Golf IV / Jetta IV :: 2001 / 1.8t - When Accelerate Boost Won't Go Past Zero And Stutters
Mar 20, 2014
Okay I have a 2001 Vw Jetta 1.8t Wolfsberg.
I have done a few mods:
- Oil catch can
- Boost gauge
- New turbo (5000 miles old)
- Brake booster mod
- PCV system fixed and some hose deletes (that make the intake manifold have one line off of it rather than two)
- Timing belt/ pulleys
- Accessory belt / pulley
- A few other things but nothing to cause this
The car will do this randomly. And I mean once every two weeks of that. I will go to accelerate and the boost gauge says the "boost" is at zero and no matter how much I give it gas, it won't go past zero and stutters. But it stops almost as fast as it starts. I don't get it...
My catch can has 3/4" line to about 1/2" or so, that meets the oil catch can. (Ebay with the blue hose.) I have new plugs, all new (dealership recommended) lubes, all kinds of new small odds and ends. But it's never done this before. (3rd time now in a month..)
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my car into VAG COM and since then it hasn't boosted past 4 lbs. it has Revo stg 2, K04, aftermarket side mount, full exhaust and a couple other bolt ons. Before the car was spiking at around 23/24 lbs. after pressure testing the system I found that the turbo inlet pipe was lose, so I tightened it. Still no change. I tried holding the battery terminals together for 10 minutes to reset the ecu and I also tried clearing the codes through a handheld code reader. No codes even come up anyways for this. The car is a 1.8T.
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The car is an 02 gti. I am having problems at full boost(17 psi) where the car starts to stutter, backfire, and eventually drops to 5 psi. Throttle up to 15 psi is always smooth and there is no hesitation or misfires. It's chipped but I am unaware of which software as it was already on the car when purchased.
What I've done:
Checked for any leaks - none
Cleaned maf
Replaced plugs(0.028) and coils which was needed anyways
Coil harnesses look good
Fuel filter changed
I've read about the n75 but I am not experiencing any surge issues that many have described. I do believe the car is running a little rich because I can smell some fumes but it is very light. Car fires up just fine and idles smoothly.
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I have a stage 2 2002 GTI with 135k & I'm having an issue once in a while where if I go WOT the car will only boost up to about 5 (around there, don't remember) psi but if I let go and accelerate again, it'll boost normally again.
No lights or CEL comes on when it happens though. I tried searching for any info but not sure what direction to look at. I have a stock K03S, Forge DV, 3" Turboback, Short Ram Intake, FMIC. Bad N75 or DV?
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I have a 2001 1.8t. Was stock except for exhaust and Cai. This weekend I installed a Audi K04 turbo, Audi exhaust manifold, 3" down pipe to 3" exhaust, 3" maf, front mount intercooler, 3 bar fuel pressure regulator, high pressure fuel pump, 386cc injectors, r8 coil packs, ngk plugs. The car start but sounds like it's going to turn off and can't get it out of first gear. As soon as I put some gas it seems like it chokes and can't go past 10 MPh. I don't have it chipped could that be the reason or should I look at something else that could be causing the problem. I'm wanting to go Unitronic stage 2+ but don't wanna do that and still have the same problem.
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The wife's Jetta wagon has been giving us some issue. It is a 2001 2.0 AZG engine auto trans wagon. 195,000 highway miles and well serviced and taken care of.
Here is the symptom : Engine will NOT rev over 3200. It will hit 3200 and stop dead. This is the case either in gear and driving or just sitting in Neutral. The engine seems to take a bit longer to start but does every time. The car seems to run great other then the 3200 rpm ceiling.
Wife has been driving it around like this for a while and I have let the codes accumulate. Here is the codes it gave me.
16727-cam position sensor- I just replaced the CPS with no improvement, issue is still there and code still pops up. I was told this code comes on when the car does not fire on the first rotation anyhow so it could be something else.
16804-cat o2 bank 1
16990-ICM issue
Cleared the codes and restarted the car. 16727 comes on immediately but other codes take a while to come on again.
I am leaning towards maybe an electrical issue? Bad ground, alternator output or something. Any tips on places of ground, connectors etc to clean and check? Also one or two guys keep mentioning coolant temp sensor and crank position sensor...but wouldn't those toss a code too?
I also pondered a plugged cat but I dunno, have had that before and you can usually tell right away...the car runs great until it hits 3200 and it is like a governor kicks in and she stops dead at 3200.
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I made an earlier thread about minor low speed crash and airbag deployment that has sense been fixed.
The engine 2.0 (AZG) will rev to 3000 (3200 sometimes) RPM and stop. This is only if you give it about 20% / 25% throttle. If you give it full throttle it spits and sputters. When I had the airbags installed. The codes were read it and also came up for cam sensor and o2 changed that and now the codes are gone. No CEL and it is exact same issues still. I can't tell if ECU is doing it but it feels like it's not getting enough gas or air since full pedal makes it stall.
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Ever since I got my car about 5/6 months ago I noticed it's not getting full boost. when I first got it the stock boost was getting about 5-7 I don't know if that's normal I've read they normally get more. eventually I got my car tuned and it's supposed to peak at 22 psi but it only got to about 13-14 psi. slowly it's been getting worse and my car is getting 2 psi. I've had lots of people tell me it's a vacuum leak. also the bov makes a flutter noise if that has anything to do with it. my intake doesn't make a sucking in noise like most do. The car has been randomly backfiring usually between gears. I just ordered a turbo inlet pipe a breather hose kit and a boost hose kit.
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I replaced the coilpack from the dealer last Summer. It got better as it wouldn't even start for a while after it finished raining. However it has still been finicky even after replacing it. Which brings me to the realization that water runs down the fender panel and ends up on the ground cable located under and to the right of the battery. Am I correct that this would cause the same symptom as a bad coil pack? It seems simple...move the cable right? However should water be doing that? Cause this little sucker is not stopping anything. Just need validation I guess...get new hood insert?
