Golf/GTI VII :: Won't Hold Boost Through Gear Shift
Mar 24, 2015
yesterday got the car tuned. Stage 2 APR, it's a 1.8T 5 speed and I only have 2 real issues with the tune.
1. They forgot left foot braking(I think I can call APR to have this sorted)
2. When accelerating hard and shifting a gear, no matter how you try it will not hold boost through a gear changed. Turning off ASR improves this greatly but it still purges pressure and as a result the car falls flat on its face. Then it spoils up and same thing in the next gear. Trying to hold wide open throttle through a gear change does not work as I believe it feels like the pressure plate isn't able to engage fast enough. It is a full on loud pshhhh purge could a possibly higher PSI Diverter Valve fix this.
No other APR car I've driven does this (given they were MkV and MkVI). I'm not quite sure what is different with the motor unless the stock Diverter is strictly for economy and as soon as you don't need boost it purges? Not really sure
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My car is a 2001 Jetta 1.8t. the car is bone stock, I can not hold boost and it fluctuates all over the place. the dv sounded like a flutter until I bypassed the n249 now it sounds like a steady pssh. car still would only make 4lbs of boost and drop to 1-2lbs after 3500rpm. I pulled the line off the n75 to wastegate and did a pull. it boosted to 8lbs spiked to 15 and held 4lbs, if the tires spun it would spike to 12-15lbs and drop to 4 again. I replaced the n75 today and now will still spike high if I spin, with traction boosts about 8lbs which I believe is stock but then drops to 1-2 lbs then up to 4 down to 1-2 sometimes up to 6, it seems random. I also pinched off the dv to see if that was the problem but same thing.
I'm wondering how my car could lose boost with the wastegate actuator unhooked, I can not find a boost leak(not saying there isn't one, but haven't found one), the car holds more boost with the n75 unplugged and under acceleration, with n75 plugged in it seems like 3 surges per gear?
Car throws one code p1473 its an evap code.
The wastegate sounds like its closing when I pull the rod and let it go, lots of tension on it.
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2000 Celica GTS e shift will not hold gear it just shifts like its in drive....
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When I give my car some gas my boost gauge fluctuates a lot and doesn't hold, I have an OEM piston style dv revision d I believe, and I have a catch can and also a blow off valve, and I'm stage 2. I was thinking of getting an awe diverter valve?
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I picked up a 2004 GTI not long ago for pretty cheap because it had a few issues. I am working my way through them. However, having 3rd gear issue.
All other gears are perfectly fine but there is way less play in the shifter in the 3rd gear position and I have to hold the shifter in position until the clutch is engaged (pedal up) to avoid the gear grinding. Once the clutch is engaged it stays in 3rd gear fine. It doesn't matter if I am moving from 2nd to 3rd or 4th to 3rd. Same deal. I have aligned the shifter several times using to proper procedures with no effect.
It never grinds 3rd with the clutch disengaged (so the synchro is fine?) and it will bang shift no problem. Oh and the clutch is less than a year old. It was installed by a shop before I bought the car. It's not really a big deal, but I would like to fix it. If I have to swap the trans that's fine, but need to figure out if it is a trans or linkage issue first.
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So i was trying to adjust my freinds shift linkage on his o2j and i got a little ahead of myself and forgot to put the shift tower in the home position before making the adjustment. after i realized you can't shift into second ( either that or 2nd and 4th are extremely close together now and feel like the same gear ). I try to get it in home position even with the cables off ( did this for experimentation) and still wouldn't go into home position...meh. still have all the other gears including reverse .
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2003, Jetta 1.8t, 5 speed, 76,500 miles ... The other day I was driving and all of a sudden I had a hesitation in 3rd gear. I have relized since that this hesitation occurs in 3rd 4th and 5th gear, but not 1st or 2nd. I am going to change the spark plugs tomorrow in hope to fix this problem. The hesitation occurs whenever you get into the gas and begin to accelerate(typically around 3000RPM and up). There are no dash lights on at all and the cars is running fine besides the hesitation.
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I just noticed yesterday when the turbo starts to spool up I'm hearing a whining sound as it hits boost. It happens in every gear and under all load conditions, from when I'm cursing around to WOT. I've had Stage 3 installed for a little over 20,000 miles now and this is the first issue I've had. It still pulls just as hard and I'm not throwing any codes, but it is a weird sound I've never heard before.
It also doesn't matter if the car is hot or cold, the sound is still there. I'm not blowing any kind of smoke or burning any oil. What can cause something like that?
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Recently purchased a brand new 2013 R. With ZERO mods on it and 5,000 miles, I flashed the car to UM Stage 1. Immediately after flash I get a noise that sounds like a metal clattering in first and second gear from about 2K to full boost. Happens most audibly when the car is cold but is subtly ever present when heated up.
When the noise occurs I feel as if I'm getting half boost or a very inconsistent boost curve. The boost then kicks in after the 3,500k(ish) threshold. On rare occasions, the car will warm up and run exactly as I would expect it too. 1st, 2nd, 3rd all boost very evenly and strong from 0k and beyond with no noise and the car is amazing to drive.
To try and diagnose the issue, I flashed it back to stock and the noise disappears though I can still feel it not boosting consistently. I took it to the dealer (stock) and they said the didn't notice or couldn't hear anything which was what I expected. I'm guessing it is something the with wastegate but I don't know enough to say with any confidence.
