My 1.8T jerks really bad going into boost and I have no power then it tries to boost and wont. It goes into what feels like limp mode and then no power acceleration is slow. Scanned it and got map over boost or high boost ...
Here are my mods:
APR stage
2 Cai
3' test pipe to 2.5' magna flow
R8 coils
Forge 008 running yellow spring
Eurojet smic
My car is not boosting. I had two codes p0238 and p0106...
View 9 RepliesWhen I drive the car makes noise just started. What I would like to know does the mk4 12v vr6. I have a differential and when i press the gas or release the gas the car jerks.....
View 2 Repliesso whenever i AM DRIVING AND i go to hit the brakes the car mostly under the hood in the engine jerks abit then smooths into stopping
99 Jetta GLS 2.0
Whenever I brake hard the steering wheel jerks to the right and the car follows. And it'll stay to the right until I got about third gear or if I shake the wheel back and forth. Not sure what it is. What could cause this? 01 jetta wolfsburg.....
View 8 RepliesI am at a complete loss as to what could be wrong with my 2002 VW Gold Cabrio GLX automatic transmission. In the last month the car has been to 3 different mechanics & none of them could solve this problem. The basic scenario: The car starts up fine. The engine will run & everything works fine (AC, radio lights etc).
If I put the car in Drive or reverse...it will idle & move. However, the moment I touch the gas pedal, whether in reverse or Drive, the car jerks & dies. If I put it in park & try to start it up again, the engine will turn over & the car will start, but the moment I touch that gas pedal again, same thing, jerks & dies.
Things that have been replaced so far: ignition coil, fuel pump, the catalytic converter has been removed. spark plugs replaced. Now they are saying that the problem is electrical & are working with the fuzes & wires. The car ran fine for 3+ years & I've had no problem with it.
Yesterday the mechanic called me & said the car was ready for pick-up. I go over there, pay him, I reverse out of the driveway & the minute I press the gas, it jerks & dies. Is this problem really electrical? Or is this third mechanic also grasping at straws?
It is difficult to explain (and google) but my 1.4 16V Golf 4 does this sometimes: while driving at a steady speed car jerks for a moment and revs drop quite much, a moment later it is fine. It feels like I had stepped on the brakes, but when I actually try that the revs won't drop as much. Like my engine seizes up for a fraction of a second but there is no noise. It has done that actually for 3 years, but it was really rare, about twice a year, but now I have had those jerks three days in a row.
View 3 Replies VWVortex, so I've had some issues with my MK4 recently (go figure). It started with steering wheel getting intermittent and random jerks to the right after driving for about 20 minutes on the highway at any speed any gear but only at around 1/6 throttle. I needed to do front end maintenance anyway, so I replaced both complete LCA's with ECS Tuning's ply ones, went stage 2 BFI engine mounts, stage 2 BFI dogbone mount, both ball joints, both tie rods ends, both axles, and an alignment.
Now I'm getting a shimmy in the steering wheel starting at ~80mph. I know my wheels are slightly bent and are being replaced in the summer when the weather is warmer, but it wasn't doing this same shimmy prior to all this. Just the jerking. Could it be they messed up on the alignment? Its really getting on my nerves considering I've dumped a lot of money trying to fix this problem just to have something else pop up.
I have a 2001 vr6 Jetta automatic transmission. When I shift my car from park into to reverse or drive the whole car jerks as if it's banging into gears. But while driving it drives normal. When I stop and accelerate I feel the same jerking you would say.
View 5 RepliesI have had my car a whopping 3 weeks and I noticed a weird click. Was driving my car today between two concrete walls with the windows down, and accelerated in 3rd into a little bit of boost and noticed a click-click-click rapidly as I accelerated. As I let off the gas, it slowed down and stopped. The car is stock, and it doesn't sound like any type of spooling from the turbo itself.
Only happens under acceleration past 2.6K (What feels like boost - No Gauge yet)
I made a horrible decision after my Ranger got totaled and bought a 94 Jetta... When I first got it, the car had trouble starting in the rain but eventually she would fire up. If I drove it immediately away after finally starting, it would jerk really bad when I gave it gas while shifting, until 4th gear. Once she ran for a bit it would smooth out. Nowadays if it rains the car won't start at all, just keeps turning over and I have to wait for a nice dry sunny day then it starts right up.
My mechanic worked on it recently and replaced a sensor in the distributor and the crank shaft sensor, because they showed up on the diagnostic as bad. Once his work was complete, he said he sprayed the engine with water and it started. So that was a week ago and it's raining and it won't start, the engine just turns over so it's not a starter issue. The car only has 143,000 but I am gonna get rid of it this fall but I just wanna know what this wet weather problem is.