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My vw jetta 2.0 mk4 runs perfectly fine till i hit 70mph then it just bounces slightly between 70-75mph and stays there. Everything else on the dash seems to work fine. my rpm is working fine, odometer is working fine, it's just the speedometer that gets stuck once i go past 70mph. I can tell that i'm going faster than 70mph yet it wouldn't go past 70-75.
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99, 1.8T, 215K:: Drove 10 minutes fine, turned off, turned back on, stumbling to get an idle...stays steady at 900RPM (normal enough), but engine shutters, hard to accelerate (slow pickup), a bit louder... (limp-home mode)
I am thinking Air mass meter based off of old SAAB Turbo experience, and am going to get it plugged in to check codes.
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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 a 1998 Subaru Legacy Outback (automatic) that has 176,779miles on it. I live in San Francisco and only drive the car occasionally every 2-3 weekends out of the city. Recently within the past month I have noticed that after turning on my car and once it is in drive for the first 10-15 minutes it has a hard time getting past 20 mph. When I put the foot on the accelerator to go past 20mph the rpm goes way up to 4, 5 or 6. Once it gets past this then car is smooth and I have no problems. This problem seems to go away within 10-15 minutes of driving or if I turn my car off and then on again it seems to go away. I called my mechanic and they said it could be that the transmission fluid is low. I checked the level and it is perfectly normal.
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1994 E350 Club Wagon 351w, E4OD Transmission. New MLPS, New VSS, New TPS, New Fluid, New Filter, 5 year old Torque Converter.
The Transmission dribbled a little bit from the front pump seal a couple weeks ago, I checked the level, it was a bit low. Topped it off with Lucas, the dribble stopped. I drove it successfully for another week. I took it on a 10 mile trip, and 5 miles in, it started slipping above, 35mph, I let off the accelerator, and the transmission "Caught up" and I drove 35mph the rest of the trip. I let it sit over night.
The next morning it acted as if nothing were wrong. I drove it some more, and the same thing happened. I parked it, and revved the engine up a bit, and it tried to MOVE in park, I put it in neutral and revved the engine, and it lurched as if it were still in 1rst gear.
This time I let it sit for 24 hours, and after work I successfully put 20 miles on it without missing a beat. It was shifting right, good solid connection between the gas pedal and the road, and I thought the problem was fixed, as the temperature the day before was -20, and it warmed up outside to 30 degrees above.
I parked it for a couple hours and went to go do the errands, and it wouldn't make it above 15mph. It even struggled to do that much. I put it in reverse, and it held great, no slipping at all.
Let it sit until the next morning, and it was better. I pulled the Codes, and it gives me a 63(7) TOT High, and a 62(9) Torque Converter Clutch. It may or may not be relative, but Cruise hasn't worked in about 6 months either. What am I missing here? What could possibly causing this trouble? Fluid is up and new.
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I have a 1992 ford mustang 4 cylinder,its messed up bad.my car is shaking bad all the time and will not go faster than 40mph.what is wrong??
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So my 2001 1.8t Golf is having some issues holding boost. I have a Gonzo stage 2 tune, CTS FMIC, Forge 008 Diverter, Silicone inlet and MagnaFlow Exhaust. I've also done the whole Evap, SAI delete and installed a catch can.
Starting in 2nd or 3rd at WOT the car spikes up to 18psi and then progressively loses boost throughout the rev range. Close to redline the boost drops to 5 psi or so. It seems to be dependent on the revs. In fifth gear the car holds 18 psi much longer as the revs don't increase as fast.
There are no CELs. I've done multiple leak tests starting at the air box and plugging the pcv/catch can system as well as at the compressor side of the turbo. None of the tests revealed a leak anywhere in the intake system. However, when I stuck my ear very close to the valve cover I could hear what sounded like a very small air leak coming from inside the valve cover. I took a look at the wastegate actuator and it seemed fine, no play in the rod, no loose bolts and to move it just requires enough force to compress the spring and it returned to its original position.
My thoughts are that it could be a fueling issue or turbo in the process of dying maybe.
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Just noticed today that I have a slight drop in boost. Normal boost is 1.5 bar but today it is running slightly lower boost and does not have the same pull through all the gears.
2001 mk4 1.9 tdi golf
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I just recently notice a whistling noise when I hit boost. I'm not sure but it sounds like it is coming from my gauge. I'm not losing boost pressure. I do have a glow shift gauge. The most recent install was the TIP which I clamped on to the turbo but I'm wondering if it isn't on tight enough.
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I was riding along today everything running fine then I came to a stop sign and when I pulled off my car wouldn't run 10 psi of boost it was only running 5 psi so I when to a buddys checked everything over and all my piping looked fine so I went up the road and everything was fine so when I started going home it did the same thing pulled of shut the car off pulled off and it was fine again.
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I think my stock DV is going bad, my car makes a weird noise under boost?
1. Only happens when first starting the car after it has been sitting for an hour or a few. (not overnight)
2. Does NOT happen when first start in morning.
3. Goes away after like 5 minutes every time and the normal WHIIISHH sound comes back like it should when I step on the gas.
4. It does not make the sound at idle.
This recording I made was of my car being revved up after it sat for one hour.
[URL] ...
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My car is a 2005 1.8T Passat; About two weeks after replacing a burnt spark plug coil the vehicle started displaying EPC and a caution sign embedded in a circled arrow, whenever this happens i discover the vehicle does not accelerate past 80 mph even when the throttle pedal is pressed to the extreme; I replaced the engine speed sensor all to no avail, a used throttle body also behaved same way, what is responsible for this and how to rectify the problem?
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