Golf/GTI VI :: 2003 1.8t Pre-Detonation When Boost Over 9 Psi
Sep 26, 2010
I have a 2003 jetta 1.8 turbo with a APR chip boosting 21 psi. I have had no problems for the first 5 years or so, but then recently within the last year it started predetonating when I boost over 9 psi, I've tried replacing the injectors, upping the fuel pressure, using 93 octane fuel, (which I always had used anyways) replacing the oxygen sensor and other things to no avail. Also there are no codes regarding this issue stored in the computer.
I highly doubt there is any issues with carbon buildup in the pistons.
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I live in Scotland so have a right hand drive 2003 MKIV R32. I got a VF stage 1 kit fitted last year and now I want to fit a boost gauge. I've bought a NewSouth indigo 0-30 psi gauge and a column pod.
What I need to know is where to take the feed from, where is the best place to fit the vacuum tube to get the best readings? any photos would be good.
I plan on fitting it this weekend along with my oil pressure gauge.
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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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My wife's 05RX has just turned 74k miles on it and recently I've noticed the motor has detonation at light throttle. If I press a little harder on the gas it goes away. Ive tried getting gas from different stations with no change. The car isn't running rough or missing and there aren't any fault codes.
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Bought a 2013, had been in a flood, couldn't see any sign anywhere of water level or damage, had 12,400 miles and noticed engine ping/detonation when engine lugs, have changed to mid grade and that works but every time I go back to 87 octane it starts back up.....also, I have noticed a bog down of the engine when I just barely give it any gas and if I keep the accelerator in that exact same spot, it eventually jumps into like a surge...
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Posting this on behalf a friend. He has a '97 Ranger 2.3, 5 speed, 2WD, no A/C or power steering. No trouble codes.
The Problems:
It has an erratic random misfire at idle. Just runs very rough at idle. The misfiring goes away once the engine speed is up.
It has absolutely no power while driving, it's foot the floor all the time. On a straight piece of road it will top out at around 65-70 MPH. Above ~2700 RPM or so and it will start getting severe detonation, by 4000 it's really bad.
Along with the no power issue, it also does not like to rev. 4300-4500 RPM is about the end of the world for this thing, and it really does not want to spin any faster in any gear. It just stops pulling.
What we've done and checked: Complete tune up, 8 new spark plugs, 8 new wires, new fuel filter and cleaned the MAF. Fuel pressure seemed a couple PSI low, so the regulator was changed out as well. No change in operation.
We have access to a scan tool with live data, so I checked some things out:
The O2 sensor reports a rich condition while wide open throughout the entire RPM range, so it's not a fuel delivery problem.
Fuel trims are normal, +/- 5-7% or so.
Calculated load was at 100%, pretty much from idle to 4500 RPM while wide open. This is very odd, as it usually takes a very high-strung N/A engine to hit 100% load at any RPM, let alone the entire RPM range.
Other things we've done:
We checked the reported ignition timing advance on the scan tool to the actual timing with a timing light, and it matched up perfectly, so no issues there.
However, I noticed that the timing light was flashing erratically at idle, and behaved slightly differently when clipped to the rear coil pack vs the front. Once the revs were up, the timing light flashed in a consistent manner.
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I have a 2003 volkswagen passat, front wheel drive with a 1.8t. I was told that I could get more boost out of my turbo without having to do any major modifications. Is it possible or not. Because as it stands right now I am completely lost when it comes to this.
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So pre waterfest my car was accelerating as expected. It'll pull fine until about 3250-3500rpm then it'll get a little kick until about 6k. Now, I can feel the boost at around 3500rpm but it's very mild. It only holds boost until around 4500rpm.
I don't have a boost gauge installed but I have an app that will connect to a Bluetooth OBD dongle I have. I've used it in the past and it tells me how much boost I'm making. It shows that I am peaking around 24-27 lbs of boost. But it just drops shortly after without me letting off the throttle at all.
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Whenever I try to brake boost my GTI the throttle seems to cut out. is this some kind of safety feature where brakes will dominate throttle when both are depressed?
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So popped my plastic shroud off to change my oil and thought it was strange the the hose for the boost gauge was really oily. Is it normal?
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car is losing boost as soon as it goes above the 3500 range.
it will reach peak boost at WOT but begin to tamper off as it goes higher in the range and will reach as low as 5lbs towards 5-6k
i have an apr stage 2+ tune and my peak boost is usually 17-19 lbs.
check all hoses and everything checks out fine.
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I'm having a strange issue with my R. My idle seems to get bouncy/seek RPM after i boost and come to a stop. No codes present on VCDS
Mods are Unitronic stage 1+, VWR intake and R8 ignition coils
~54K miles and pulls hard.
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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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I have been looking around for some boost information. I have come across a few threads that have boost graphs, but the images are no longer available. I have tried to get a hold of some of the posters, but no luck.
I only recently hooked up a boost gauge and have been monitoring my boost more. I had a slight feeling before I hooked it up that I was losing a little boost at higher rpms. Between 4500-5000 my boost drops from 18 to 15 and then from 5000-6000 it drops to about 10. I know it's sometimes normal for boost to drop at top end, but I'm not quite certain it's supposed to be that much.
I installed the Spulen Boost Pipe Kit hoping it may make some type of difference, but it's the same. What it might be? I have checked all my pipes as best as possible, but couldn't find anything.
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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 am in a small jam. The knobs on my westgate fell off and i have no boost at all. I need to adjust it back to a standard pressure .
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I have a 2012 R with 85,000 miles, APR chip running 93 octane with a HPFP and VWR cold air intake. I was driving my car today (slow driving on highest) and all of a sudden I felt no turbo boost, and heard a weird sound whenever I hit the gas. Car moved but would not get above 3500 rpms and couldn't really get past 60 mph. Again, absolutely no boost (I have a boost gauge as well to verify).
About to drop off the car at a shop but had a couple questions:
1. If the turbo is blown, can I still drive the car to the shop (not too far) without damaging the engine itself?
2. if the turbos needs to be replaced, what are my options besides getting the stock turbo replaced, without getting some crazy setup? This is my daily driver and I don't want to spend money beyond what I need to get it fixed, but it there is a stronger more reliable turbo for about the same as a OEM, I would want to consider... Also price for OEM replacement??
3. Without the mechanic looking at it, I'm just assuming it's the turbo but what else could be the issue? All the lines looks intact and intake is fitted correctly. I did have issues with my cam follower getting damaged at 45,000 miles (there was a hole in it) and I have been replacing it every 20,000 miles since. Didn't have any issues for 40,000 additional miles, but could damage to that cause turbo failure?
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So I installed a new f23 turbo about a month ago now. Doug over at frankenturbo has been working with me to tune my car, but we have figured there is a possible boost leak. I've checked all my hoses and can not find any bad connections. My current setup is a forge twintercooler, cts intake, and a ecs boost gauge. I've been over everything 3 times now and can not see where anything could be leaking. I can tell you when in low rpm's the power and boost is very weak. Doug suggested to turn the wastegate up and we did. Still no result for the low rpm to build boost. I'm at a loss.
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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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