Ok so last summer i put way too much oil into my engine, i ate some oil out the tail pipe and blew smoke if i went into boost. sucks right? yea.. well after that fiasco i was having worse problems with the turbo so i rebuilt it and found out my wategate didn't work.
Now my turbo is fully rebuilt. just had an oil change, and checked for any and all vacuum leaks. fixed the oil leaks. Everything is in working condition . so i went out and got a stage 1+ tune from unironic. i had stage one but had some upgrades and was looking to get the computer seeing everything right with the +side of the tune.
Problem is that I am still only boosting to maybe 15 lbs. sometimes 10. what the problem might be?
I have the problem of over boosting and hitting limp mode. now does that mean i adjusted the actuator wrong when putting it back on? if so how do i adjust it properly. or is there something else i can do to make the car come out of limp mode? also since it is boosting past a certain psi should i put a mbc on it and adjust it down?
View 1 RepliesI have no check engine light on my 20th. it spikes at 20psi and holds at 15 16 ish.. What's the little whistle when I boost over 12..??? It sometimes goes into limp mode but turning it on and off fixes that..
View 6 RepliesSo, the R is my first stick car and I've only been driving stick for 5-6 months now. I know that smoothness comes with time. I feel pretty comfortable with my skills overall (still have some issue with hill starts and smooth starts in general). Wen I don't know what I'm doing wrong when it comes to upshifting from 1st to 2nd. All other shifts are smooth.
When I try to shift normally, the car jerks. So, I tried releasing the clutch slower, this gets rid of the jerk but it bogs the engine. I've tried various things like getting back on the gas a little sooner, or pausing/slowing down the clutch release through the engagement point but I just can't seem to figure out what works and what doesn't. Is this just an issue of a larger gear ratio gap, rev hang, or what?
I did some Autocross today and it was fun as always, but my launches had some serious issues. I seem to bog down no matter what RPM I launch at. I did not go particularly high, but I launched from 3500 to 4500. When drag racing, I was launching around 5000. I did not think that was correct for launching for autocross, but who knows. I know that the video is not that great, but the boging is very noticeable as the car jerks up and down. It just loses momentum and RPMs drop. BTW, I have a VF Stg II, stock clutch and ESP was off. Even with the issues, my best time was near the top. [URL].................
View 21 RepliesYesterday I jump on the freeway, shift to 5th and the whole car jerks. Happened again later that night. After that I was more focused when shifting to 5th and it hasn't done it since. Could it be this B&M short shifter that the last owner installed? I also noticed since day one that when the car is cold it doesn't like going into first sometimes, meaning I can't throw it all the way to the left and then up to get to first. It's more like a little to the left and then up but when the car is warmed up I can throw it all the way to the left.
View 3 RepliesI've got a 2005 Jetta GLI (mk4) and i noticed that my car will try and boost at times when its not supposed to. i noticed it happens most when i initially start up my car and i start driving when its not fully heated up (i always warm it up for at least 5 mins no matter what the weather is like)
View 7 RepliesCar is stock and I seem to be getting a lot of jerking when I am on and off of the throttle peddle. It feels like a combination of sloppy motor mounts and a throttle response issue. What may be causing this? I am willing to bet that the motor mounts are partly to blame but it seems that there is more going on here.
View 24 RepliesMy 2012 f250 is been acting weird, usually the truck is boosting while on gear when I'm at a stop (around 0.40) I think that's normal on a 6.7 because it's always done it, but since yesterday I noticed it sounds different and it's not on boost anymore it just vacuums while on gear at a stop (around -0.25) I'm thinking it's the wastegate solenoid but I'm not 100% sure, and the truck doesn't boost as fast as before but it drives fine and I'm actually getting better gas mileage since it doesn't boost as before, what it could be? It's tuned and deleted....
View 7 RepliesI have an '04 6.0 and it doesn something strange. When for example I am going up a decent grade hill and passing, if I have to let off the throttle and then re apply, the turbo won't build boost, it sits at a couple pounds for a few seconds. Then after a few seconds it will build boost quickly again and work generally as normal. If it doesn't respond and I really need to get it to build boost NOW, if I push the accelerator to the floor, the delay shortens and it will often kick down a gear and then build boost. So if I gently accelerate, very slow to recover, if I hammer it, much quicker but regardless, when it's happening it's almost always the same situation, fully warmed up truck, warm/cold/freezing day and it happens when I back off and re apply. Thinking maybe a worn unison ring but not sure..
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