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Background facts:
Tranny swapped from my 4 speed auto to a 1.8t o2j 5spd
13lb. Light flywheel
Powerflex dogbone mounts
Peloquin LSD
The problem: Very hard to get a smooth shift from gear to gear. Trust me, I know how to drive, but I can always feel the car shifting into a different gear if you know what I'm saying. On my friend's bone stock Jetta, I just let the clutch out without gas in between shifts and you don't feel a thing.
On my car, you feel EVERYTHING. People have told me the light flywheel will make the ride more uncomfortable in many ways, especially since the RPMs drop much quicker in between shifts than stock.
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So my MK7 GTI is my first manual car...And I am having trouble doing slow speed maneuver most of the time...
I often found myself in a situation where the speed and the rpm of the car is too low for 2nd gear, and when I try to shift to first, it would't let me, unless I almost come to a complete stop....
I tried to press the clutch all the way in, then rev up the rpm, then release the clutch, but it doesn't work much, the car still jerks...
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So, in the last month or so I have been having trouble getting the car to go into second gear when mashing the go pedal. I have to try several times and seems to be that the car has to unload and then it will shift.
I am using the DG shifter and have been for 30k+ miles and I have the red HPA dogbone insert. The shift has not been a problem up until the last month or two.
Is it time for motor mounts?
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When I shift from first to second gear, especially when the car is still cold, I get a vibration(?) feeling through the shifter. I'm not shifting hard but not slow either. It's definitely not a grind but it only happens when shifting from first to second.
FYI- The car has ~550 miles on it.
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I just finished the DG install yesterday. I am having a real problem with the first gear: it is really hard to shift into it (I mean hard!) - and several times I went into 3rd believing it was in 1st, while driving. I know that the DG is notchy and a little stiffer (which I like) but this does not feel right. I have to really push hard (moving slightly toward reverse) to shift into 1st. My wife would never be able to find it or shift into it (not that I let her drive my R that much...).
Note that all the other gears (2,3,4,5,6 and reverse) shift beautifully without any effort with that nice click. But not 1st.
What is it? Adjustment? I did it twice. I made sure that both cables were "all the way in" before tightening the first two bolts (and I made sure that the cables were not moving - a common problem with this install) with the engine lock on and pin in.
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2003 jetta gls 1.8t 5spd - gts stage 1 tune(gonzo stage 2)
tt 2-1/2" downpipe with high flow cat
turbo smart splitter valve(set to divert only)
turbo inlet pipe
homemade intake with k&n filter
stock n75 valve (f)
So in first through 3rd gear my car gets 20psi of boost then at 3,500 ish rpm smoothly starts to lower down to 15psi. but in forth and 5th gear the boost drops faster, enough so the diverter valve actually opens. then the boost will bounce up and down, around 15psi. the car still accelerates but with obvious power loss.
Is my diverter valve not "firm" enough? it is adjustable, so I've tightened it as much as it can. it doesn't seem to change anything. it came with spring spacers to make it tighter, but I haven't tried that yet.
Is it something with the tune? not enough fuel, need bigger injectors? The problem is only at about 100mph, so its not a big deal. I would like to get it straightened out if possible.
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2011 TDi 6 Speed (Sportwagon) with problems shifting into 2nd? Mine is currently in the shop under investigation for a balky shift when cold. The tech says it's not right, but then they find another vehicle in inventory with the same issue...currently waiting on a VW engineer.
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So after my 500 mile break in I decide to see what my new set up is made of. Had the kinetics stage 3 and the south bend stage 3 clutch installed. Did my first launch...everything went great. Got just a little bit of spin and the car took off like a scud missile. Right as Im going to shift into second my Rpms go down fast. No weird noises no metallic sounds nothing. No fluid under the car. Only a slight clutch smell nothing crazy. Car wouldn't go into gear. Shut the car off and it goes into gear.
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when i shift from 1st gear to 2nd gear, above 2500 rpms i get a really bad grinding, i am just under 50,000 miles so it is going to the dealership to get fix. It also kicks me out of second gear some time.
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Sometimes when I shift from first to second and second to third I hear a clanking noise coming from under the car. It happens when I move the stick and clutch pedal is fully depressed. Doesn't happen all the time and doesn't happen in gears 4-6. Something I should be worried about? Car is stock and has about 1k miles. It's been doing this since I bought it.
Also get a deeper boom noise coming from back sometimes when depressing clutch petal when under boost. Think this is normal tho? My BMW used to do the same thing.
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I just bought a 2012 R last friday. 14k on the odometer.
Car is perfect, cept when i shift into 6th its really grabby with a grind. does it every time.
should I take the car in to have it checked out, is this normal?
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Started noticing an issue with my trans awhile ago, the other day it stopped shifting out of first when cold. It's a 1.8T auto 5 speed tiptronic, it's the Jatco 09A. I know the shifting problem is the solenoids and it doesn't look that hard to swap them out. The trans shop said it looks like there is slippage on gears 2-4 and the fluid is toast. Looking at replacing or rebuilding, shop said 4-5 grand, how easy would it be to swap in a used trans? And what kind of issues would I be looking at?
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