do a gasket replacement or is all my tests leading to the intake manifold gasket...
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1999 F250 LD with 5.4 w/ 225k miles... Was running perfect yesterday when I shut the engine off. Started back up about 20 minutes later and Idles was up and down and rough.( 400 - 900 rpms) Drove and ran fine except Idle. I know that those codes are for the o2 sensors but don't believe they're bad. I hear what sounds like a vacuum leak somewhere behind throttle body. Either IAC or EGR or it could be coming from the line that runs in beside the IAC valve to the air intake in front of the throttle body. Tried spraying water in those areas with no results. Could it be a bad EGR valve or a stuck IAC valve? I have also noticed that lately when I start the engine the engine rpms go up to 2k before dropping down. Would a bad IAC valve cause such rough idling along with the codes that I described?
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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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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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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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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 2003 F250 with the 5.4 and I believe I am having a fuel delivery issue. I took out yesterday and stopped to get a drink at the gas station, came back out and the truck wouldn't start long enough to idle. It would start, barely bounce off zero rpms and die out. I checked the fuel interia switch and it was down. I tried turning the key back and forth thinking it might reset the fuel pump or something and that didnt work. I get the truck towed home and couldn't get it to start last night. I go out this morning and it starts, come home from work and now it won't. This happened about 2 years ago and I never did anything about it, but it took 2 years for it to happen again.
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I own a 2001 Jetta GLX 12v VR6, lately the car has not been running well. It chokes the power past 3500 rpm's and will continue running poorly and sound sort of like a Subaru boxer engine. Sometimes it corrects itself and runs okay but goes back and forth.
I ran the codes on VAG COM:
6 faults found:
17551 - Load calculation cross check
P1143 - 35 - 10 upper limit exceeded - intermittent
16712 - Knock Sensor 1 (g61)
P0328 - 35 - 10 Signal too high - intermittent
[Code] .....
I ran VAG COM a couple of days before these codes came up and I had a different code dealing with air/fuel mixture, something about fuel running to rich. I'm stumped.
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I have an issue with my 7.3.... the truck will not start if it sits overnight without being plugged in, even in 65 degree weather. It starts and runs with a rough idle for about 10 seconds after its been plugged in for an hour, after the rough idle is gone it runs great .. it will Stat back up as long as the truck is warm (70+).... I've replaced the batteries, glow plugs, starter (it was going bad) and fuel filter. .. also replaced the gpr today. ....
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I am having an issue with my speedo and the fuel gauge on my 2002.5 24v vr6. First it started with a speedo that would bounce and dance around. it went away then came back and so on for awhile. Then i notice the fuel gauge would go up or down and would flash that i need to fill as I would go around turns. Also the odometer doesnt work either. I know that the vss could be the cause.
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After putting on a o2 spacer my CEL cleared. I finally got some downtime so I parked the car in the garage to chase electrical gremlins, do the timing belt, and replace the downpipe and catalytic converter. Lately it's been sounding like I have quite the exhaust leak so that spurred me into doing a little quicker. Long story short I got the cat out and after looking inside of it I see this .
The inside of the cat is completely bare, not even a remnant of any form of honeycomb. So was this a hollowed out cat or did everything deteriorate and blowout. I was assuming my cat was clogged because of my rough idle lately... but looks like I was dead wrong.
Now for additional info.
2001 Jetta 2.0 AEG 220K miles
Previously had a CEL for the catylst below threshold
I can't currently check my codes because the OBD2 isn't reading/connecting, but that's not related.
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2002.5 VW Jetta GLI VR6 24V 6-Speed. Barely accepts a small can of Freon from full empty, and pressure goes to over 100 psi in the red, compressor does not kick in, idle fluctuates with A/C button on, small fan kicks on fine, some air pump turns on and off with the erratic idle and sounds like shot of compressed air. When I turn the A/C button off, idle comes back to normal and that psss sound is gone. I already changed compressors and that made no difference. Video below.....
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2005 gti 1.8t having really rough idle and misfires at idle fine while driving pulling codes:
P0300
P0301
P0302
P0304
Unplugged MAF and didn't make a difference...
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the last couple weeks the engine has been running poorly, rough idle .... and sputters until about 4k rpm with a noticeable loss in power. No clue what it is ... it seems to spring up after I got a coolant hose leak on top of the motor.
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